INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) SPARSE CHANNEL ESTIMATION BY PILOT ALLOCATION IN MIMO-OFDM SYSTEMS

Puneetha, S Akhila
unpublished
The channel estimation problem in multi-input-multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems is due to multipath delay spread and high sampling rate is investigated from the compressed sensing (CS) theory. In CS theory two algorithms are proposed such as SP and CoSaMP. These two algorithms are greedy algorithms and minimize the mutual coherence of the measurement matrix. Simulation results show that estimated channel patterns designed by CS theory algorithms gives
more » ... ch better performance than using normal channel estimation technique patterns in term of mean square error and bit error rate of the systems.
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