Title :
A closed-form BER expression for band-limited DS/SSMA communications
Author :
Cho, Joon Ho ; Jeong, Yeon K. ; Lehnert, James S.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
An accurate closed-form expression of approximate average bit error rate (BER) is derived for band-limited direct-sequence spread-spectrum multiple access (DS/SSMA) communications with aperiodic random quadriphase spreading sequences and the conventional matched filter receiver. Although some closed-form BER expressions have been available, they are only for systems with chip-time-limited chip waveforms and even fail to accurately evaluate the BER for some combinations of system parameters. The proposed expression instantly evaluates the average BER for band-limited systems with arbitrary chip waveforms of interest. Monte-Carlo simulation results are also provided to show the accuracy
Keywords :
Monte Carlo methods; approximation theory; bandlimited communication; digital simulation; error statistics; filtering theory; matched filters; multi-access systems; multiuser channels; radio receivers; random processes; sequences; spread spectrum communication; Monte-Carlo simulation results; Taylor series expansion; accurate closed-form expression; aperiodic random quadriphase spreading sequences; approximate average bit error rate; band-limited DS/SSMA communications; chip waveforms; closed-form BER; conditional Gaussian approximation; direct-sequence spread-spectrum multiple access; matched filter receiver; system parameters; Approximation methods; Bit error rate; Closed-form solution; Computational complexity; Gaussian approximation; Interference; Matched filters; Random variables; Signal processing; Spread spectrum communication;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.905021
