| 摘要 |
The embodiment of present invention discloses a processing method and apparatus for performing space-time decoding on MIMO signals. The method includes: step 1, performing QR decomposition on a channel matrix H with a matrix size of N r × N t in a MIMO system and performing an initialization operation, wherein N t is the number of transmitting antennas and N r is the number of receiving antennas; step 2, enumerating candidate constellation points of transmitting signals at each level of transmitting antennas according to an input parameter M = [ M 1 , M 2 ,··· , M N t ] , a receiving signal y and a result of the QR decomposition of the channel matrix H, wherein M is the number of the numerated candidate constellation points at each level, y=Hs+n, s is a transmitting signal with a matrix size of N t ×1 , n is white gaussian noise with a matrix size of N r ×1; step 3, calculating increments of a Euclid distance due to addition of selection of a candidate constellation point at present level according to the obtained candidate constellation points; and step 4, deciding and outputting space-time decoding according to the sum of calculated increments of Euclid distances of candidate constellation points at all levels. |
