Mobile phone free essay sample

Korea then adopted 3G Networks soon after and the transition was made as early as 2004. 2. 5G (and even 2. 75G) are technologies such as i-mode data services, camera phones, high-speed circuit-switched data (HSCSD) and General packet radio service (GPRS) that provide some functionality domains like 3G networks, but without the full transition to 3G network. They were built to introduce the possibilities of wireless application technology to the end consumers, and so increase demand for 3G services. When converting a GSM network to a UMTS network, the first new technology is General Packet Radio Service (GPRS). It is the trigger to 3G services. The network connection is always on, so the subscriber is online all the time. From the operators point of view, it is important that GPRS investments are re-used when going to UMTS. Also capitalizing on GPRS business experience is very important. From GPRS, operators could change the network directly to UMTS, or invest in an EDGE system. We will write a custom essay sample on Mobile phone or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page One advantage of EDGE over UMTS is that it requires no new licenses. The frequencies are also re-used and no new antennas are needed. Doing my research I found that the Third Generation of Wireless 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 System for Mobile Communication GPRS – General Packet Radio Service EDGE – Enhanced Data GSM Enviroment CDMA – Code Division Multiple Accsss Introduction In this research paper, I am trying to figure out the difference between the second generation and the third generation of mobile phones standards and technology. My objective is to compare 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 communication is the transfer of information over a distance without the use of electrical conductors or wires. The distances involved 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 wireless. Wireless communications is generally considered to be a branch of telecommunications. Cellular phones use radio waves to enable the operator to make phone calls from many 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 signal that is used to transfer both voice and data to and from these instruments. Second Generation 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 efficient on the spectrum allowing for far greater mobile phone penetration 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 Telecom 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 thus 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 multiplexing (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 division multiple access (TDMA) or code division multiple accesses (CDMA). TDMA-based 2G standards include the following: Global System for Mobile communications (GSM), used worldwide; Integrated Digital Enhanced Network (IDEN), developed by Motorola and used in the United States and Canada; Interim Standard 136 (IS-136) or Digital Advanced M obile 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 multiplex digital voice data. Through this technology, a 2G network can pack more calls per amount of bandwidth as a 1G network. 2G cell phone units were generally smaller than 1G units, since they emitted less radio power. Another advantage of 2G over 1G is that the battery life of a 2G handset lasts longer, again due to the lower-powered radio signals. Since it transmitted 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 sound quality by reducing dynamic and lowering the noise floor. Digital voice encoding also made the calls less susceptible to unwanted eavesdropping from third parties, due to the use of radio scanners. 2G, however, does have its disadvantages as well. In comparison to 1Gs analog signals, 2Gs digital signals are very reliant 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 curve 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 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 security algorithms used have proved not to be as secure 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 sufficient to reach a cell tower. This tends to be a particular problem 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 decay curve, digital a jagged steppy one. This can be both an advantage and a disadvantage. Under 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 range 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 range 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 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 differs technically, but should provide similar services. Mobile Phone free essay sample Advantages: * You can carry a mobile phone with you so you dont miss important calls * If you are lost, you can call for directions. * If you are in an accident, you can call the police or ambulance and if the phone has a camera, you can take pictures of the accident. * You can listen to music, text, play games when youre bored. * Most mobile phones have a calculator and a phone book. * You can use a mobile phone to call your customers or boss if you are running late to a meeting. * You can surf Internet amp; Connect with the whole world by Mobile. * You can chat amp; video conference. * Keep in touch with friends and family Good for emergencies * Employees can keep in touch at all times. * Customers can contact staff 24/7 * Phones have internet connection * More work available * They have cameras * You can check your emails * Can be used worldwide * It can fit in your pocket. We will write a custom essay sample on Mobile Phone or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page * you can connect even from other country to another by using roming serive Disadvantages: * Mobile phones can be expensive * They can damage your ear * Sometimes the reception is poor in some areas, limiting your connectivity (you cant talk underground or on planes). * People use the phone while they are driving, and this can cause problems. They can limit your face to face time with friends and family   * if stolen can be misused (pictures, mobile numbers) * Can be hard to find the right package * Can ruin the connection to the computer. * Staff can abuse their phones if they have internet connection * Can be hard for older people to use. * Because of their smaller size, they can be easy to lose. Until the 1800s people used letters for communication. But this way was very slow, and people couldn’t contact each other in emergency situations. There was also the possibility of letters being lost. But after the invention of the telephone in 1876 by Alexander Graham Bell, it became easier for people to communicate. Then in the 1970s, the cellular phone was invented. It brought many advantages into our lives. However, although cell phones brought many benefits into our lives, they also have disadvantages. The most important advantage of cell phones is that they can be used almost everywhere without cables or electricity. By using a mobile phone, you can communicate with anyone whenever you want and wherever you are. Besides this, if there is an emergency situation, mobile phones can be useful. Furthermore, you can get access to the Internet by using a cell phone. These days, the world’s most common means of communication is SMS. Cell phones include this system, so in this way you can communicate with someone more cheaply than by normal calling. In contrast, cell phones have some disadvantages. For example, cell phones spread electromagnetic waves. And these electromagnetic waves cause important health problems like cancer. Additionally, cell phones often affect the electronic systems used by equipment like cars, ABS (automatic brake system), and computers. This can cause big problems, such as accidents. To sum up, cell phones not only have advantages, but also they have disadvantages. Mobile phones make our lives easier. But at the same time, they cause some important problems in our health. Day by day mobile phones are becoming the essential part of our life. 1. Stay connected anytime and anywhere: The most basic benefit of a cell phone for which most of us use it is that we can stay connected with our loved ones in any part of the world and anytime. Gone are the days when we used to stand in queues to make an STD or ISD calls. You can talk to your loved ones staying even seven seas far with cell phones. . SMS: When initially SMS was invented, the makers were not actually sure whether it will work. I mean when people can straightaway make a call and talk, then why would anybody like to take the pain of typing a message! But to their surprise SMSs are today the most widely used service across the world. There are many situations in which a person can’t attend a call, so all y ou have to do is simply send an SMS and without talking your message is delivered. 3. Your way out in emergencies: Imagine you are stuck in a traffic jam, getting late for a meeting or your car has broken down in middle of nowhere. Cell phones are of great use in time of such emergencies. You can contact help with the use of cell phone easily. 4. Navigation in your hand: cell phones are constantly being upgraded with new technology and the recent phones are equipped with navigation and GPRS systems. You can never get lost if you have a cell phone with navigation system. Imagine, it gives you the details of every nook and corner of your destination. 5. Mini PC: cell phones are nowadays almost equivalent to mini computers. The latest ones are equipped with windows and internet facilities. So you don’t need to wait for the newspaper! You can simply access the internet on your cell phone and get to know about the latest news, your e-mails, movie shows and a lot more! 6. Enhance your business: cell phones are a great help even at your business. With cell phones, you can constantly stay in touch with your employees and get to know about crucial information of your business. 7. Help in legal matters: a lot of criminals are these days being held because of their cell phones! The police can track a criminal via tracking the place where his mobile phone is using GPS. Also checking a cell phone’s call records give vital information to the defense forces about the criminals. . Wholesome entertainment: with a cell phone in your hand, you don’t need a TV or PC to get entertained. It is all in your cell phone. You can play games, listen to music, and click pictures and even record videos in your cell phone. 9. Transfer of data: these days cell phones are equipped with infrared and bluetooth technologies which a llow you to transfer data like mails, pictures, music and even videos just in span of seconds. 10. Prestige and fashion statement: cell phones have become a matter of prestige and fashion statement, especially among the youth. If you have a latest handset then you can definitely impress others! Now a days, it is a common scene to see everybody keeps his /her ear attached to a cell phone. Often, they are doing it at the risk of an accident, loss of human relationship or studies. Intimate friendships of our parents’ younger days are now lost and it is now reduced to an SMS or mobile talk. Keeping addresses of our intimates is now lost. Writing letters is given up. Human relationship and mental concentration   are now replaced by electronic connections. It is a fact that having a mobile phone now a days is a sort of necessity and it is an inevitable truth that mobile industry is taking everyone’s mind by a storm. From the very basic thing of making a call, texting, and now Internet access for just a touch of your fingertips. Do you have one of these? I do have one of those too and I won’t deny the fact that I enjoy using them. So as one of the million subscribers of this technology I will share you some of the advantages and disadvantages I found, out of having a mobile phone ADVANTAGES It keeps us in constant contact with people you consider important It can help us seek help immediately during emergency cases Its a sense of being financially uplifted. Through mobile phones you can lessen your boredom,example listen to your favorite music and as well as watching movies through downloading. It can take photos Mobile phones also give us easier access on the internet. You can carry it anywhere It performs a lot of useful functions like calendar, making notes, alarm clock, timer and calculator. No doubt, our mobile phone makes our life more convenient, but as the saying goes every technology has its equal negative side and mobile phones are not so especial to be exempted. DISADVANTAGES Expensive. People spend less time bonding with their family and friends. People just contact through phone and become too lazy meeting outside Disturb us on our works and studies People spend lots and lots of money buying the latest model Affects our body because of radiation it produces Easily broken and gets spoilt on falling of water. mobile phone makes it easier to invade privacy In the end, I hope you can weigh the advantages and the disadvantages I have mentioned to help you use your mobile phone in a responsible manner. We humans created mobile phones and it is all up to our control..