Title :
A simplified aperiodic cross-correlation model for direct-sequence spread-spectrum multiple-access communication systems
Author :
Chan, Chi-Kin ; Lam, Wong-Hing
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
The discrete probability density function (pdf) of the average aperiodic cross-correlation function (ACF) is modeled by a triangular function to simplify the evaluation of the bit-error-rate (BER) performance. Both the pdf of ACF for a random binary sequence and the pdf of the ACF for a Gold sequence were employed to examine the simplified linear model. The pdf of the multiple-access interference (MAI) component obtained from a probabilistic approach was employed to investigate the discrepancy among the approximations. It is shown that the sum of the square error between the average pdf of the MAI component for the Gold sequence and that of the simplified linear model is 0.0683% which is negligible, and thus the simplified linear model can be used to simplify the evaluation of the BER performance of an asynchronous direct-sequence spread-spectrum multiple-access (A-DS/SSMA) communication system
Keywords :
binary sequences; code division multiple access; correlation methods; error statistics; interference (signal); land mobile radio; pseudonoise codes; random processes; spread spectrum communication; A-DS/SSMA; Gold sequence; average aperiodic cross-correlation function; bit-error-rate performance; direct-sequence spread-spectrum multiple-access communication systems; discrete probability density function; multiple-access interference component; probabilistic approach; random binary sequence; simplified aperiodic cross-correlation model; square error; triangular function; Binary phase shift keying; Binary sequences; Bit error rate; Frequency; Gold; Land mobile radio; Mobile communication; Multiple access interference; Research and development; Spread spectrum communication;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.368777
