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Beam Selection-Based Hybrid Precoding
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), 2021The deployment of large antenna arrays at the base station is a prerequisite for operating at the millimeter wave bands. The large antenna arrays are required to achieve high beamforming gains and thus to guarantee sufficient received signal power.
Mariam Mussbah +2 more
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Hybrid Precoding for HAP Massive MIMO Systems
2020A hybrid precoding scheme is proposed for high altitude platform (HAP) massive multiple-input multiple-output (MIMO) systems to obtain the radio frequency (RF) precoder and the baseband precoder with limited RF chains. We first exploit duality theory to derive the relation between the statistical channel state information (SCSI) and RF precoder, which ...
Pingping Ji +3 more
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Wideband hybrid precoder for massive MIMO systems
2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2015This paper studies wideband hybrid precoder for downlink space-division multiple-access and orthogonal frequency-division multiple-access (SDMA-OFDMA) massive multi-input multi-output (MIMO) systems. We first derive an iterative algorithm to alternatingly optimize the phase-shifter based wideband analog precoder and low-dimensional digital precoders ...
Lingxiao Kong +2 more
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Full-Duplex mmWave Communication with Hybrid Precoding and Combining
2020 28th European Signal Processing Conference (EUSIPCO), 2021We investigate the design of hybrid precoders and combiners for a millimeter wave (mmWave) point-to-point bidirectional link in which both nodes transmit and receive simultaneously and on the same carrier frequency. In such full-duplex configuration, mitigation of self-interference (SI) becomes critical.
Roberto López-Valcarce +1 more
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Hybrid Precoding Scheme with Partial CSI at the Transmitter
2012This work proposes an Hybrid Precoding (HP) method in a Multiple-Input/Multiple-Output (MIMO) system with the objective of reducing the computational complexity inherent to nonlinear precoding methods. We show that linear precoders work better for low Signal-to- Noise Ratio (SNR) while nonlinear precoders, as in the case of the nonlinear Tomlinson ...
Josmary Labrador +3 more
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Linear Space-Time Precoder with Hybrid ARQ Transmission
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007Hybrid automatic-repeat-request(HARQ) scheme can be incorporated with the linear precoder in multi-input multi- output(MIMO) transmission to ensure highly reliable communications. To fully utilize type-I HARQ diversity gain especially in the slow fading channels, we propose the optimal design principle of linear precoders, whose column vectors are ...
Kan Zheng +3 more
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Subarray hybrid precoding for massive MIMO capacity maximization
2017 IEEE 17th International Conference on Ubiquitous Wireless Broadband (ICUWB), 2017An effective solution for reducing complexity and power consumption of massive MIMO systems is hybrid beam-forming (HB) using analog precoding at RF and digital precoding at the baseband. Researchers have studied HB, assuming optimal antenna implementation, ideal environment, and full rank effective channel.
Mohammed Alarfaj, Huaping Liu 0002
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Hybrid Diversity Maximization Precoding for the Multiuser MIMO Downlink
2011 IEEE International Conference on Communications (ICC), 2011In this paper, we present a high-performance hybrid linear precoding scheme for the downlink of multiuser multiple-input multiple-output (MU-MIMO) systems based on the combination of an iterative modified regularized block diagonalization (IMRBD) precoding and minimum mean square error (MMSE) precoding.
Farhan Khalid, Joachim Speidel
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Hybrid Precoding/Combining for Massive MIMO with Hybrid ARQ
2018Because of poor channel conditions, correct reception at a certain target data rate can sometimes become impossible. Therefore, packet retransmission protocols are used in modern wireless communications systems to improve the reliability of data transmission.
Tho Le-Ngoc, Ruikai Mai
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