| 摘要 |
A detection process for a receiver of a wireless communication system based on Multiple-ln-Multiple-Out antennas, the process involving: - a preprocessing which only depends on the channel H, said preprocessing involving: - A QRD decomposition (61 ) for the purpose of decomposing said channel H into two Q and R matrices, with QHQ = I and R being upper triangular; - a lattice reduction (62) for the purpose ?f generating (formula AA, formula BB) and a permutation matrix T; - a loading phase (63, 64, 65) comprising a linear LRA-Minimum-Mean-Square-Error equalization applied on said symbols y in accordance with the result of said lattice reduction for the purpose of generating a value (formula CC). The process is characterized by the fact that it further involves the steps of: - Performing a neighborhood search with a search center being equal to the result (formula CC) of said lattice reduction; - Determining the -BKest symbols in accordance with a Partial Euclidean Distance (PED) defined in accordance with the following formula (formula DD) - detecting each layer and with the result of said detection performing an update of the search center so as to perform detection of the next layer; - multiplying the estimated value (formula EE) by said matrix T plus quantizing it onto the original constellation so as to generate the estimated value (formula FF). |
