Abstract: A code division multiple access downlink receiver is disclosed for providing wireless communication between a base station and a mobile station in which the receiver is implemented. The receiver comprises a cell searcher for receiving at least one signal from the base station and retrieving therefrom a common code relating to a cell, and a code generator for generating a set of common and dedicated codes relating to at least one communication channel using the output of the cell searcher. The receiver also comprises a path searcher for receiving the at least one signal and performing a search for multiple paths by which the at least one signal arrives at the receiver, and a canceller for canceling data in the at least one communication channel from the at least one signal based on the output of the code generator and path searcher.

Abstract: A method for downlink beamforming in a frequency-division-duplex wireless communications system comprising a base station with an antenna array and terminals that are physically remote from said base station, the method comprising the steps of: receiving at said base station antenna array combinations of arriving uplink signals from said plurality of remote terminals, estimating an uplink beamforming weight vector for each of said terminals from said combinations of arriving uplink signal; identifying uplink nulls and an uplink main beam position from said uplink beamforming weight vector; transforming each of said uplink nulls to form a corresponding downlink null; generating a downlink beamforming weight vector from all downlink nulls; and transmitting a set of information signals from said base station antenna array according to said downlink. beamforming weights.