Low-Complexity Optimal Sphere Decoder for Differential Spatial Modulation
Li, Zhi; Cheng, Xiang; Han, Shuangshuang; Wen, Miaowen; Yang, Liuqing; Jiao, Bingli
2015-12
会议名称IEEE Globe Communications Conference
会议录名称IEEE Globe Communications Conference
会议日期2015.12.6-10
会议地点San Diego, CA, USA
摘要Motivated by the concept of spatial modulation (SM), a differential scheme has been recently proposed. This scheme, termed as differential (D-)SM, dispenses with channel estimation while maintains a similar bit error rate (BER) performance to SM. The conventional optimal DSM detector based on a maximum likelihood (ML) criterion, however, gives rise to prohibitive computational complexity when either the space-domain or signal-domain constellation size is large. In this paper, we propose a low-complexity yet optimal detection algorithm for DSM by utilizing sphere decoding (SD). The complexity analysis concerning Euclidian distance equation for DSM-SD is derived. Simulation results show that the proposed DSM-SD algorithm maintains an identical BER performance and achieves a significant reduction of computational complexity compared with the DSM-ML algorithm. The DSM-SD algorithm is especially efficient when the number of receive antennas is large. Moreover, compared with SD applied to SM, its application to DSM is verified to be more useful and attractive.
关键词Sphere Decoder
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/11136
专题复杂系统管理与控制国家重点实验室_先进控制与自动化
通讯作者Han, Shuangshuang
推荐引用方式
GB/T 7714
Li, Zhi,Cheng, Xiang,Han, Shuangshuang,et al. Low-Complexity Optimal Sphere Decoder for Differential Spatial Modulation[C],2015.
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