Title :
Hardware Design of Sphere Decoding for MIMO Systems
Author :
Liu, Zhaohui ; Dickson, Kevin ; McCanny, John
Author_Institution :
Inst. of Electron., Queen´´s Univ. Belfast
Abstract :
Sphere decoding is a powerful approach for maximum-likelihood (ML) detection but the algorithm has a high data dependency and its complexity increases exponentially. This paper presents a hardware architecture for the implementation of this algorithm. According to the algorithm complexity and the data dependency graph, it is partitioned as arithmetic operations and logic operations. Furthermore, through design optimization, some complex operations are avoided and the parallelism of the algorithm is explored. The experiment shows the average decoding rate 3.3 Mbits/s is achievable for a MIMO system with 4 transmit and 4 receive antennas
Keywords :
MIMO systems; field programmable gate arrays; logic design; maximum likelihood decoding; maximum likelihood detection; radio equipment; 3.3 Mbits/s; MIMO systems; arithmetic operations; data dependency graph; hardware design; logic operations; maximum-likelihood detection; sphere decoding; Design optimization; Hardware; Lattices; MIMO; Matrix decomposition; Maximum likelihood decoding; Maximum likelihood detection; Partitioning algorithms; Receiving antennas; Transmitting antennas;
Conference_Titel :
SOC Conference, 2005. Proceedings. IEEE International
Conference_Location :
Herndon, VA
Print_ISBN :
0-7803-9264-7
DOI :
10.1109/SOCC.2005.1554512
