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

Author

Svensson, Arne

Author_Institution

Dept. of Inf. Theor., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

2

fYear

1995

fDate

25-28 Jul 1995

Firstpage

644

Abstract

Novel coherent detectors for DQPSK and π/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

Keywords

FIR filters; cellular radio; decision theory; differential phase shift keying; fading; feedback; multi-access systems; quadrature phase shift keying; signal detection; time-varying channels; π/4-DQPSK; 1 stage decision feedback coherent detectors; 2 stage decision feedback coherent detectors; CDMA; DQPSK; FDMA; OFDM; TDMA; fading channels; finite impulse response filter; mean square error estimation; performance; Detectors; Estimation error; Fading; Feedback; Finite impulse response filter; Frequency division multiaccess; Mean square error methods; Multiaccess communication; Phase estimation; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1995 IEEE 45th

Conference_Location

Chicago, IL

ISSN

1090-3038

Print_ISBN

0-7803-2742-X

Type

conf

DOI

10.1109/VETEC.1995.504947

Filename

504947