Title :
Performance of DS-CDMA system with M-ary orthogonal modulation and successive interference cancellation
Author :
Xue, Guoqiang ; Gunawan, Erry ; Dubey, V.K. ; Soh, C.B.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
The performance of a DS-CDMA system with M-ary orthogonal modulation is investigated; through computer experiments and mathematical analysis we find the variance of multiple access interference (MAI) in synchronous AWGN channels should be twice as much as adopted in previous references. The system performance of successive interference cancellation in multipath Rayleigh fading channels is also investigated by means of simulation. Our results show that successive interference cancellation is a simple yet effective way to mitigate MAI when the user density is low
Keywords :
Gaussian channels; Rayleigh channels; code division multiple access; fading; interference suppression; multipath channels; quadrature phase shift keying; radiofrequency interference; spread spectrum communication; synchronisation; DS-CDMA system; M-ary orthogonal modulation; MAI; low user density; multipath Rayleigh fading channels; multiple access interference; performance; successive interference cancellation; synchronous AWGN channels; AWGN channels; Computational modeling; Decorrelation; Detectors; Interference cancellation; Mathematical analysis; Mathematical model; Multiaccess communication; Performance analysis; Rayleigh channels;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652097
