Title :
Capacity evaluation of spread spectrum multiple access
Author :
Van Rooyen, P.G.W. ; Ferreira, H.C.
Author_Institution :
Altech Telecomms, Boksburg, South Africa
Abstract :
This paper investigates the capacity of spread spectrum multiple access (SSMA) in a non-cellular environment under additive white Gaussian noise (AWGN) conditions. A theoretical system model is proposed that allows one to evaluate such a system. The probability density function of the average degradation due to the interuser interference is determined by simulations and the validity of approximating the interuser interference as a Gaussian random variable is verified. The capacity of SSMA is shown to be low compared to TDMA when operated in a non-cellular environment without forward error control (FEC) coding
Keywords :
Gaussian noise; channel capacity; multi-access systems; radiofrequency interference; spread spectrum communication; white noise; AWGN; Gaussian random variable; SSMA; TDMA; additive white Gaussian noise; capacity evaluation; interuser interference; non-cellular environment; probability density function; spread spectrum multiple access; theoretical system model; AWGN; Additive white noise; Degradation; Error correction; Forward error correction; Interference; Probability density function; Random variables; Spread spectrum communication; Time division multiple access;
Conference_Titel :
Communications and Signal Processing, 1993., Proceedings of the 1993 IEEE South African Symposium on
Conference_Location :
Jan Smuts Airport
Print_ISBN :
0-7803-1292-9
DOI :
10.1109/COMSIG.1993.365863
