Patent ID: 8416876

Claim:
A receiver controlling a multi-user multiple input multiple output (MIMO) system, the receiver comprising: a channel estimator estimating a channel with respect to a plurality of pairs of transmission/receipt antennas; a feedback unit determining whether feedback information is generated based on the estimated channel and transmitting the generated feedback information to a transmitter, the feedback unit further including: a decoding order feedback unit determining whether a decoding order of the data streams is fed back, and calculating and feeding back an optimum decoding order; and a signal-to-interference-plus-noise ratio (SINR) feedback unit determining whether an SINR for each stream is fed back, calculating the SINR for each stream by cancelling interference between streams according to a predetermined decoding order, and feeding back the SINR for each stream; and a restorer receiving a signal encoded based on the feedback information from the transmitter and restoring a plurality of data streams by applying successive interference cancellation to the received signal.