| 摘要 |
<p>Disclosed are a processing method and device for performing space-time decoding on a MIMO signal. The method comprises: step 1. performing QR decomposition on a channel matrix H whose matrix size is N r xN t in a MIMO system, and performing an initialization operation, where N t is the number of transmit antennas, and N r is the number of receive antennas; step 2. according to an input parameter Mu=[Mu 1 ,Mu 2 ,...,M Nt ], a receive signal y, and a QR decomposition result of the channel matrix H, enumerating candidate constellation points of transmit signals in each level of transmit antenna, where M is the number of candidate constellation points enumerated in each level, y=Hs+n, s is a transmit signal whose matrix size is N t x1, and n is a Gaussian white noise whose matrix size is N r x1; step 3. according to the obtained candidate constellation points, calculating an increased Euclidean distance because of adding the selection of a candidate constellation point in the current level; and step 4. according to the sum of increments of Euclidean distances of candidate constellation points calculated at all levels, judging and outputting a space-time code.</p> |
