Title :
Multiple-symbol detection for orthogonal modulation in CDMA system
Author :
Bin Li ; Tong, Wen ; Ho, Paul
Author_Institution :
Catena Networks, Kanata, Ont., Canada
fDate :
1/1/2001 12:00:00 AM
Abstract :
We investigate in this paper the performance of orthogonal modulations with noncoherent multiple-symbol detection (MSD). It is shown that for uncoded systems, the asymptotic error performance of the MSD is almost as good as that of the ideal coherent detector. The application of MSD to the CDMA IS-95 reverse link, which represents a coded system, is also considered. The simulation results show that the MSD receiver is about 0.5 dB better than the conventional symbol-by-symbol detector in both the additive white Gaussian noise and Rayleigh fading channels. Finally, reduced-complexity MSD receivers with little performance degradation are also presented in this paper
Keywords :
AWGN channels; Rayleigh channels; code division multiple access; land mobile radio; modulation coding; radio receivers; CDMA system; IS-95 reverse link; MSD receiver; Rayleigh fading channel; additive white Gaussian noise channel; asymptotic error performance; coded system; noncoherent multiple-symbol detection; orthogonal modulation; performance; reduced-complexity MSD receivers; uncoded systems; AWGN; Additive white noise; Degradation; Delta modulation; Detectors; Error correction; Fading; Multiaccess communication; Phase detection; Samarium;
Journal_Title :
Vehicular Technology, IEEE Transactions on
