A few years ago, the GPRS services seemed like the future, but it is now perceived as slow, expensive and is too much of a hassle. That is why a new generation of mobile telephone communication system was developed, the 3G.
3G technology is short for third generation mobile telephone communication system technology. This technology promises better, faster and more efficient data transfer through cellular phones. It boasts 2Megabites per second data transfers which allow video calls, conferencing, mobile banking, map positioning services and internet access among others. With this transfer rate it is the task of the service providers to utilize it to the fullest by giving a variety of services for the subscribers. Along with the above mentioned, 3G capable cell phones will still have conventional voice and messaging services.
Just like any other product, there is also an institution that is responsible for standardizing 3G, and this is the International Telecommunication Union or ITU. The standards for 3G are specifically known as the IMT-2000. This stands for International Mobile Telecommunications system finalized in the year 2000.
According to the ITU, the key characteristics of IMT-2000 are flexibility, affordability, compatibility with existing systems and modular design. It is said to be flexible because it can accommodate five possible radio interfaces based on three different technologies which are FDMA, TDMA and CDMA. This avoids the problem of supporting a wide range of different interfaces and technologies. It is also agreed to make it more affordable so as to encourage the adoption by consumers and operators. The existence of the present technologies will also not cease because 3G is also compatible with these. And finally, the 3G system should be easily expandable in order to allow growth.
3G may have all the bells and whistles to brag about but it is, for a fact, a cellular telephone system, and all cellular telephone systems function the same way. The basic concept of two-way mobile telephone is quite simple; however, mobile telephone systems involve intricate and rather complex communications network (Tomasi, W.).
The cellular telephone system was born when researchers at the Bell Telephone Laboratories determined that by subdividing relatively large geographic market areas into smaller sections, called cells, the concept of frequency reuse could be employed to increase the