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RF Chain Reduction for MIMO Systems: A Hardware Prototype
Gong TR(宫铁瑞)1,2,3; Shlezinger, Nir4; Ioushua, Shahar Stein5; Namer, Moshe6; Yang ZJ(杨志家)1,2; Eldar, Yonina C.4
Source PublicationIEEE Systems Journal
Indexed BySCI ; EI
EI Accession number20204909581983
WOS IDWOS:000596009700065
Contribution Rank1
Funding OrganizationNational Key Research and Development Program of China under Grant 2017YFA0700304 ; Israel Science Foundation under Grant 0100101 ; European Union’s Horizon 2020 research and innovation program under Grant 646804-ERC-COG-BNYQ
KeywordChannel estimation hybrid receivers multiple-input multiple-output (MIMO) communications

Radio frequency (RF) chain circuits play a major role in digital receiver architectures, allowing passband communication signals to be processed in baseband. When operating at high frequencies, these circuits tend to be costly. This increased cost imposes a major limitation on future multiple-input–multiple-output (MIMO) communication technologies. A common approach to mitigate the increased cost is to utilize hybrid architectures, in which the received signal is combined in analog into a lower dimension, thus reducing the number of RF chains. In this article we study the design and hardware implementation of hybrid architectures via minimizing channel estimation error. We first derive the optimal solution for complex-gain combiners and propose an alternating optimization algorithm for phase-shifter combiners. We then present a hardware prototype implementing analog combining for RF chain reduction. The prototype consists of a specially designed configurable combining board as well as a dedicated experimental setup. Our hardware prototype allows us evaluating the effect of analog combining in MIMO systems using actual communication signals. The experimental study, which focuses on channel estimation accuracy in MIMO channels, demonstrates that using the proposed prototype, the achievable channel estimation performance is within a small gap in a statistical sense from that obtained using a costly receiver in which each antenna is connected to a dedicated RF chain.

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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorShlezinger, Nir; Yang ZJ(杨志家)
Affiliation1.Key Laboratory of Networked Control Systems, State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Faculty of Mathematics and Computer Science, Weizmann Institute of Science, Rehovot 76100, Israel
5.School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
6.Faculty of Electrical Engineering, Technion, Haifa 32000, Israel
Recommended Citation
GB/T 7714
Gong TR,Shlezinger, Nir,Ioushua, Shahar Stein,et al. RF Chain Reduction for MIMO Systems: A Hardware Prototype[J]. IEEE Systems Journal,2020,14(4):5296-5307.
APA Gong TR,Shlezinger, Nir,Ioushua, Shahar Stein,Namer, Moshe,Yang ZJ,&Eldar, Yonina C..(2020).RF Chain Reduction for MIMO Systems: A Hardware Prototype.IEEE Systems Journal,14(4),5296-5307.
MLA Gong TR,et al."RF Chain Reduction for MIMO Systems: A Hardware Prototype".IEEE Systems Journal 14.4(2020):5296-5307.
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