Title :
Blind joint detection of cochannel CPFSK signals over Rayleigh flat-fading channels with a diversity antenna array
Author :
Wang, Jing ; Cavers, James K.
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada
Abstract :
We describe a new method for blind joint detection of cochannel continuous-phase FSK signals over Rayleigh fading channels. By approximating the time variation (TV) of the temporally over-sampled channel as piecewise linear over appropriately selected detector windows, and by exploiting the finite alphabet property (FA) of the signals, the block-based blind joint detection of cochannel CPFSK (BJDFSK) algorithm estimates all cochannel signals and channels simultaneously. We study signal detectability and show that with a diversity antenna array of arbitrary number of elements, signals can be detected to within an equivalence set. Moreover, an efficient Viterbi-based implementation is presented, and its performance is demonstrated through simulation
Keywords :
Rayleigh channels; Viterbi detection; antenna arrays; cellular radio; continuous phase modulation; diversity reception; frequency shift keying; piecewise linear techniques; signal sampling; time-varying channels; BJDFSK algorithm; GSM; Rayleigh flat-fading channels; Viterbi detection; block-based blind joint detection; cellular capacity; channel estimation; cochannel CPFSK; cochannel CPFSK signals; cochannel signals; continuous-phase FSK signals; detector windows; diversity antenna array; equivalence set; finite alphabet property; performance; piecewise linear approximation; simulation; temporally over-sampled channel; time variation approximation; time-varying fading; Antenna arrays; Detectors; Fading; Frequency shift keying; GSM; Piecewise linear approximation; Piecewise linear techniques; Signal detection; TV; Telephony;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851441