Reception apparatus and method in a MIMO wireless communication system

A receiving apparatus and method in a MIMO(Multiple Input Multiple Output) wireless communication system are provided to effectively generate an LLR(Log Likelihood Ratio). A channel estimator(202) estimates a channel of a reception signal via a plurality of receive antennas and provides the same to a MIMO detector(204). The MIMO detector demodulates inputted reception signal vectors according to a MIMO detection method and provides LLRs with respect to the estimated transmission signal vectors to a deinterleaver(206). The deinterleaver deinterleaves the LLRs according to a given rule, and outputs the same. A channel decoder(208) performs soft decision decoding on the LLRs provided from the deinterleaver to restore an information bit sequence.