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4G History
Code Division Multiple Access uses the spread spectrum method, the way it works means its highly encrypted, so its no surprise it was developed and used by the military. Unlike FDMA, CDMA allows the user to sit on all of the available frequencies at the same time, and hop between then. Each call is identified by its unique code, hence the term Code Division. CDMA is very bandwidth efficient. It also allows for soft hand off, meaning it can communicate with more than one base station at any one time, very handy isn’t it? No wonder it was chosen for 3G.Onto 4G...
4G will provide unconceivable amounts of bandwidth to the palm of a user. Matching current Local Area Network speeds, 4G networks will provide 100MBps on the move. This is enough for studio quality video, multi channel surround sound and much more. 4G will be based on OFDM – the next generation in access technologies (read the technical section for more info on OFDM),
4G will change the way we work, live and play. Cheap end user costs, fast, always on, reliable connectivity, where ever you are, what ever your doing. Some people view 3G as a stop gap until the real 4G network arrives, something which is due around 2010, and will impact every one, every where.