Joint Precoding and Combining Design for Hybrid Beamforming Systems With Subconnected Structure

Zhang, Zhilong; Wu, Xiaoyong; Liu, Danpu

doi:10.1109/jsyst.2019.2896980

Cited by 27 publications

(33 citation statements)

References 34 publications

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“…Sum-rate for digital beamforming in uplink Sum-rate for GSHBF in uplink Sum-rate for proposed HHBF in uplink Sum-rate for EVD-based HBF in uplink Sum-rate for SVD-based HBF in uplink FIGURE 8 The average ergodic sum-rate versus number of uplink users. The received SNR 𝜌 = 10dB, and N=128 in fully connected architecture…”

Section: Fully-connected Architecturementioning

confidence: 99%

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

Ahmed¹,

Khammari²,

Alraddady

2021

IET Communications

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This paper presents a simple and robust hybrid combiner for the multiuser massive multiple‐input multiple‐output (MIMO) uplink. The hybrid beamforming is used in massive MIMO systems to reduce the number of radio frequency chains. Radio frequency chain consists of power hungry electronic components like mixer, analog‐to‐digital converter / digital‐to‐analog converter etc. This paper proposes a Householder based hybrid beamforming (HHBF) design to simultaneously reduce the beam domain inter‐user interference and increase the sum‐rate performance of massive MIMO uplink. The Householder reflectors generate the orthogonal analog combiner matrix which not only reduces inter‐user interference but also helps reduce the dimension of the digital combiner. It has been shown that the proposed HHBF scheme provides better sum‐rate performance than the Gram–Schmidt based hybrid beamforming design in the real‐World ill‐conditioned MIMO channel. Simulation results show that the beam domain orthogonality error remains less than 0.5 with 0.97 probability and the proposed HHBF provides 25.95% increased sum‐rate at 10 dB SNR.

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Section: Fully-connected Architecturementioning

confidence: 99%

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

Ahmed¹,

Khammari²,

Alraddady

2021

IET Communications

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“…Finally, we can calculate the nth pair of vectors (F RF ) : , n , (F BB [k]) n, : k = 1 K of (17) by using (20) and (23) assuming that other pairs of vectors are given. Then, the contribution of (F RF ) : , n (F BB [k]) n, : of each sub-carrier is removed from F n [k] and the residual matrix have been obtained.…”

Section: Hybrid Precoder Designmentioning

confidence: 99%

“…In [14], a vector-based low complexity hybrid precoder algorithm is proposed to improve the spectral efficiency. In the second category, the hybrid precoder and combiner problem is regarded as a joint optimisation problem [15][16][17][18][19][20]. Sohrabi and Yu [15] propose an iterative hybrid precoder and combiner algorithm and give an inference on the minimum number of RF chains that can realise the optimal performance of massive MIMO systems.…”

Section: Introductionmentioning

confidence: 99%

“…In [19], a joint approach, including user grouping, hybrid beamforming, and power allocation, is proposed to improve achievable sum rate and energy efficiency of mmWave-nonorthogonal multiple access (NOMA) multiuser systems. In [20], the authors propose a successive interference cancellation (SIC) based joint precoding and combining method for mmWave systems with a sub-connected structure. The aforementioned algorithms are investigated for narrowband systems, but they do not consider the hybrid precoder design in wideband systems with the multi-carrier transmission.…”

Section: Introductionmentioning

confidence: 99%

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Alternate hybrid precoding algorithm for wideband millimetre wave massive MIMO systems

et al. 2020

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“…The partially-connected structure possesses lower power consumption compared with the fully-connected structure, since each RF chain is merely connected with a subset of antennas [7]. For partially-connected structure, the hybrid precoder design problem can be considered as a matrix factorization problem and a semidefinite relaxation based AltMin (SDR-AltMin) algorithm is given [8].…”

Section: Introductionmentioning

confidence: 99%

HP-SFC Algorithm for MmWave Massive MIMO Hybrid Precoding Systems

Liu

et al. 2021

Preprint

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This paper presents an alternating iteration hybrid precoding algorithm for the switch network-based dynamic fully-connected (SFC) structure, namely HP-SFC algorithm. Firstly, based on the sparsity of switch network, the optimization problem of the analog switch precoding matrix is transformed into a binary dictionary updating problem, which avoids to deal with the binary constraint straightly. Then, the optimization problem of the analog phase shifter (PS) precoding matrix is modeled as a quadratic unimodular programming problem by the vectorization of the analog PS precoding matrix. So that the analog PS precoding matrix can be readily optimized. Finally, the analog switch precoding matrix, the analog PS precoding matrix and the digital precoding matrix are alternately optimized via the block coordinate descent, the generalized power method and the least square, respectively. Theoretical analysis and simulation results show that the proposed algorithm can provide brilliantly hybrid precoding performence campared with the previous works, for example: 1) it reduces the hybrid precoding matrix residual, so that its spectral efficiency is close to the full digital optimal precoding; 2) it provids at least 15\% energy efficiency improvement comparing with related algorithms.

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Joint Precoding and Combining Design for Hybrid Beamforming Systems With Subconnected Structure

Cited by 27 publications

References 34 publications

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

A low complexity hybrid combiner design for the ill‐conditioned multiuser mmWave massive MIMO uplink

Alternate hybrid precoding algorithm for wideband millimetre wave massive MIMO systems

HP-SFC Algorithm for MmWave Massive MIMO Hybrid Precoding Systems

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