| 摘要 |
A detection process for a receiver of a wireless communication system based on Multiple-Input Multiple-Output antennas ( n T , n R ), said receiver processing observations symbols y derived from symbols x transmitted by an emitter through a channel H ; characterized in that it involves:
- a preprocessing which only depends on the channel H, said preprocessing involving:
- a first QRD decomposition (61) for the purpose of decomposing said channel H into two Q ext and R ext matrices, with Q ext H Q ext = I and R ext being upper triangular;
- a lattice reduction (62) for the purpose of generating Q ˆ¼ ext , R ˆ¼ ext and a transformation matrix T ;
- a second QRD decomposition (63) applied on the matrix R ˆ¼ ext �¢ T - 1 for the purpose of generating two matrixes Q ˆ¼ �¢ ¹ ext and R ˆ¼ �¢ ¹ ext ,
- a loading phase (64, 65, 66) comprising a linear detection process of the observations y for the purpose of generating a value X center;
- a neighborhood search (67-70) performed in the Original Domain Neighborhood (ODN) with a search center being equal to the result X center of said loading phase, said neighborhood search determining a limited number of symbols (K-best). |
