Generalized Beamspace Modulation Using Multiplexing: A Breakthrough in mmWave MIMO

This paper proposes a generalized beamspace modulation using multiplexing (GBMM) scheme for millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications with reduced radio frequency (RF) chains. Besides achieving a multiplexing gain over the selected beamspace set, GBMM additionally...

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Vydáno v:IEEE journal on selected areas in communications Ročník 37; číslo 9; s. 2014 - 2028
Hlavní autoři: Guo, Shuaishuai, Zhang, Haixia, Zhang, Peng, Zhao, Pengjie, Wang, Leiyu, Alouini, Mohamed-Slim
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.09.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Activation
Algorithms
Antennas
Ascent
beamspace modulation
Broadband
Design optimization
hybrid precoder and combiner
Millimeter wave MIMO
Millimeter waves
MIMO communication
Modulation
Multiplexing
Orthogonal Frequency Division Multiplexing
Radio frequency
Signal to noise ratio
spectral efficiency
Switches
ISSN:0733-8716, 1558-0008
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Shrnutí:This paper proposes a generalized beamspace modulation using multiplexing (GBMM) scheme for millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications with reduced radio frequency (RF) chains. Besides achieving a multiplexing gain over the selected beamspace set, GBMM additionally makes use of the index of the beamspace set to carry information. In the proposed GBMM, the beamspace sets are non-uniformly activated. We investigate the spectral efficiency (SE) of the proposed GBMM and the SE-oriented beamspace set activation probability optimization as well as the hybrid precoder design. In the hybrid precoder design procedure, we first design the fully-digital precoders and then adopt the optimized fully-digital precoders to design the hybrid precoders. A gradient ascent algorithm is developed to find the optimal fully-digital precoders and precoder activation probabilities. In the high signal-to-noise-ratio (SNR) regime, closed-form solutions of the fully-digital precoders and the precoder activation probabilities are derived. Moreover, we investigate the impact of the hybrid receiver structure on the performance of GBMM, propose a coding method to realize the optimized precoder activation, and discuss the extension to orthogonal frequency division multiplexing (OFDM)-based mmWave broadband communications. Both analytical and numerical results show that GBMM outperforms the spatial multiplexing over the best beamspace set in terms of SE, which has been well recognized as the best transmission solution in mmWave MIMO communications.
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ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2019.2929399