Title :
The Multi-Level Mapping Sequential Gaussian Approximation for MIMO Detection
Author :
Wang, Fan ; Zhao, Wei ; Xiong, Yong
Author_Institution :
Electromagn. Acad., Zhejiang Univ., Hangzhou
Abstract :
This paper presents a low complexity detection scheme, based on sequential Gaussian Approximation, called multi-level mapping SGA detection, for multi-input multi-output wireless communication systems with high-order QAM modulation. In the SGA detection, only part of transmit symbol combinations contributing significantly to posterior probabilities are retained, having a complexity linear with retained branches number. Due to the property of high-order QAM formats, the new scheme calculates the sequence weight in step of two bits, resulting in a complexity reduction from exponential in the modulation order to linear, compared to basic SGA detection. Simulation results show that the multi-level mapping SGA can provide near the performance of the basic SGA detection
Keywords :
Gaussian processes; MIMO communication; approximation theory; quadrature amplitude modulation; signal detection; MIMO detection; SGA detection; high-order QAM modulation; multi-input multi-output wireless communication systems; multilevel mapping sequential Gaussian approximation; Detectors; Gaussian approximation; Gaussian noise; Interference cancellation; MIMO; Personal digital assistants; Quadrature amplitude modulation; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.28
