Patent ID: 6108565
Filing Date: 2000-08-22
Classification: H04B

Abstract:
A method for wireless communication comprising:a) transmitting from a mobile unit a code modulated signal obtained by modulating original symbols by a predetermined pseudo-noise sequence, wherein the original symbols represent an original information signal;b) receiving at a base station antenna array N complex valued signal sequences received in parallel from N corresponding antenna elements;c) correlating in parallel each of the N signal sequences with the pseudo-noise sequence to select N received signals comprising N received symbols corresponding to a common one of the original symbols;d) transforming in parallel the N received symbols to obtain N complex-valued transformer outputs;e) correlating collectively the N transformer outputs with a set of complex array calibration vectors to obtain spatial information, wherein each array calibration vector represents a response of the antenna array to a calibration signal originating in a predetermined direction relative to the base station;f) repeating steps (b), (c), (d), (e) to obtain spatial information about multiple signal components;g) spatially filtering a subsequent set of N complex valued signal sequences in accordance with the spatial information about multiple signal components; andh) demodulating the spatially filtered subsequent set to obtain a symbol from the original information signal.