Symbol-Level Hybrid Precoding in mmWave Multiuser MISO Systems

Recently, symbol-level precoding has emerged as a novel efficient solution in multi-user multi-antenna downlink systems, since it can exploit multi-user interference (MUI) and transform it into useful signal. In this correspondence, we attempt to apply symbol-level precoding into the well-known hybr...

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Published in:	IEEE communications letters Vol. 23; no. 9; pp. 1636 - 1639
Main Authors:	Liu, Rang, Li, Hongyu, Li, Ming
Format:	Journal Article
Language:	English
Published:	New York IEEE 01.09.2019 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Communications systems Computer simulation Euclidean geometry hybrid precoding Interference Iterative algorithms Millimeter wave (mmWave) communications Millimeter wave communication Millimeter wave technology Millimeter waves MISO (control systems) MISO communication multiple-input single-output (MISO) Optimization Phase shifters Precoding Radio frequency symbol-level precoding
ISSN:	1089-7798, 1558-2558
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Abstract	Recently, symbol-level precoding has emerged as a novel efficient solution in multi-user multi-antenna downlink systems, since it can exploit multi-user interference (MUI) and transform it into useful signal. In this correspondence, we attempt to apply symbol-level precoding into the well-known hybrid precoding architecture in multi-user multi-input single-output (MU-MISO) millimeter wave (mmWave) communication systems. Particularly, we aim to design the symbol-varying digital precoder and the analog precoder with low-resolution phase shifters (PSs) to optimize symbol detection performance under the transmit power constraint and the discrete phase constraint. To handle this difficult joint optimization problem, we propose to minimize the Euclidean distance between the optimal fully-digital precoder and the hybrid precoder. An efficient iterative algorithm is developed to solve this problem. Simulation results demonstrate the advantages of symbol-level precoding and validate the effectiveness of our proposed symbol-level hybrid precoding algorithm.
AbstractList	Recently, symbol-level precoding has emerged as a novel efficient solution in multi-user multi-antenna downlink systems, since it can exploit multi-user interference (MUI) and transform it into useful signal. In this correspondence, we attempt to apply symbol-level precoding into the well-known hybrid precoding architecture in multi-user multi-input single-output (MU-MISO) millimeter wave (mmWave) communication systems. Particularly, we aim to design the symbol-varying digital precoder and the analog precoder with low-resolution phase shifters (PSs) to optimize symbol detection performance under the transmit power constraint and the discrete phase constraint. To handle this difficult joint optimization problem, we propose to minimize the Euclidean distance between the optimal fully-digital precoder and the hybrid precoder. An efficient iterative algorithm is developed to solve this problem. Simulation results demonstrate the advantages of symbol-level precoding and validate the effectiveness of our proposed symbol-level hybrid precoding algorithm.
Author	Liu, Rang Li, Ming Li, Hongyu
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SubjectTerms	Communications systems Computer simulation Euclidean geometry hybrid precoding Interference Iterative algorithms Millimeter wave (mmWave) communications Millimeter wave communication Millimeter wave technology Millimeter waves MISO (control systems) MISO communication multiple-input single-output (MISO) Optimization Phase shifters Precoding Radio frequency symbol-level precoding
Title	Symbol-Level Hybrid Precoding in mmWave Multiuser MISO Systems
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