Title

Sparsity-Aided Iterative Receiver for Large Scale Under-Determined MIMO Systems

Abstract

In this paper, we propose a sparsity-aided iterative receiver for large scale under-determined multiple-input multiple-output (UD-MIMO) systems. The proposed scheme is motivated by the fact that most conventional receivers produce a sparse residual error vector, which is the difference between the actual transmitted symbol vector and the estimated one. The sparse feature of the residual error vector is utilized to locate the support set of the erroneously detected symbols by using the compressive sensing (CS) framework. We can then remove the effects of the correctly detected symbols and only update the soft information of the symbols with detection errors. Since the number of error symbols is usually much less than that of receive antennas, the sparsity-aided receiver equivalently convert the system into an over-determined MIMO system, and the soft information update of the error symbols can be performed with simple linear receivers. Simulation results demonstrate that our proposed sparsity-aided iterative receiver can achieve significant performance gains over conventional UD-MIMO receivers, at the cost of a small complexity overhead.

Meeting Name

18th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) (2017: Jul.3-6, Sapporo, Japan)

Department(s)

Electrical and Computer Engineering

Sponsor(s)

National Natural Science Foundation (China)Shenzhen Subject ArrangementsShenzhen Peacock PlanShenzhen Fundamental Research Project

Comments

This work was supported in part by National Natural Science Foundation of China (Grant No. 61571267), in part by Shenzhen Subject Arrangements (JCYJ20160331184124954), in part by Shenzhen Peacock Plan (No. 1108170036003286), and in part by Shenzhen Fundamental Research Project (JCYJ20150401112337177). The work of J. Wu was supported in part by the U.S. National Science Foundation (NSF) under Grants ECCS-1202075.

Keywords and Phrases

Channel estimation; Errors; MIMO systems; Receiving antennas; Signal receivers; Wireless telecommunication systems; Compressive sensing; Detection error; Iterative receivers; Linear receiver; Performance Gain; Receive antenna; Soft information; Under-determined; Signal processing

International Standard Book Number (ISBN)

978-1-5090-3009-5

International Standard Serial Number (ISSN)

1948-3252

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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