Mobile phone Essay

Korea then adopted 3G Networks soon after and the transition was made as early as 2004. 2. 5G (and level(p) 2. 75G) atomic number 18 technologies very much(prenominal) as i-mode info assists, camera phones, high-velocity circuit-switched data (HSCSD) and General face packet radio set service (GPRS) that provide some functionality domains bid 3G vanes, but without the full transition to 3G interlocking. They were built to introduce the possibilities of piano tuner lotion technology to the end buncosumers, and so increase demand for 3G services.When converting a GSM net income to a UMTS network, the source new technology is General Packet piano tuner Service (GPRS). It is the trigger to 3G services. The network connection is always on, so the ratifier is online all the sentence. From the operators point of view, it is important that GPRS investments ar re-used when divergence to UMTS. Also capitalizing on GPRS business experience is very important. From GPRS, oper ators could change the network directly to UMTS, or invest in an EDGE system. One reward of EDGE over UMTS is that it requires no new licenses.The frequencies argon also re-used and no new antennas atomic number 18 needed. Doing my interrogation I found that the Third extension of Wire slight networks are better than the second generation because of the speed and time it takes to download. Keywords TDMA- Time Division Multiple Access GSM Global body for brisk Communication GPRS General Packet Radio Service EDGE enhance Data GSM Enviroment CDMA Code Division Multiple Accsss Introduction In this research paper, I am trying to figure out the difference amongst the second generation and the tercet generation of mobile phones standards and technology.My objective is to comparing the second generation to the third generation and give some pros and con on the technologies. I want to prove that the third generation standards are far better than the second generation. Wireless c ommunication is the transfer of instruction over a distance without the use of electrical conductors or wires. The distances winding may be short (a few meters as in television remote control) or very long (thousands or even millions of kilometers for radio communications). When the context is clear the term is often simply shortened to receiving set.Wireless communications is mostly considered to be a branch of telecommunications. cellular phones use radio waves to enable the operator to make phone echos from many another(prenominal) locations world-wide. They can be used anywhere that there is a cellular telephone site to house the equipment that is required to transmit and receive the point out that is used to transfer both persona and data to and from these instruments. Second propagation 2G cellular telecoms networks were commercially launched on the GSM standard in Finland by Radiolinja in 1991.Three primary benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted, 2G systems were significantly more than efficient on the spectrum allowing for far greater mobile phone insight levels and 2G introduced data services for mobile, starting with SMS text messages. 3G first pre-commercial 3G network was launched by NTT DoCoMo in Germany branded FOMA, in may 2001 on a pre-release of W-CDMA-GA3Y technology. The first commercial launch of 3G was also by NTT DoCoMo in Japan on October 1, 2001.The second network to go commercially live was by SK telecommunication in South Korea on the CDMA2000 1xEV-DO technology in January 2002. By May 2002 the second South Korean 3G network was launched by KTF on EV-DO and then the Koreans were the first to see competition among 3G operators. Comparison of 2G and 3G 2G refers to second generation wireless telecommunication technology. While its predecessor, 1G, made use of analog radio signals, 2G uses digital radio signals. Based on what type of ninefoldxing (the process of combining multiple digital data streams into one signal) is employed, 2G technologies ay be categorized by whether they are based on time social class multiple access (TDMA) or code division multiple accesses (CDMA). TDMA-based 2G standards include the following Global constitution for Mobile communications (GSM), used worldwide Integrated digital intensify Network (IDEN), developed by Motorola and used in the United States and Canada temporary Standard 136 (IS-136) or Digital Advanced Mobile Phone System (D-AMPS), used in North and South America and Personal Digital Cellular (PDC), used in Japan. 2G makes use of a CODEC (compression-decompression algorithm) to compress and manifold digital vocalism data.Through this technology, a 2G network can pack more echos per amount of bandwidth as a 1G network. 2G cell phone units were for the most part smaller than 1G units, since they emitted less radio power. Another utility of 2G over 1G is that the barrage fire life of a 2G handset lasts longer, again due to the get down-powered radio signals. Since it hereditary data through digital signals, 2G also offered additional services such as SMS and e-mail. Its lower power emissions also made 2G handsets safer for consumers to use. Error checking, a feature allowed by digital voice encoding, improved speech sound part by reducing dynamic and lowering the noise floor.Digital voice encoding also made the hollo options less susceptible to unwanted eavesdropping from third parties, due to the use of radio scanners. 2G, however, does induce its disadvantages as well. In proportion to 1Gs analog signals, 2Gs digital signals are very dependent on location and proximity. If a 2G handset made a call far away from a cell tower, the digital signal may not be enough to reach it. While a call made from a 1G handset had generally poor quality than that of a 2G handset, it survived longer distances. This is due to the analog signal having a smooth curl up compared to the digital signal, which had a jagged, angular curve.As conditions worsen, the quality of a call made from a 1G handset would gradually worsen, but a call made from a 2G handset would fail completely. Some of the advantages of a 2G network are the lower powered radio signals require less stamp battery power, so phones last much longer between charges, and batteries can be smaller. The digital voice encoding allowed digital error checking which could increase sound quality by reducing dynamic and lowering the noise floor. The lower power emissions helped address health concerns. Enhanced privacy.A key digital advantage not often mentioned is that digital cellular calls are much harder to eavesdrop on by use of radio scanners. While the protection algorithms used have proved not to be as batten down as initially advertised, 2G phones are immensely more private than 1G phones, which have no protection against eavesdropping. Some of the disadvantage of the 2G network is in less populous areas, the weaker digital signal may not be suitable to reach a cell tower. This tends to be a particular task on 2G systems deployed on higher frequencies, but is mostly not a problem on 2G systems deployed on lower frequencies.National regulations differ greatly among countries which dictate where 2G can be deployed. Analog has a smooth descent curve, digital a jagged steppy one. This can be both an advantage and a disadvantage. infra good conditions, digital will sound better. Under slightly worse conditions, analog will experience static, while digital has occasional dropouts. As conditions worsen, though, digital will start to completely fail, by dropping calls or being unintelligible, while analog slowly gets worse, generally holding a call longer and allowing at least a few words to get through.While digital calls tend to be free of static and background noise, the lossy compression used by the codecs takes a toll the wander of sound that they convey is reduced. 3G wireless networks are capable of transferring data at speeds of up to 384Kbps. Average speeds for 3G networks will go astray between 64Kbps and 384Kbps, quite a jump when compared to common wireless data speeds in the United States that are often slower than a 14. 4Kb modem. 3G is considered high-speed or broadband mobile Internet access, and in the future 3G networks are expected to reach speeds of more than 2Mbps.The 3G technologies are turning phones and other devices into multimedia system players, making it possible to download music and video clips. The new service is called the freedom of mobile multimedia access (FOMA), and it uses wideband code division multiple access (W-CDMA) technology to transfer data over its networks. W-CDMA sends data in a digital format over a range of frequencies, which makes the data move faster, but also uses more bandwidth than digital voice services. W-CDMA is not the only 3G technology competing technologies include CDMA One, which diffe rs technically, but should provide like services.