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Indexed by:期刊论文

Date of Publication:2014-01-01

Journal:IEEE COMMUNICATIONS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:18

Issue:1

Page Number:22-25

ISSN No.:1089-7798

Key Words:Generalized spatial modulation (GSM); ML detection; sparsity; underdetermined system

Abstract: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.