A novel multitarget adaptive array algorithm for wireless CDMA systems

Abstract

In CDMA systems several users occupy the same frequency band. An adaptive array utilized in such an environment must be able to separate and extract each user's signal simultaneously. Thus in order to avoid bandwidth overhead, it is preferred that the algorithm used to adapt the weights work without a training sequence, i.e., the algorithm should be blind. LS-DRMTA is such a kind algorithm. We propose a modification in LS-DRMTA in a way that the weight generated by the new algorithm multipath least squares despread respread multitarget array (MLS-DRMTA) can produce a radiation pattern with beams directed toward the several desired signal multipaths.