Title :
Precise bit error rate calculation for asynchronous DS-CDMA in Nakagami fading
Author :
Cheng, Julian ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
Accurate bit error rate calculation is considered for a binary, direct sequence spread spectrum multiple access system using conventional matched filter receivers and long code sequences in flat fading Nakagami channels. To this end, a closed-form expression for the characteristic function of a sum of multiple interfering signals is found. The exact average bit error rate is expressed as a single integral with a well-behaved integrand function. Numerical results obtained from the new accurate bit error rate expression are compared with the standard Gaussian approximation
Keywords :
code division multiple access; error statistics; fading channels; filtering theory; integral equations; matched filters; multi-access systems; multiuser channels; radio receivers; radiofrequency interference; signal detection; spread spectrum communication; Gaussian approximation; Nakagami fading; asynchronous DS-CDMA; binary DS-SSMA system; bit error rate; characteristic function; closed-form expression; coherent detection; direct sequence spread spectrum multiple access; exact average bit error rate; flat fading Nakagami channels; integral; integrand function; long code sequences; matched filter receivers; multiple interfering signals; precise BER calculation; AWGN; Bit error rate; Fading; Fourier series; Frequency; Matched filters; Multiaccess communication; Multiple access interference; Random sequences; Spread spectrum communication;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891284
