A low-complexity optimal sphere decoder for differential spatial modulation

Zhi Li; Xiang Cheng; Shuangshuang Han; Miaowen Wen; Liu Qing Yang; Bingli Jiao

doi:10.1109/GLOCOM.2014.7417823

A low-complexity optimal sphere decoder for differential spatial modulation

Zhi Li, Xiang Cheng, Shuangshuang Han, Miaowen Wen, Liu Qing Yang, Bingli Jiao

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Scopus citations

Abstract

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.

Original language	English (US)
Title of host publication	2015 IEEE Global Communications Conference, GLOBECOM 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479959525
DOIs	https://doi.org/10.1109/GLOCOM.2014.7417823
State	Published - 2015
Externally published	Yes
Event	58th IEEE Global Communications Conference, GLOBECOM 2015 - San Diego, United States Duration: Dec 6 2015 → Dec 10 2015

Publication series

Name	2015 IEEE Global Communications Conference, GLOBECOM 2015

Other

Other	58th IEEE Global Communications Conference, GLOBECOM 2015
Country/Territory	United States
City	San Diego
Period	12/6/15 → 12/10/15

Bibliographical note

Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grants (61571020, 61172105, 61501461); by the National 973 Project under Grant 2013CB336700; by the National 863 Project under Grants 2014AA01A706 and SS2015AA011306; by the National Natural Science Foundation under Grant CNS-1343189; and by the Early Career Development Award of SKLMCCS (Y3S9021F34)

Publisher Copyright:
© 2015 IEEE.

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10.1109/GLOCOM.2014.7417823

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Li, Z., Cheng, X., Han, S., Wen, M., Yang, L. Q., & Jiao, B. (2015). A low-complexity optimal sphere decoder for differential spatial modulation. In 2015 IEEE Global Communications Conference, GLOBECOM 2015 Article 7417823 (2015 IEEE Global Communications Conference, GLOBECOM 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GLOCOM.2014.7417823

A low-complexity optimal sphere decoder for differential spatial modulation. / Li, Zhi; Cheng, Xiang; Han, Shuangshuang et al.
2015 IEEE Global Communications Conference, GLOBECOM 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7417823 (2015 IEEE Global Communications Conference, GLOBECOM 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Li, Z, Cheng, X, Han, S, Wen, M, Yang, LQ & Jiao, B 2015, A low-complexity optimal sphere decoder for differential spatial modulation. in 2015 IEEE Global Communications Conference, GLOBECOM 2015., 7417823, 2015 IEEE Global Communications Conference, GLOBECOM 2015, Institute of Electrical and Electronics Engineers Inc., 58th IEEE Global Communications Conference, GLOBECOM 2015, San Diego, United States, 12/6/15. https://doi.org/10.1109/GLOCOM.2014.7417823

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A low-complexity optimal sphere decoder for differential spatial modulation

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