NDLI: A novel precoding scheme for downlink multi-user spatial modulation system

Content Provider	IEEE Xplore Digital Library
Author	Xueru Li Yan Zhang Limin Xiao Xibin Xu Jing Wang
Copyright Year	2013
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing, China (Xueru Li; Yan Zhang; Limin Xiao; Xibin Xu; Jing Wang)
Abstract	Spatial Modulation is a newly developed concept for multi-antenna systems, which could greatly reduce the signal processing complexity and hardware implementation burden faced by these systems today. To improve the spectral efficiency of spatial modulation system, a novel precoding scheme for downlink multi-user system is proposed in this paper. The precoding scheme not only cancels the inter-user interference, but also preserves the information embedded both in constellation symbols as well as in transmit antenna indexes, decomposing the system into independent single-user spatial modulation systems. Simulation results show that with a high transmission rate, the proposed scheme offers a smaller bit error rate than multi-user Zero Forcing precoding in practical SNR region. With the same base station antenna number and single-antenna user number, it also outperforms Zero Forcing precoding in terms of achievable sum rate. Furthermore, systems using our scheme could achieve a multi-user gain over single-user spatial modulation system.
Starting Page	1361
Ending Page	1365
File Size	200753
Page Count	5
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666352
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Modulation Signal to noise ratio Transmitting antennas MIMO Indexes
Content Type	Text
Resource Type	Article

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