Fast algorithm for adaptive beamforming of cyclic signals

There has been an explosive increase in the demand of radio channels in cellular communication systems. Due to the finite limit of the frequency spectrum the number of available channels is bounded. This constraint has become a bottleneck of next-generation wireless communication systems. Some array beamforming techniques have been proposed to solve this problem by the space-division multiple access (SDMA). In the paper, a fast adaptive beamforming algorithm for extracting cyclic signals is proposed. Similar to the SCORE algorithm, the new beamformer performs a blind signal extraction. Compared with the SCORE method it has simpler computation and faster convergence rate and higher SINR in many situations of interest