Interference Suppression Using Smart Antenna in CDMA Using a Novel Algorithm

Smart antennas are usually employed at the base stations to radiate narrow beams to serve different users by using spatial processing. In this paper the use of adaptive antenna arrays on CDMA networks to suppress cochannel interference is carried out using newly proposed SMI-RLS algorithm which will compensate the singularity problem of SMI algorithm and minimizes the complexity of RLS algorithm. The simulation results proved that the proposed SMI-RLS algorithm is able to place deeper nulls than the other algorithms and it has minimum complexity compared to RLS algorithm.