PERFORMANCE OF ANTENNA-ARRAY RECEIVER ALGORITHMS FOR CDMA

This paper considers a number of techniques that have been proposed fo r spatial filtering purposes in code division multiple access (CDMA) a ntenna array receivers. There are two main types of algorithms: (i) ma tched filter methods that maximise the signal power at the filter outp ut and (ii) interference suppression algorithms that maximise the sign al-to-interference plus noise ratio (SINR) of the filter output. Theor etical and simulation results are presented to compare the convergence performance, in terms of the attained SINR, for the algorithms in a C DMA cellular system. A method of trading convergence performance with complexity for algorithms using the maximum SINR approach is also disc ussed. (C) 1998 Elsevier Science B.V. All rights reserved.