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.
Recommended Citation
P. Zhao et al., "Sparsity-Aided Iterative Receiver for Large Scale Under-Determined MIMO Systems," Proceedings of the 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications (2017, Sapporo, Japan), Institute of Electrical and Electronics Engineers (IEEE), Jul 2017.
The definitive version is available at https://doi.org/10.1109/SPAWC.2017.8227771
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 Arrangements
Shenzhen Peacock Plan
Shenzhen Fundamental Research Project
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.
Publication Date
01 Jul 2017
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.