DocumentCode :
414860
Title :
Performance analysis of bandlimited DS-CDMA systems in Nakagami fading
Author :
Sivanesan, K. ; Beaulieu, N.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Volume :
1
fYear :
2004
fDate :
20-24 June 2004
Firstpage :
400
Abstract :
Accurate performance analysis of asynchronous bandlimited binary DS-CDMA systems in Nakagami-m fading is considered. The fading is assumed to be flat and slow. The spectrum raised-cosine and Beaulieu-Tan-Damen pulse shapes are employed. A new accurate approximation for computing the bit error rate of bandlimited DS-CDMA systems employing random spreading sequences is proposed. A substantial computational complexity reduction is achieved. The well-known standard Gaussian approximation, Holtzman´s simplified improved Gaussian approximation, and the improved Holtzman´s Gaussian approximation are also considered. The accuracies of the approximations are assessed using Monte-Carlo simulation. For a system employing a deterministic sequence for the desired user and random sequences for the active interfering users, a characteristic function method is employed to derive exact BER results. The new Beaulieu-Tan-Damen pulse outperforms the spectrum raised-cosine pulse in all situations examined.
Keywords :
AWGN channels; Monte Carlo methods; code division multiple access; error statistics; fading channels; pulse shaping; spread spectrum communication; BER; Beaulieu-Tan-Damen pulse shape; Holtzman Gaussian approximation; Monte-Carlo simulation; Nakagami-m fading; asynchronous bandlimited binary DS-CDMA system; bit error rate; direct sequence code division multiple access; random spreading sequence; spectrum raised-cosine pulse; AWGN; Bit error rate; Fading; Gaussian approximation; Multiaccess communication; Multiple access interference; Optical signal processing; Performance analysis; Pulse shaping methods; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
Type :
conf
DOI :
10.1109/ICC.2004.1312519
Filename :
1312519
Link To Document :
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