Patent ID: 7469021
Filing Date: 2008-12-23
Classification: H01Q,H04B,H04J,H04W

Abstract:
1. A null beam method wherein at least two remote users located at within a given cell or sector and positioned at different angular directions relative to the base station, are each enabled to receive separate communications from a base station simultaneously transmitting said separate communications d i , where i=1, 2, to the at least two remote users, said base station transmitting to said remote users over an antenna array having three (3) antennas, comprising: said base station: a) simultaneously applying one of a same and a correlated spreading code to the separate communications d b) separately modulating the data d wherein each modulator of the complex weights of the first and second sets of complex weights is a function of the channel impulse responses from the antenna array to locations of the at least two remote users; b) summing the modulated data signals d c) transmitting the summed signals from the antenna array.