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Performance of Pilot-Symbol-Aided 16 QAM with N-branch Postdetection Diversity Reception over Multipath Fading Channels

The paper studies the bit-error-rate (BER) performance of a pilot-symbol-aided (PSA) 16QAM system with an N-branch postdetection selection combining diversity reception over multipath fading channels. Both pilot symbols and data symbols are used to compensate for the fading distortion. Computer simulation results have shown that the use of diversity reception can significantly improve the BER performance of the PSA-16QAM system. The improvement is more significant at high signal-to-noise ratio (SNR) and at high signal-to-interference ratio (SIR).