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Example research essay topic: Circuit Switched Wireless Communications - 1,086 words

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A solution to that would be using the hands free or the voice speaker where the cellular phone will remain away from a persons head, therefore there will be no worries regarding safety. Therefore, a good solution to this problem would be to pull over and then receive your call where it will be much safer for you and others that are with you on the road. The usage of cellular phones causes cancer as scientists have proved it. It also distracts drivers away from the road therefore causing accidents and killing people. Cellular phones also develop bad phone manners where a person raises his voice once he starts using it and it becomes a habit later on. On the other hand, the necessity of using a Cellular phone can be very helpful as it can help a lost camper to find his way back by just allowing him to make a call and ask for directions.

Also, if certain areas of the city are considered to be dangerous, then using the payphone could be inconvenient and life threatening, therefore the cellular phone comes in hand and can help solve the problem. An example of this would be, my dad when he went on a business trip to Japan. As it is impossible to understand the language of a totally different culture and country, as it is also hard to get around. If it werent for the cellular phone, my dad would have had a very hard time to get around and to even get to work. At several incidents, he vividly remembers that even going for a walk could be puzzling, as everything around looks similar.

Another absolute necessity would be for businessmen to use their cellular phones in order to conduct and to run their businesses. It is an absolute hassle if they do not carry it with them because a lot of important numbers, addresses, client names, and messages may be stored on it that helps them get through everyday work. On the other side of the spectrum, it helps the businessmen's clients or visitors to have easy contact with him. An example of that would be my boss who I worked for during the summer as a secretary. He was supposed to meet with his client to discuss business over dinner. Up until the last hour just before the business dinner meeting, the client called in and apologized for not being able to make it as he had other more important issues to attend.

In this case, it was easy and accessible for the client to make such a call and reach my boss in time to tell him so. This helped save time for my boss who could have been waiting there for a long time. Wireless communications Wireless communications are becoming increasingly popular in todays fast paced world. Mobility, portability, and instant access (via the Internet) to unlimited information have become the mantra of businesses and individuals alike. The evolution of wireless communications has been incredibly quick and the future of this technology is unlimited. The impact of this technology on our lives will be tremendous and allow us to do things we never imagined.

What Is Wireless Communication? The two main wireless services in use today are cellular and private packet radio. The service that is chosen will depend on the application (s) that a company or individual wants to run. Cellular Cellular technology is commonplace in both the business and private sector.

There are two types of cellular technology: 1) circuit-switched cellular, and 2) Cellular Digital Packet Data (CDPD). One of circuit-switched cellular biggest advantages is its nationwide availability. Another advantage is the ability to send voice and data over the cellular phone network. Circuit-switched cellular is ideal if the application requires the exchange of long text messages, large files, or faxes because it typically charges by the minute of connect time, not by the number of bytes transferred. A practical application for this technology is the transfer of data from a laptop by means of a cellular modem and phone. The initial cost to outfit a laptop to connect to a cellular network is about $ 400.

A disadvantage of this type of service is the long set-up time each connection requires (about 30 seconds). Cellular Digital Packet Data is best suited for transaction processing and database queries. This service offers fast call setup (about 5 seconds), and is inexpensive for short messages, such as sending e-mail. The main disadvantages of CDPD are the expense of large file transfers, and the limited availability of the service (currently it is available in about 40 cities nationwide).

Private Packet Radio Private packet radio, though not as common as cellular, offers businesses widespread connectivity. The two major private packet radio providers in the U. S. are Audio and RAM Mobile Data. These services can be connected to from virtually anywhere in the country. Private packet radio offers quick call setup and is well suited to communications that generate short, bursty messages, such as e-mail, database queries and point of sale applications.

Since private package radio has been around for several years, there are many applications that use the network. Some of the commercial applications being used handle messaging, scheduling, electronic filing of expense reports, and even allow for insurance agents to process accident claim forms from a customers house or office (Salmon 96). The disadvantage with private packet radio, like CDPD, is that it is expensive for large file transfers. The fundamental problem that wireless communications faces is that none of the major wireless data services is ideal for all applications. The stumbling blocks to widespread adoption of data connections for laptops and personal digital assistants (PDAs) include the lack of compatibility between services, the cost of the services, and the size and price of wireless modems. History of Wireless Communications Radio telephones have been used for decades, but have not been widely available due to limited system capacity.

The breakthrough that addressed this capacity problem was the development of the cellular concept, which allows frequency reuse. Needless to say, the use of wireless communications has increased exponentially since that breakthrough. The evolution of wireless systems can be divided into several stages: 1) the prevailing stage, 2) the first generation analog system, 3) the second generation digital system, and 4) the third generation system (to be discussed later). The promised services, the required technologies, and the developmental timetable are summarized in Table 1 (see appendix A).

Prevailing Stage The prevailing...


Free research essays on topics related to: e mail, wireless communications, cellular phones, cellular, circuit switched

Research essay sample on Circuit Switched Wireless Communications

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