| 摘要 |
Disclosed is a signal detection method for a receiver of a Multiple-Input Multiple-Output (MIMO) communication system having n<SUB>T </SUB>and n<SUB>R </SUB>(where n<SUB>R </SUB>is greater than or equal to n<SUB>T</SUB>) transmission and reception antennas, respectively, and an n<SUB>T</SUB>xn<SUB>R </SUB>channel matrix. The signal detection method includes selecting a plurality of sub-channel matrices having smaller dimensions than the n<SUB>T</SUB>xn<SUB>R </SUB>channel matrix, estimating transmission symbols received from corresponding transmission antennas using a maximum likelihood decoding method with respect to a received signal corresponding to each of the sub-channel matrices, estimating transmission symbols received from the remaining transmission antenna(s) using the estimated transmission symbols, temporarily storing a candidate symbol set composed of the estimated transmission symbols, and comparing candidate symbol sets corresponding to all the sub-channel matrices and determining the smallest candidate symbol set as a transmission symbol set.
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