论文信息 - 1 and 2 stage decision feedback coherent detectors for DQPSK in fading channels

1 and 2 stage decision feedback coherent detectors for DQPSK in fading channels

Novel coherent detectors for DQPSK and /spl pi//4-DQPSK on fading channels are presented. The phase reference for the decision device is derived by mean square error estimation of the fading process. A finite impulse response filter is used for this purpose. The decision device is a traditional coherent detector. Both 1 and 2 stage detectors are considered. The proposed detectors show significantly better performance in fast fading compared to a differential detector. The detector may be used with FDMA, TDMA, CDMA and OFDM systems.

Arne Svensson | A. Svensson

[1] F. Adachi. Postdetection optimal diversity combiner for DPSK differential detection , 1993 .

[2] J. Cavers. An analysis of pilot symbol assisted modulation for Rayleigh fading channels (mobile radio) , 1991 .

[3] Arne Svensson,et al. Coherent detector based on linear prediction and decision feedback for DQPSK , 1994 .

[5] John G. Proakis,et al. Digital Communications , 1983 .

[6] D. M. Balston,et al. Cellular Radio Systems , 1993 .

[7] Desmond P. Taylor,et al. An adaptive maximum likelihood receiver for correlated Rayleigh-fading channels , 1994, IEEE Trans. Commun..

[8] J.E. Mazo,et al. Digital communications , 1985, Proceedings of the IEEE.

[9] F. Adachi,et al. BER performance of QDPSK with postdetection diversity reception in mobile radio channels , 1991 .