A New Approach for Fast Generalized Complex Sphere Decoding Algorithm in MIMO Systems

摘要：

A fast generalized complex sphere decoder (GCSD) is proposed in this paper. This GCSD can be used to solve the under-determined MIMO systems. Moreover, it can handle not only the QAM and PSK constellations, but also the arbitrary complex constellations. The basic idea is to partition the transmitted signal vector into two sub-vectors. After some transformations, we can use a search scheme which is similar to sphere decoding and a conventional complex sphere decoder to solve these two sub-vectors respectively. Simulation results show that the complexity of our GSCD is significantly lower than the exhaustive search scheme on the under-determined part of the transmitted signal vectors.

关键词： Generalized Complex Sphere Decoder (GCSD) MIMO system wireless communications

作者: Chao Liu

作者单位: School of Communication Engineering, Hangzhou Dianzi University Hangzhou, China, 310018

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）