PERFORMANCE EVALUATION OF STBC CODES WITH CHANNEL ESTIMATION BY OPTIMIZED PILOT BITS

Wireless communication has made a tremendous impact on the lifestyle of a human being. It is very difficult to survive without wire less in some form or other. Multi input multi output (MIMO) system plays a vital rol e in 4G wireless systems to provide advanced data rate. In this paper, we propo se channel estimation at receiver with the help of pilot bits, which are known to rec eiver in advance and the impact of change in pilot bits on BER, which is reduced so mu ch if we increase pilot bits. The performance evaluations are validated through computer simulations using MATLAB in terms of BER. Simulation results show that the B ER performance of the change in pilot bits clearly outperforms the conventional fix ed pilot bits method.

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