ISSN:
1572-834X
Keywords:
CDMA performance
;
fading channels
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract This paper presents an efficient and accurate performance evaluation technique for binary and quaternary direct-sequence spread-spectrum multiple-access (DS-SSMA) systems with deterministic signature sequences over Rician fading channels, without resorting to any (e.g. Gaussian) assumptions with respect to the distribution of the multiple-access interference (MAI). The method is based on a reduced-complexity formulation of the characteristic function method. In previous versions of this technique, the characteristic function of the MAI component of the decision statistic was expressed in terms of a double integral over the distributions of phase and delay. The new formulation, developed herein for both binary and quaternary modulation with a correlation receiver, generates a compact expression for the characteristic function of the MAI, eliminates the need for numerical integration over the phase distribution and yields a computational complexity reduction proportional to the spreading gain. This renders the characteristic function method more attractive for application to wideband CDMA systems and by extension, to more complex transceiver structures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008866712744
