Title :
Double layer sphere decoder and its improvement in multiple-antenna systems
Author :
Zongkai Yang ; Liu, Cliao ; He, Jianhua
Author_Institution :
Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Hubei, China
fDate :
31 Aug.-4 Sept. 2004
Abstract :
We propose a double layer sphere decoder (DLSD) for under-determined MIMO systems with fewer receive antennas than transmit antennas. This decoder can reach the maximum-likelihood decoding performance with less complexity. We further propose an adaptive DLSD that adjusts the initial squared search radius C according to the SNR adoptively. Simulation results show that both DLSDs have far less complexity than the existing GSDs.
Keywords :
MIMO systems; adaptive decoding; antenna arrays; radio networks; receiving antennas; transmitting antennas; MIMO systems; adaptive DLSD; double layer sphere decoder; maximum-likelihood decoding; receive antennas; transmit antennas; wireless communication; Decoding; Equations; Helium; MIMO; Matrix decomposition; Maximum likelihood estimation; Polynomials; Postal services; Receiving antennas; Transmitting antennas;
Conference_Titel :
Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on
Print_ISBN :
0-7803-8406-7
DOI :
10.1109/ICOSP.2004.1441656
