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One-Bit Precoding and Constellation Range Design for Massive MIMO With QAM Signaling
Sohrabi, Foad1; Liu, Feng2; Yu, Wei1
2018-06-01
Source PublicationIEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING
ISSN1932-4553
Volume12Issue:3Pages:557-570
AbstractThe use of low-resolution digital-to-analog converters (DACs) for transmit precoding provides crucial energy efficiency advantage for massive multiple-input multiple-output (MIMO) implementation. This paper formulates a quadrature amplitude modulation (QAM) constellation range and a one-bit symbol-level precoding design problem for minimizing the average symbol error rate (SER) in downlink massive MIMO transmission. A tight upper bound for the SER with low-resolution DAC precoding is first derived. The derived expression suggests that the performance degradation of one-bit precoding can be interpreted as a decrease in the effective minimum distance of the QAM constellation. Using the obtained SER expression, we propose a QAM constellation range design for the single-user case. It is shown that in the massive MIMO limit, a reasonable choice for constellation range with one-bit precoding is that of the infinite-resolution precoding with per-symbol power constraint, but reduced by a factor of root 2/pi or about 0.8. The corresponding minimum distance reduction translates to about a 2 dB gap between the performance of one-bit precoding and infinite-resolution precoding. This paper further proposes a low-complexity heuristic algorithm for the one-bit precoder design. Finally, the proposed QAM constellation range and precoder design are generalized to the multiuser downlink. We propose to scale the constellation range for the infinite-resolution zero-forcing (ZF) precoding with per-symbol power constraint by the same factor of root 2/pi for one-bit precoding. The proposed one-bit precoding scheme is shown to be within 2 dB of infiniteresolution ZF. In term of number of antennas, one-bit precoding requires about 50% more antennas to achieve the same performance as infinite-resolution precoding.
KeywordLow-resolution digital-to-analog converter (DAC) massive multiple-input multiple-output (MIMO) one-bit precoding quadrature amplitude modulation (QAM) symbol error rate (SER) symbol-level precoding zero-forcing (ZF)
DOI10.1109/JSTSP.2018.2823267
Language英语
Funding ProjectNatural Science and Engineering Research Council (NSERC) of Canada via a Steacie Fellowship ; Qualcomm Technologies, Inc. ; National Natural Science Foundation of China[11671419] ; National Natural Science Foundation of China[11688101]
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000433906200012
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/30497
Collection计算数学与科学工程计算研究所
Affiliation1.Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math & Sci Engn Comp, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China
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Sohrabi, Foad,Liu, Feng,Yu, Wei. One-Bit Precoding and Constellation Range Design for Massive MIMO With QAM Signaling[J]. IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING,2018,12(3):557-570.
APA Sohrabi, Foad,Liu, Feng,&Yu, Wei.(2018).One-Bit Precoding and Constellation Range Design for Massive MIMO With QAM Signaling.IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING,12(3),557-570.
MLA Sohrabi, Foad,et al."One-Bit Precoding and Constellation Range Design for Massive MIMO With QAM Signaling".IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING 12.3(2018):557-570.
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