a) Research and select a current trend in the area of telecommunications. Then, prepare a 10-15 page paper in Microsoft Word in APA format. At a minimum include the following:
i. Detailed description of the area researched
ii. Technology involved in the area
iii. Future trends in the area
iv. Example companies involved in the area
v. Regulatory issues surrounding the area
vi. Global implications for the area
Ever since the inception of the telephone by Alexander Graham Bell in the late nineteenth century, there has been a remarkable increase in the number of telephone subscribers. This has led to new developments in the telephone industry, particularly in the cellular sector. As the number of subscribers increases, so does their expectation of good Quality of Service. One of the essential functions for wireless communication systems is multiple access for a large number of users to share a resource.
There are three main multiple access techniques namely Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA). FDMA divides a frequency band into many frequency channels after which it assigns each user his own channel (Korowajczuk, 2004).
It is an almost obsolete technology however, since it was used mainly for analog technology. TDMA was introduced with the onset of digital technology. It divides the frequency band into time slots. Once a user exhausts his allocated time slot, the communication channel is ‘yanked’ from him and given to the next user (Vijay, 1999). This process goes on unstill the first user is connected again and the cycle continues. In CDMA, unlike the previous two, all users use the band at the same time. This achieved by assigning a specific code, called a pseudo-random code, to each communication channel. Thus, only users using the same channel can communicate to each other, without much interference from other users using the same band (Korowajczuk, 2004)…..
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