Communication industries have been encountering a lot of problems in their communication links some of such difficulties or problems are Interference, fading, overhanging, attenuation and congestion. Transmitted signals with different frequencies are affected in different ways in frequency domain. The fact is an advantage in frequency diversity technique. Multiple replicas of information signal are sent over several affected frequency band in this diversity. In a sufficient wide signal bandwidth, multipath components can resolve. This paper presents the technique that can enhance the channel capacity of a cellular mobile system. Error control coding and interleaving using frequency diversity was used to combat time selective or fast fading in communication link. In the result, it is possible to obtain different independently fading signal. The number of resolvable multipath equation is used to approximate the maximum achievable diversity order for multipath diversity.
Communication, Space Time Block Code, Space Time Trellis Code, channel capacity
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