Patent ID: 7095814
Filing Date: 2006-08-22
Classification: H04B

Abstract:
1. A space-time array receiving system to which a chip-level temporal reference beamforming algorithm is applied, the system comprising: a plurality of digital beamforming networks for forming beams of signals received through a plurality of antennas by spatial-filtering the signals, to thereby generate spatial-filtered signals; a plurality of demodulating means for demodulating the spatial-filtered signals to generate demodulated signals; correlating means located in each of the plurality of demodulating means, for estimating a fading channel signal based on pilot channel signals; Doppler frequency estimating means for estimating Doppler frequency of the fading channel signal to generate Doppler frequency estimated values; correlation length selection means for selecting a correlation length of the pilot channel signals based on the Doppler frequency estimated values and based on a mean value of the correlation length previously selected and the correlation length currently selected; a plurality of reference signal generation means for generating reference signals based on output signals from the correlating means; and a plurality of weight vector estimating means for generating weight vectors based on the reference signals and the signals received and for providing the weight vectors to the digital beamforming networks.