Patent ID: 7822142

Claim:
A receiver having multiple receiving antennas, comprising: a spatial multiplexing (SM) detection section for demultiplexing signals received by said multiple receiving antennas; an interference cancellation (IC) section for performing interference cancellation on signals received by said multiple receiving antennas; first switch means for, according to a control signal, switching signals received by said multiple receiving antennas from the branch which the SM detection section is located in to the branch which the interference cancellation section is located in, or from the branch which the interference cancellation section is located in to the branch which the SM detection section is located in; an estimator for performing channel estimation in accordance with the signals received by said multiple receiving antennas and for estimating a current interference level for said receiver; and decision means for, according to said interference level, deciding whether said receiver is located in the SM area or in the IC area, for conveying the decision result to the corresponding transmitter and for notifying said first switch means of the decision result as a control signal, wherein when said receiver is located in the SM area, the signals received by said multiple receiving antennas are processed over the branch which said SM detection section is located in, and when said receiver is located in the IC area, the signals received by said multiple receiving antennas are processed over the branch which said interference cancellation section is located in.