Filter Banks for Next Generation Multicarrier Wireless Communications

The theoretical capacity limits in communications can be approached by multi-carrier techniques. With radio channels, multi-carrier techniques can be combined with multi-antenna transmitters and receivers to provide efficiency. Existing or planned transmission systems rely on the OFDM technique to reach these goals and a considerable amount of research has been devoted to these techniques during the last 20 years. However OFDM has a number of drawbacks, such as the use of the cyclic prefix to cope with the channel impulse response which results in a loss of capacity and the requirement of block processing to maintain orthogonality among all the sub-carriers.

Provided by: Hindawi Publishing Topic: Mobility Date Added: May 2010 Format: PDF

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