Energy-Efficient Hybrid Analog and Digital Precoding for MmWave MIMO Systems With Large Antenna Arrays

By Xinyu Gao, Linglong Dai, Shuangfeng Han, C. I, Robert W. Heath. IEEE Journal on Selected Areas in Communications, 2015

937 citations recorded by the source corpus.

Millimeter wave (mmWave) MIMO will likely use hybrid analog and digital precoding, which uses a small number of RF chains to reduce the energy consumption associated with mixed signal components like analog-to-digital components not to mention baseband processing complexity. However, most hybrid precoding techniques consider a fully connected architecture requiring a large number of phase shifters, which is also energy-intensive. In this paper, we focus on the more energy-efficient hybrid precoding with subconnected architecture, and propose a successive interference cancelation (SIC)-based hybrid precoding with near-optimal performance and low complexity. Inspired by the idea of SIC for multiuser signal detection, we first propose to decompose the total achievable rate optimization problem with nonconvex constraints into a series of simple subrate optimization problems, each of which only considers one subantenna array. Then, we prove that maximizing the achievable subrate of each subantenna array is equivalent to simply seeking a precoding vector sufficiently close (in terms of Euclidean distance) to the unconstrained optimal solution. Finally, we propose a low-complexity algorithm to realize SIC-based hybrid precoding, which can avoid the need for the singular value decomposition (SVD) and matrix inversion. Complexity evaluation shows that the complexity of SIC-based hybrid precoding is only about 10% as complex as that of the recently proposed spatially sparse precoding in typical mmWave MIMO systems. Simulation results verify that SIC-based hybrid precoding is near-optimal and enjoys higher energy efficiency than the spatially sparse precoding and the fully digital precoding.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/1168f44fa4f157247a7884e87f280315b8b313d0

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Citations in the corpus

Energy-Efficient Resource Allocation for Downlink Non-Orthogonal Multiple Access Network (2016, background): “To further meet overwhelming requirement of data rates, various new techniques have been proposed in recent years, and these techniques include massive multiple-input multiple output (MIMO) [3], millimeter wave communications [4], LTE-U [5], C-RAN [6], SON [7] and non-orthogonal multiple access (NOM”
Deep-Learning-Based Millimeter-Wave Massive MIMO for Hybrid Precoding (2019, background): “In [4], a successive interference cancellation-based hybrid precoding that can realize excellent performance with low complexity was presented, in which the sum rate optimization problem with non-convex constraints was divided into several sub-rate optimization issues.”
A Joint Precoding Framework for Wideband Reconfigurable Intelligent Surface-Aided Cell-Free Network (2020, background): “The extension to the hybrid precoding [40] is left for future work.”
Millimeter Wave Communications for Future Mobile Networks (2017, background): “Moreover, it has been shown to achieve the performance close to that of N1 [121].”
Channel Estimation for Millimeter-Wave Massive MIMO With Hybrid Precoding Over Frequency-Selective Fading Channels (2016, methodology): “For mmWave m assive MIMO with the phase shifter network based hybrid precoding [1]–[3] or electromagnetic lens bas ed beamspace MIMO [4], [5], the number of radio frequency (RF) chains is usually much smaller than tha t of antennas for reduced hardware cost and power consumption.”
A Survey on Hybrid Beamforming Techniques in 5G: Architecture and System Model Perspectives (2018, background): “The authors of [108] propose a successive interference cancellation-based hybrid precoding with near-optimal performance and low complexity.”
A Comprehensive Survey on Millimeter Wave Communications for Fifth-Generation Wireless Networks: Feasibility and Challenges (2020, methodology): “In the works of [6], [13], [24], [26], [262], [273], perfect CSI knowledge availability is assumed at the transmitters, in the design of hybrid analog-digital precoders and combiners in an attempt”
Spectrum and Energy-Efficient Beamspace MIMO-NOMA for Millimeter-Wave Communications Using Lens Antenna Array (2017, methodology): “In fact, it has been demonstrated that mmWave massive MIMO can achieve orders-of-magnitude increase in system capacity [6].”
Millimeter-Wave Massive MIMO Communication for Future Wireless Systems: A Survey (2018, background): “required hardware components and system complexity, and the performance is roughly comparable with the optimal (but costly and unfeasible) fully-digital architecture [211].”
Millimeter Wave Communication: A Comprehensive Survey (2018, result): “Similar to [83], Gao et al. [84] design an energy-efﬁcient and successive interference cancelation (SIC)-based hybrid precoding scheme for sub-connected architecture.”