Patent ID: 7251460
Filing Date: 2007-07-31
Classification: H04B

Abstract:
1. A radio communication system having a communication channel comprising a plurality of paths between a primary and a secondary station, wherein the communication channel is wideband, wherein the primary station comprises a plurality of antennas that consists of a number of antennas and further comprises transmitting means having means for separating a current signal for transmission into a plurality of sub-streams and for transmitting, for current reception by said secondary station, each of the plurality of sub-streams of said current signal via a respective one or more of the plurality of antennas, said plurality of sub-streams of said current signal consisting of a number of sub-streams that is no more than said number of antennas, and wherein the secondary station comprises at least one antenna, receiving means for currently receiving signals comprising said plurality of sub-streams of said current signal, said at least one antenna collectively constituting a number of antennas that is smaller than said number of sub-streams of said current signal being currently received, sampling means for determining at least as many substantially uncorrelated received signal samples as said number of sub-streams of said current signal and extraction means for extracting the transmitted sub-streams of said current signal from the signal samples.