Human Resources Information Technology Systems Research Proposal

Human Resources Information Technology Systems - Research Proposal Example 221) "The key to the integrity and ease of maintenance of your decision support applications is to have a repository of high-quality, stable data. The data warehouse is an ideal foundation for building these data marts. The data warehouse contains the basic ingredients that ensure the success of your strategic analytical environment'" (Inmon, Imhoff & Sousa,2001, p.190) "The data mart is customized or summarized data that is derived from a data warehouse and tailored to support the specific analytical requirements of a given business unit of business function'" (p. 195) These three references summarize the purpose of a business information system architecture that can provide analytic resources for key business decision making while facilitating data input required for daily business operational functions such as payroll, benefits, etc. The following proposal will align the development of new Human Resources Information Technology Systems with goals of reduced manhours, smoother data input, and greater data accessibility and accuracy. Presently, low level data input is being accomplished by high level employees thus wasting the time of those personnel; i.e. simple data input that the employee him/herself could input on a real time basis is now being input from paper records by HR personnel. This generates repetitive, time wasting tasks and introduces more chances for data errors and escapes. There are also disparate databases which make data mining and analysis more inefficient than it should be. On a functional level, this system of disparate, non-centralized databases requires employees to access multiple sites to gain the information required for a single task such as processing a new employee. All of these factors create indirect, and often unrecognized, costs to the business. Objectives: 1. Establish a single HR data warehouse that extracts and normalizes data from multiple input sources to provide user defined reports that expedite data mining and analysis of data pertinent to the specific function of that user. Specific business unit and/or departmental data marts can also be created from this data warehouse. 2. Synergize this data warehouse with an integrated On Line Transaction Processing (OLTP) system so that data is retained for analysis by business administrators while supplying operational business functions such as payroll and benefits with the basic data required to perform those functions. 3. Format collected data in a way that can be used by other key collateral business functions such as benefits and Human Resources. 4. Provide a facility for employees to not only input their own data (ex. Time expense, changes in personal data, etc.), but also be able to retrieve and review their own data in real time on the organization's intranet. 5. Integrate and streamline HR requirements for recruitment by creating a central depository of applicant information including copies of their resumes. 6. "Mistake Proof" data entry by establishing input metadata that requires the employee to input correctly formatted data (i.e. numbers for number fields, text for text fields, etc.) and complete information (compulsory fields that will not allow saving the information until they are completed). 7. Establish a scalable system that can

E-Commerce Strategy Truly Scrumptious Assignment

E-Commerce Strategy Truly Scrumptious - Assignment Example Our company objective is to import a variety of traditional and non-traditional sweets, package them and distribute them to retailers across UK. While we have a good network of retailers who carry our goods, we have no way to reach directly to our consumers or to market directly to them. In this regard there is an opportunity for Truly Scrumptious for increased market penetration and to sell to individuals who would like to purchase our sweets at the whole sale prices or in greater quantity. While the costs in opening our own distribution outlet can run extremely high, including rental, shop interior and exterior, recruiting and training counter salespeople, a change in distribution routes and marketing - a much more efficient and technology enabled option is to invest in a company website. Objectives and design of Website: The main object of the website is to communicate with our consumers, to tell them about the quality and variety of our products and to persuade them to purchase t he sweets on at least a trial basis. Our long term plan will be to retain a loyal consumer base of individuals who become regular visitors to our website and purchase consistently. The e-commerce strategy will be a StoreFront model- providing all the traditional options of a physical store in a digital medium for the customer. The secondary objectives will be to provide a forum for customer feedback and product information for interested retailers who wish to start a business relationship with us. In order to fulfill these objectives the website will need to have certain features: 1. An attention grabbing, yet focused and uncluttered design 2. Product categories will be neatly laid out and easy to access 3. Pricing, ingredients and nutrition information will be available with each product description 4. The product description should be catchy and attractive 5. Shopping cart and online payment options, with easy save and change 6. Comments sections 7. Customer service communication options 8. Discounts, bundle pricing and other promotions 9. A separate page for interested vendors and retailers with contact and product information These features will be catered specifically towards a customer base of the middle and upper-middle class who are comfortable with online shopping and treat sweets like an indulgent pleasure. The whole website experience should be easy to navigate with eye catching visuals and elegant descriptions which will grab the reader’s attention and convenient use of shopping cart and payment options will allow impulse buying. The E-retailing atmosphere is steadily getting crowded. New merchants are appearing every day and through continuous reviewing of operations and strategy websites are competing for the top spots of the industry. For our website to break through clutter, attract traffic and increase sales we need to have a clear, focused objective from the start. Technical and Practical steps The website building will involve three m ain steps namely 1) Content and designing 2) Hosting the website (external storage, capacity and bandwidth etc) 3) Marketing and promotion. Afterwards our main priority will be maintenance, updating content and reviewing impact on sales. The actual sales, distribution and customer service will still be controlled by the respective departments with support from the IT department in integrating the physical aspects

Anti-immigration and anti-bilingual education Essay

Anti-immigration and anti-bilingual education - Essay Example From chapter 9, multicultural education refers to the philosophy and the way of looking at the world. This is not limited to the learners or students enrolled at a particular school. It also has a touch on everything like how students relate to teachers and how well and conducive is the environment for the students. However multicultural education doesn’t have a boundary like it can only happen in school since the community or society where the student resides is also considered as part of this philosophy in action. Considering that the product of a multicultural education is a multicultural person, he or she continues to be searching for knowledge and continues to use this process in order for him to participate in the country’s goal for progress. Multicultural education invites a student to not just to think for himself but also for the society where he is. This is the reason why educators, in order for them to help in this multicultural education must consider the im pact of their teachings, their decisions whether the decision is made cumulatively or individually. It should also be considered that with the multicultural education, one of the goals is the critical consciousness of the students which is the start of one’s good path as it leads him to a life with free decisions, meaning he doesn’t forever become a follower of the norms but a critic of it in order for change to occur not just for his own benefit but the benefit of the many. And since long-existing rules.... But with an additional rule of speaking in English because it is a directive only implies no just pressure for the student but also the school's failure and the government's misinterpretation of the real need of students. This also implies that the social structure has already embraced the idea of the "modern" age or the "future" as non-existent without the English language, the very obvious discrimination not just in education but in race as a whole. (2) What is multicultural education Why do we need multicultural education Answer: From chapter 9, multicultural education refers to the philosophy and the way of looking at the world. This is not limited to the learners or students enrolled at a particular school. It also has a touch on everything like how students relate to teachers and how well and conducive is the environment for the students. However multicultural education doesn't have a boundary like it can only happen in school since the community or society where the student resides is also considered as part of this philosophy in action. Considering that the product of a multicultural education is a multicultural person, he or she continues to be searching for knowledge and continues to use this process in order for him to participate in the country's goal for progress. Multicultural education invites a student to not just to think for himself but also for the society where he is. This is the reason why educators, in order for them to help in this multicultural education must consider the impact of their teachings, their decisions whether the decision is made cumulatively or individually. It should also be considered that with the multicultural education, one of the goals is the critical

Human Resources Information Technology Systems Research Proposal

Human Resources Information Technology Systems - Research Proposal Example 221) "The key to the integrity and ease of maintenance of your decision support applications is to have a repository of high-quality, stable data. The data warehouse is an ideal foundation for building these data marts. The data warehouse contains the basic ingredients that ensure the success of your strategic analytical environment'" (Inmon, Imhoff & Sousa,2001, p.190) "The data mart is customized or summarized data that is derived from a data warehouse and tailored to support the specific analytical requirements of a given business unit of business function'" (p. 195) These three references summarize the purpose of a business information system architecture that can provide analytic resources for key business decision making while facilitating data input required for daily business operational functions such as payroll, benefits, etc. The following proposal will align the development of new Human Resources Information Technology Systems with goals of reduced manhours, smoother data input, and greater data accessibility and accuracy. Presently, low level data input is being accomplished by high level employees thus wasting the time of those personnel; i.e. simple data input that the employee him/herself could input on a real time basis is now being input from paper records by HR personnel. This generates repetitive, time wasting tasks and introduces more chances for data errors and escapes. There are also disparate databases which make data mining and analysis more inefficient than it should be. On a functional level, this system of disparate, non-centralized databases requires employees to access multiple sites to gain the information required for a single task such as processing a new employee. All of these factors create indirect, and often unrecognized, costs to the business. Objectives: 1. Establish a single HR data warehouse that extracts and normalizes data from multiple input sources to provide user defined reports that expedite data mining and analysis of data pertinent to the specific function of that user. Specific business unit and/or departmental data marts can also be created from this data warehouse. 2. Synergize this data warehouse with an integrated On Line Transaction Processing (OLTP) system so that data is retained for analysis by business administrators while supplying operational business functions such as payroll and benefits with the basic data required to perform those functions. 3. Format collected data in a way that can be used by other key collateral business functions such as benefits and Human Resources. 4. Provide a facility for employees to not only input their own data (ex. Time expense, changes in personal data, etc.), but also be able to retrieve and review their own data in real time on the organization's intranet. 5. Integrate and streamline HR requirements for recruitment by creating a central depository of applicant information including copies of their resumes. 6. "Mistake Proof" data entry by establishing input metadata that requires the employee to input correctly formatted data (i.e. numbers for number fields, text for text fields, etc.) and complete information (compulsory fields that will not allow saving the information until they are completed). 7. Establish a scalable system that can

Anti-immigration and anti-bilingual education Essay

Anti-immigration and anti-bilingual education - Essay Example From chapter 9, multicultural education refers to the philosophy and the way of looking at the world. This is not limited to the learners or students enrolled at a particular school. It also has a touch on everything like how students relate to teachers and how well and conducive is the environment for the students. However multicultural education doesn’t have a boundary like it can only happen in school since the community or society where the student resides is also considered as part of this philosophy in action. Considering that the product of a multicultural education is a multicultural person, he or she continues to be searching for knowledge and continues to use this process in order for him to participate in the country’s goal for progress. Multicultural education invites a student to not just to think for himself but also for the society where he is. This is the reason why educators, in order for them to help in this multicultural education must consider the im pact of their teachings, their decisions whether the decision is made cumulatively or individually. It should also be considered that with the multicultural education, one of the goals is the critical consciousness of the students which is the start of one’s good path as it leads him to a life with free decisions, meaning he doesn’t forever become a follower of the norms but a critic of it in order for change to occur not just for his own benefit but the benefit of the many. And since long-existing rules.... But with an additional rule of speaking in English because it is a directive only implies no just pressure for the student but also the school's failure and the government's misinterpretation of the real need of students. This also implies that the social structure has already embraced the idea of the "modern" age or the "future" as non-existent without the English language, the very obvious discrimination not just in education but in race as a whole. (2) What is multicultural education Why do we need multicultural education Answer: From chapter 9, multicultural education refers to the philosophy and the way of looking at the world. This is not limited to the learners or students enrolled at a particular school. It also has a touch on everything like how students relate to teachers and how well and conducive is the environment for the students. However multicultural education doesn't have a boundary like it can only happen in school since the community or society where the student resides is also considered as part of this philosophy in action. Considering that the product of a multicultural education is a multicultural person, he or she continues to be searching for knowledge and continues to use this process in order for him to participate in the country's goal for progress. Multicultural education invites a student to not just to think for himself but also for the society where he is. This is the reason why educators, in order for them to help in this multicultural education must consider the impact of their teachings, their decisions whether the decision is made cumulatively or individually. It should also be considered that with the multicultural education, one of the goals is the critical

Newspaper Comparison Essay Example for Free

Newspaper Comparison Essay Both the newspapers have the headlines in large bold letters. The story is big news and as many people would be talking about it, they want to catch peoples attention so they will buy the newspaper. The Daily Star briefly explains the story NINE TOP SOCCER STARS IN GANG RAPE' which is quite specific information. I think they do this so when people look at the newspaper that is what they will read and therefore will want to know in more detail what happened, especially as it involves celebrities TOP SOCCER STARS. I think the words GANG RAPE are in inverted commas because this is what the footballers were accused of, maybe a quote of how somebody described the offences committed. However, the Daily Mail does not explain what the article will be about on the front page as the Daily Star does. It merely states SHAMING OF SOCCER I think this is so that peoples curiosity will be raised and they will want to know who shamed soccer, what happened etc. I think both of these headlines are quite effective and would make me want to but the newspaper and so learn more about the story. Both the front pages of the newspapers have sub-headings. The Daily Stars says, Leicester players held in Spanish roasting shame which is quite slangy and explains the article further although here are much more to be found out and will boost the interest of people who read the sub-headings. The Daily Mails sub-heading reads, Premiership stars held in custody over sex allegations. This is quite similar to the Daily Stars sub-heading as it briefly explains what the article is about. However, it is not as slangy as the Daily Stars. A difference between the front pages is that the Daily Mail has two pictures whereas the Daily Star has none. The two pictures are of arrested footballers and they are both looking towards the text in the centre, which invites people to read it. One mans head comes out of the picture frame, which gives the newspaper article a 3D realistic impression. Both the front pages have the beginning of the article and then the reader is referred to another page where it continues. Both the newspapers have by-lines but the Daily Stars is at the top of the beginning of the article and the Daily Mails is at the top of the second column. The two newspapers seem to have conflicting information. The Daily Mail tells us, Eight premiership stars held in custody. In contrast, the Daily Star says, Nine top soccer stars in Gang rape'. This is quite important information that they differ about. However, both the newspapers explain that one player; Steffen Freund was released on bail after being accused of failure to assist a victim. Again, the headlines are in large bold letters. They both include quotes. The Daily Mails headline reads, Players raped three tourists'. This is very short, simple and to the point. It encourages the readers to read about such a shocking story. The quote is probably from a policeman or a spokesperson. The Daily Stars headline is quite different. It includes alliteration GANG RAPE SOCCER STARS ARE MARCHED AWAY IN MANACLES The quote is what the gang was accused of and is the common term the public knows the scandal to be. In the Daily Mail, there is a strapline reading, Leicester City stars on training break in Spain were drinking heavily and brawling before alleged attacks on women in hotel room, say staff. This explains the story further and is quite dramatic, so will make the reader to read the article drinking heavily, brawling, and attacks on women. These terms add interest and shock the reader, especially as celebrities are involved and these people are supposed to set an example to their fans. However, in the article in the Daily Star, there is no strapline or sub-heading which gives me the impression that this newspaper is of a more simple style. The layouts of the newspapers strike me as being quite similar. They both take up a double page spread. On the left they both have the article as well a couple of pictures, though the Daily Mail has three pictures on the left page. Both the right pages are taken up with pictures as well as a section with a picture of each player and w description of what they are accused of. However, the Daily Mails is more detailed as it also has some history on each of the footballers. Also, the Daily Mail has a small article linking with the footballers article, with the headline reading, Young, overpaid and violently out of control. One difference is that the Daily Stars headline does not stretch across the double page, whereas the Daily Mails does. On the left page, the Daily Star has its text in the centre of the page, which makes it seem like the priority to the reader, but the Daily Mail has its text towards the left of the page, which makes it seem less important. The Daily Star has crossheads that break up the text, such as Warned and bruises. I think this is to make the text easier to read for the reader. However, the Daily Mail has no crossheads. The Daily Mail uses language that is simple and self-explanatory, such as, They were said to have forced their way into the womens room at the exclusive La Manga resort on the Costa Calida, where the team has been on a winter training break. There are hardly any long or hard words in the text. I think this is so anybody can read this newspaper whether they are well educated or not. The Daily Star uses quite strong language, as if wanting to dramatise the story as much as possible and hold the interest of the reader. For example, it uses: drunken night out, sex scandal, and smashed down , boisterous stars. This quite contemporary language and gives the impression that the Daily Star is aimed at a less sophisticated reader. The pictures in the newspapers are similar in some ways but not in others. Both the newspapers have the same picture of a German woman (who made the accusation) hiding from the camera under her jacket. This gives the impression that she is quite vulnerable and makes me feel sorry for her. I think the editors who chose this picture wanted o give that impression. The picture in the Daily Mail is, however much larger than in the Daily Star and is also a cut-out. This is quite a modern way of presenting a picture and gives it a 3D effect. Both the newspapers have a section with a photograph of each player, their name and what they are accused of. However, the pictures in the Daily Mail differ to those in the Daily Star. Those in the Daily Star show the players looking like thugs. They all have violent or grumpy expressions on their faces and from these pictures we can imagine them being able to rape the women. But, the picture in the Daily Mail shows the players with smiles on their face, looking into the camera as if to say they are in control. They do not look as thug-like as they did in the Daily Star. Both the newspapers have different picture of the hotel. I think the pictures in the newspapers are given different priorities. The two picture on the lift page of the Daily Star are small and on either side. However, the three pictures in the Daily Mail are very large and take up most of the page. The other picture in the Daily Mail is of the soccer players lawyer, showing her with a grave expression on her face, which gives us the impression that the footballers are in trouble and she is not finding it easy helping them. Other pictures in the Daily Star are of a worried looking boss with Steffen Freund and a large picture of Coyne, one of the accused players looking scared. Both the newspapers hold quotes. The Daily Star has quotes in the middle and towards the end of the article, as does the Daily Mail.

Wireless Communication Systems

Wireless Communication Systems Introduction Wireless communication is part of todays world and is greatly in demand as such resources are preferred in todays world and so the sales are increasing day by day with equipment which involves wireless communication. The G which means generation, in the technology today amongst phones covers the technology improvement in the last few decades. The first mobile phone technology started with 1G which involved analogue technology. In the early 1990s the next generation of communication developed named 2G which was in a digital technology which also had text messaging with the idea of SIM cards coming into practice. SIM is short for (Subscriber Identity Module). Other technologies that evolved were CDMA(Code Division Multiple Access) and GSM (Global System for Mobile Communication). The next generation which followed made the data carrying better, making it potential to carry information such as websites as how they were originally. In 3G technology the iPhone has become the latest. As of today the agreement of 4G technology has not yet been established. It has been planned to have fast transfer speeds and should have good security. Something else that the 4G technology should meet is that it should reduce blips in transfer of the device when moving between different networks. The 4G mobile network should also be able to use the networks like the ones on the internet with IP addresses. 4G mobile is not yet implemented as an approved set of standards, so its characteristics are at present simply goals rather than requirements. As well as considerably desired increasing data transfer speeds, 4G mobile as well as should use improved security measures, When a device moves one place to another place between this area covered by different network reduce the blips in transmission is the another goal .4G mobile networks should also use a network based on the IP address system used for the internet. Two major systems using 4G technologies are WiMax and Long Term Evolution. WiMax began testing its 4G technology in Baltimore in 2008. The opposite system LTE was expected to be ready to be tested in 2010 and is expected to be ready for use in 2013. All this information above is described in detail in this research. All the topics covered above are broadened below. 3G 3G technology comes with better features than previous mobile network technologies. It has transmission which is at high speed, better multimedia access as well as connection globally.3G used with mobile phones a connects the phone with the internet and other IP connections which allow voice as well as video calls to be accessed. Not only this but also helps to download and surf the internet. From lower mobile technologies, 3G technology has higher data speed, better audio and video access, video calling support, Web use at quicker speeds and TV through the Internet. In 3G networks the transfer speed is between 128 and 144 kbps for devices that are fast and 384 kbps for slower ones. Wireless fixed LANs have a sped beyond 2Mbps. W-CDMA,TD-SCDMA, WLAN and cellular radio, among others are some of the technologies that 3G includes.[1] WCDMA The third-generation Universal Mobile Telecommunications System (UMTS) will be able to deliver high data rates of up to 384 kb/s at widearea applications or even 2 Mb/s indoors . This is achieved by using wide-bandwidth signals with Code-Division for Multiple Access (W-CDMA). The user data are multiplied by a fast pseudorandom spreading sequence before phase modulating the radio-frequency (RF) carrier. The resulting signals which are then broadcast have a bandwidth of approximately 4.5 MHz. Parameter W-CDMA Uplink 1920-1980 MHz Downlink 2110-2170 MHz Access DS-CDMA Duplex procedure FDD Modulation QPSK Pulse shaping Root-raised cos, Chip rate ÃŽ ± = 0:22 User data rate 384 kb/s; 2 Mb/s Bandwidth/channel 5MHz Max. output power 21 dBm (Class IV) TD-SCDMA It was proposed by the China Wireless Telecommunication Standards group to the ITU in 1999.60MHz has been reserved for CDMA2000 and UMTS, but TD-SCDMA has reserved 155MHz.In common with UMTS-TDD,TD-SCDMA does not require separate uplink and downlink and offer speeds from as low as 1.2kbps up to 2 Mbps. Uplink and downlink traffic can be transferred in the same frame but in different time slots, and there can be up to 16 codes allocated per slot, more time slot can be devoted to downlink transfer than in the uplink. This allocation of time slots is dynamic and if a symmetric allocation is required, which is usually the case for a telephone call, then this will also be allocated the required resources. The minimum frequency band required for this system is 1.6 MHz and the chip rate is 1.28Mcps.it does not have soft handover mechanism but has a system similar to GSM where the mobile device are tightly synchronized to the network, and it is from here that the term ‘syschronous is d erived. it is designed to work with a GSM core network is similar way to WCDMA and can also use the UTRAN signalling stack when it is deployed as a complementary technology. The frame is 5 ms rather than 10ms in WCDMA and split into seven slot.[2]. 4G The future system technology of 4G should bring something that is very enchancing when compared to the previous technologies. 4G yet does not have a meaning as it has not yet been established. However the current targets for it are as follows: system interoperability:-flexible interoperability of the various kind of existing wireless network, such as satellite, cellular wireless, WLAN, PAN and system for wireless access to the fixed network. It ability to roam between multiple wireless and mobile standards. Due to the interoperability of different mobile and wireless network through the same terminal we can identify the three possible configuration. There are Multimode terminals:-this is obviously achieved by incorporating multiple interfaces to the terminal, one for the access methods of every different kind of wireless network. The ability to use many access methods will enable users to use a single device to access the 4G network irrespective of the particular access method used. Overlay network:- In this architecture user will access the 4G network through the Access Points of an overall network. The AP will perform protocol translation and Qos negotiation for the connections. Since APs can monitor the resource used by a user, this architecture supports single billing and subscription. Common access protocol:-this choice calls for use one or two standard access protocol by the wireless networks. A possible option is for the wireless networks to use either ATM cells with additional headers or WATM cells. Terminal bandwidth and battery life:- Future generation network will be covering a large range of banwidths from about a couple of kbps to about 100 Mbps or above. The battery life is expected to be about a week. This will happen with a reduction of the size of the battery. Packet-switched fixed network.:- This 4G technology will use wireless IP based fixed networks which will be able to connect the mobiles with the wireless networks effectively. Varying quality of bandwidth for wireless access:- Having a range of networks together will cause it to overlap with other networks. Due to where they are, the user will be abl to use different qualities of wireless by the change of bandwidth. Distribution layer: This layer of the network will be able to help with digital video as well as broadcasting and due to a good coverage will cover all areas. Cellular layer: This layer of the wireless network will give a load of capacity providing many users as well as provide good coverage in highly populated areas. It will allow data sizes of over 2 Mbps. The cell size will also be small compared to the distribution layer, and will support good mobility. Hot-spot layer: This layer will help with good service over a short distance. It will include WLAN systems like IEEE 802.11 and HIPERLAN. This layer will not provide great coverage in particular as it is a short distance however roaming should be available. Personal network layer: This layer will include wireless connection however in short ranges say through the use of Bluetooth. Mobility will be less but roaming should be available. Fixed layers: This layer uses an access system which is fixed. Advanced base stations: In the future for networks, the new smart antennas will make the capacity bigger as well as base stations having self-configuration not needing the need for employment. This would reduce costs. They will include a good range of terminals. High data rates: The 3G system will be changed using what it has already to form the new 4G generation. The 4G generation will offer higher speed than the 3G generation. The introduction of 4G needs specific targets which are named above. To get to these targets, 4G needs the basis on how to achieve this which is explained in detail below.[1]. How 4G works: In the networks which have the 4G wireless technology, each one will be given an IP address which will have a home IP address and an address which represents its real location. When the computer in the Internet wants to communicate with another device perhaps a mobile phone in the wireless network. The computer will be able to send packets to the IP address of the 4G technology getting to know the home address too. To the phones address, the directory will send the packet through a tunnel, or a mobile IP, whilst on the meantime the directory server would also let the computer know that the phones address is correct. After this the other packets can be sent. The use of4G-IP address (IPv6) is that it will be able to carry more info than in the past with the IP address (IPv4). In this IP address, software can use them to tell the differences between services and to communicate with network areas of different sorts. This could be with the computer and the phones network. An example includes Moreover which uses 4G technology not only has this transmission way but also uses OFDM, MC-CDMA, LAS-CDMA, UWB *7 and Network-LMDS.[4] Orthogonal Frequency Division Multiplexing abbreviated as OFDM, passes on figures on a great quantity through a radio wave. Changing the radio signal into many small signals then transferred at the same time through different frequencies to the receiver is the method in which this is carried out. OFDM is a digital technology through modulation which increase strength of these signal; this is good for high digital data transition. This is a great digital technology method in which through the process of modulation increases the strength of the signal and is good for a transition of high quality digital data.[2] In this time, users might have a good question about how theses waves targeted the correct destination. A OFDM makes the radio wave target the right place though a couple of devices which are wireless, which make a connection tunnel when they start communication. After connecting the target, the radio wave splits into smaller signals which have the correct direction towards the target. MS-CDMA stands for Multi-Carrier Code Division Multiple Access, which is actually OFDM with a CDMA overlay. The users are multiplexed with orthogonal codes to differentiate users in MS-CDMA and single-carrier CDMA systems. It allows flexible system design between cellular system and signal cell system. However, in MC-CDMA, each user can be allocated several codes, where the data is spread in time or frequency. LAS-CDMA the shortened form for Large Area Synchronized Code Division Multiple Access, is made through by LinkAir Communication which is basically wireless technology through the developed 4G technology. LAS-CDMA makes voice capacity better, with high speed and the latest original solution called Code-Division Duplex (CDD) which combines the LAS-CDMA technology with the greater data transmission type of Time-Division Duplex (TDD). This combination makes Code-Division Duplex to be very spectrally efficient as well as having high speed available today as a great system. LAS-CDMA is seen as being the great 4G technologys ‘World Cell. If two wireless devices for instance are a quite big distance apart then using this protocol which has IPv6 to create the connection. In the 4G world, UWB radio which solves the multi-path weakening matters through its clever use of electrical impulses which has all frequencies at one time. Due to its low-power condition though, this UWB cannot be used outside of being indoors or underground. UWB should be used however with OFDM which cal transfer digital data on a large scale. This is positive though as the UWB would be running insides equally as the OFDM runs outside which means that the signal can stay strong. UWB also needs to be used in small distances inside the buildings through 4G technology. The broadband technology which is wireless used to carry video, data Internet as well as voice in 25 GHz is the Network-LMDS Local Multipoint distribution system. This method makes sure all these things are carried together at once, and this can be the result in the fading issue locally. [4] Differences between 3G and 4G: The main factors in which 3G and 4G technologies vary is due to their services, their ways of transmission, access to the web, the rates of transfer, security as well as quality. 3G technology can only carry upto the speed of about and up to 2 Mbps however 4G technology can go much higher to a better speed. 4G technologies can provide global connection whereas for 3G markets it is difficult to roam globally. Technology which uses 4G can provide global roaming at a lower price. 3g is based on the notion through circuits and packets through things like WCDMA, CDMA and TD-SDMA. However 4G uses the use of packets. As mentioned above about the differentiation between the 3G and 4G, this has been broadened in the tab le below. Feature 3G wireless technology 4G Wireless technology Speed Up to 2Mbps Full-mobility: up to 100Mbps Low-mobility:up to 1Gbps Service 1. Difficult of global roaming 2. Expensive 3. good for voice transmission 1. roaming smoothly 2. inexpensive 3. good for any type of transmission Core Network 1. Wide-area concept 2. Circuit and packet switching 1. broadband IP-based 2. Entirely packet switching Technologies 1. WCDMA 2. CDMA 3. TD-SDMA All access convergence Main: 1. OFDM 2. MC-CDMA 3. LAS-CDMA 4. UWB 5. Network-LMPS Wimax Wimax which stands for Worldwide Interoperability for Microwave Access was made to give a ordinary structure for wireless connectivity in permanent, moveable, and mobile environments. WiMAX is a wireless technology intended to give high throughput over a distance. It gives the quick broadband of link. It also provides wireless access which reduces costs which involves the fibre and making buildings. It has a range that goes beyond WiFi. A WiMAX uses two hardware components — a WiMAX tower as well as WiMAX receiver. This tower covers a 30 mile radius. The tower joins to the Internet using a wide connection through a wireline, or it offers a wireless link to other WiMAX towers with Line Of Site (LOS for short) microwave links. The receiver could be anything. NLOS (non-line of sight in full) connections join devices to the tower using a frequency range of 2-11 GHz as low wavelength signals are strong. LOS connections however do not cover as large area but covers and area of 4-6 miles. QoS is the aspect in a technology to deliver high bandwidth services. Examples of such include VoIP and IP video services as well as other services as such. To provide such QoS service, the WiMax need to make sure they have a low latency.[4] WiMAX security is defined in the Privacy Sub-layer in the MAC Layer, as specified by WiMAX standards. Fixed WiMAX (802.16-2004) typically uses X.509 certificates for authentication and 56-bit Digital Encryption System (DES), while Mobile WiMAX (802.16e-2005) uses EAP for authentication and Advanced Encryption System (AES) for encryption. Both employ Privacy Key Management (PKM) for authentication between base station and subscriber station.[5][9]. LTE Long Term Evolution (LTE) is a 4G wireless broadband technology made by the Third Generation Partnership Project. LTE has many benefits for not only the consumer but also the workers too: Performance and capacity one request that the LTE is to provide downlink rates of a minimum of 100Mbit/s and needs the technology to allow for speeds that are over 200Mbit/s. Simplicity From below 5MHz up to 20MHz, LTE supports carrier bandwidths. LTE also supports both FDD (Frequency Division Duplex) and TDD (Time Division Duplex). Ten paired and four unpaired spectrum bands have so far been identified by 3GPP for LTE. it is easiest to deploy 10MHz or 20MHz carriers, and eventually deploy LTE in all bands. plug-and-play, self-configuration and self-optimization will simplify and reduce the cost of network roll-out and management. LTE will be deployed in parallel with simplified, IP-based core and transport networks that are easier to build, maintain and introduce services on. Wide range of terminals- LTE supports hand-over and roaming to existing mobile networks, all devices can have ubiquitous mobile broadband coverage from day one[6].[9] COMPARSION BETWEEN WIMAX AND LTE Aspect Wimax LTE Access technology Downlink(DL) Uplink(UL) OFDMA OFDMA OFDMA SC-FDMA Frequency band 2.3-2.4GHz,2.496-2.69GHz ~2GHz Bit-rate: DL UL 75Mbps(MIMO 2TX 2RX) 25Mbps 100Mbps(MIMO 2TX 2RX) 50Mbps Channnel bandwidth 5,8.75,10MHz 1.25-20MHz Cell radius 2-7km 5km Cell capacity 100-200 users >200 users in 5MHz >400 users for large BW Spectral efficiency 3.75[bits/sec/Hz] 5[bits/sec/hz] Mobility: Speed Handovers Up to 120km/h Optimized hard handovers supported Up to 250km/h Inter-cell soft handovers supported Legacy IEEE802.16a through 16d GSM/GPRS/EGPRS/UMTS/HSPA MIMO DL UL No. of code words 2Tx X 2Rx 1Tx X NRx(Collaborative SM) 1 2Tx X 2RX 2Tx X 2Rx 2 Standardization coverage IEEE 802.16e-2005 PHY and MAC CN standardization in Wimax RAN(PHY+MAC)+CN Roaming framework Wimax forum Auto through existing GSM/UMTS [7].Verizon has devoted to using Long Term Evolution starting by soon, ensuring to deliver ten times the data throughput of 3G technologies in the current time. Others, including NTT DoCoMo in Japan, France Telecom, Vodafone in the UK, ATT, and T-Mobile have said also they will use LTE rather than WiMAX. Meanwhile, Sprint, Clearwire, and Comcast in the U.S., UQ Communications in Japan, and Yota in Russia are all competitively using 4G networks suitable for mobile networks using todays edition of WiMAX, 802.16e (2 to 10 Mbps), in inner-city markets where they will without doubt compete with 3G (and later, LTE) sources. The WiMAX Forum declares that 504 operators in 145 countries have organized WiMAX, but many use older 802.16d technology that however cannot provide mobile services, and many are small operators in developing countries or pastoral areas.[8] Conclusion:- In every generation, when there is a default, the next following generation gets rid of this and a new idea or notion is found as a result. However at some points this may be difficult to happen due to several reasons. The world is looking forward for the most intellectual technology that would bond the full earth. New ideas are being introduced by researchers throughout the world, but new ideas introduce new challenges. There are several issues yet to be solved like integrating the mobile world to the IP based core network, resourceful billing system, and smooth hand off mechanisms. Reference: Future mobile networks 3G and beyond Edited by Alan Clapton published by : the Institution of Electrical Engineers, London, United kingdom Convergence Technologies for 3G Networks IP,UMTS,EGPRS and ATM Jeffrey banister, Paul Mather and Sebastian Coope at Orbitage Consultants. http://docs.google.com/viewer?a=vq=cache:suYVNKca06YJ:www.habits.in/hab_files_007_822/files/3G%2520TO%25204G%25205G.pdf+limitations+of+4Ghl=engl=ukpid=blsrcid=ADGEESgduPdmeqSL9dwRiGnFJ0JOIktrJxjYXI8_5x7PWdeg7eQwcmvkJGDQE-N6lFOL62qsTZW4So4iJ9oIZIeb3tSr6X8xD35e3gjxiI_g6tL4XcJMY3MYFWZyjtnclDWgFCAA8S6Rsig=AHIEtbSPBQflncP4szu1MI5tLZL4tX8Y9g Wimax taking wireless to the max Deepak Pareek published in 2006 by Auerbach publications http://4g-wirelessevolution.tmcnet.com/topics/4g-wirelessevolution/articles/what-is-wimax.htm 15/03/2010 19.00 http://4g-wirelessevolution.tmcnet.com/topics/4g-wirelessevolution/articles/lte-ericsson.htm 15/03/2010 20.00 http://www.comsysmobile.com/pdf/LTEvsWiMax.pdf 15/03/2010 19.00 http://www.wi-fiplanet.com/news/article.php/3845111 15/03/2010 19.00 http://www.cs.york.ac.uk/rts/docs/CODES-EMSOFT-CASES-2006/codes/p266.pdf 15/03/2010