An accelerated soft-output sphere decoding algorithm for MIMO system

Authors:
Yang Chun-ping;Jin Xin
Affiliations:
School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, China and School of Information Engineering, Beijing University of Posts and Telecommunications, Be ...;School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

An accelerated soft-output sphere decoding algorithm is proposed for Multiple input and Multiple output (MIMO) system with Vertical Bell Labs Layered Space-Time (V-BLAST) structure. Combined with low-density parity-check (LDPC) code, the performance and complexity of the proposed algorithm are simulated and compared with the classical soft-output sphere decoding algorithm. As the simulation results show, the accelerated algorithm has obvious complexity reduction at the cost of little performance losses.