Multiple Symbol Differential Detection with Majority Decision Method for DQPSK in LOS Channel

作者：Ishikawa Hiroyasu^*; Shinonaga Hideyuki

来源：IEICE - Transactions on Communications, 2013, E96B(1): 384-388.

DOI：10.1587/transcom.E96.B.384

• multiple symbol differential detection
• majority decision method
• frequency offset compensation technique

This letter proposes a multiple symbol differential detection (MSDD) with majority decision method for differentially coded quadrature phase-shift keying (DQPSK) in Rician fading channels. The proposed method shows better BER performance than the conventional MSDD. Simulation results show that the proposed MSDD with a majority decision method improves the system%26apos;s BER performance for DQPSK signals under the AWGN channel and it approaches asymptotically the theoretical BER performance of coherent detection. Furthermore, the proposed method shows better BER performance under the Rician fading channel with large frequency offsets especially for the range of C/M %26gt; 12 dB in comparison with the conventional MSDD.

• 出版日期2013-1