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论文类型： 期刊论文

发表时间： 2014-01-01

发表刊物： IEEE COMMUNICATIONS LETTERS

收录刊物： SCIE、EI、Scopus

卷号： 18

期号： 1

页面范围： 22-25

ISSN号： 1089-7798

关键字： Generalized spatial modulation (GSM); ML detection; sparsity; underdetermined system

摘要： Generalized spatial modulation (GSM) is a novel scheme developed from the conventional single-active antenna spatial modulation (SA-SM). The challenge of the GSM lies at the receiving end. Since more than one antenna is activated, the complexity of ML detection for GSM is much higher than that for SA-SM, especially if the number of antennas is large. Low complexity sub-optimal detections, such as ZF detection or MMSE detection, can be used to detect GSM. However, the performance of these detections is poor and cannot yet be applied in an underdetermined system. Spatial modulation has an inherent property of sparsity. However, to the best of our knowledge, this property has not been used for GSM. In this paper, we exploit this property and propose a suboptimal detection algorithm. The traditional algorithm using sparsity is sensitive to noise and not suitable for the application to communication systems. Therefore, we employ a denoising scheme to counter the effect of the background noise.