Patent ID: 7421039
Filing Date: 2008-09-02
Classification: H04B,H04L,H04W

Abstract:
1. A method for increasing data throughput in a communication system employing multiple antennas, comprising: demultiplexing an input data stream into M substreams, each of the M substreams having a data rate lower than a data rate of the input data stream; transmitting signals representing said M substreams from a transmit array of M antennas to at least one receiver based on at least one of a number of the M antennas to employ and on/off patterns that are specified for the M antennas; and adjusting at least one parameter based on feedback information including at least one of an integer representing the number of the M antennas to employ for the transmitting and a vector including a pattern of ones and zeros representing the on/off patterns that are specified for the M antennas used for the transmitting, wherein the number of M antennas is represented by a parameter s that is defined by the equation: wherein I represents an identity matrix, H