TAILIEUCHUNG - Hybrid beamforming for relay-aided mmWave backhaul links

Massive multiple-input multiple-output (MIMO) and millimeter-wave (mmWave) technologies have emerged as a promising solution to enhance the backhaul wireless link in 5G Heterogeneous networks (HetNets). These mmWave backhaul links, however, are very susceptible to a significant path loss due to the blockage of the line-ofsight and massive antenna arrays may not be sufficient to alleviate such losses. To this end, relays are usually deployed to provide alternative routes that help boost links with high path loss. In this paper, therefore, we consider using relay base stations (RBS) in mmWave backhaul links between small cell base stations (SBS) and a macro-cell base station (MBS). It is assumed that the SBSs, the RBSs, and the MBS are all equipped with massive antenna arrays employing hybrid analog and digital beamforming. | Hybrid Beamforming for Relay-Aided mmWave Backhaul links Mostafa Hefnawi 1 Esmael Yahya 1 Jamal Zbitou 2 Mohamed Aboulfatah 2 Hassan Abdelmounim 2 1 Department of Electrical and Computer Engineering Royal Military College of Canada Kingston ON Canada 2 LMEET FST of Settat University Hassan 1 st Settat Morocco Abstract. Massive multiple-input multiple-output MIMO and millimeter-wave mmWave technologies have emerged as a promising solution to enhance the backhaul wireless link in 5G Heterogeneous networks HetNets . These mmWave backhaul links however are very susceptible to a significant path loss due to the blockage of the line-of-sight and massive antenna arrays may not be sufficient to alleviate such losses. To this end relays are usually deployed to provide alternative routes that help boost links with high path loss. In this paper therefore we consider using relay base stations RBS in mmWave backhaul links between small cell base stations SBS and a macro-cell base station MBS . It is assumed that the SBSs the RBSs and the MBS are all equipped with massive antenna arrays employing hybrid analog and digital beamforming. The analog beamformers are based on the selection of fixed multi-beams using a constrained eigenbeamforming scheme while the digital beamformers are based on the maximum ratio transmission and maximum ratio combining MRT MRC schemes that maximize the transmit and receive SINRs of the effective channels created by the actual channel and the analog beamformer. The performance evaluation in terms of the beampatterns and the ergodic channel capacity shows that the proposed HBF scheme achieves near-optimal performance with only 4 RF chains and requires considerably less computational complexity. Keywords Hybrid beamforming HetNets Relays Massive MIMO mmWaves. 1 Introduction Recently millimeter-wave mmWave massive multiple-input multiple-output MIMO technologies 1 2 3 4 5 6 have emerged as a promising solution to enhance the backhaul wireless link in 5G

• Kĩ thuật Viễn thông
• Hybrid beamforming
• Massive MIMO
• Relay aided mmWave backhaul links
• MmWave backhaul links
• Digital beamforming
• Massive MIMO phased array systems
• MIMO phased array systems
• Processing algorithm concepts
• Partition hybrid beamforming systems
• Millimeter wave heterogeneous networks
• Heterogeneous networks
• Millimeter wave
• Employ hybrid analog
• Global Navigation Satellite System
• Anti jamming
• Interference mitigation
• Multi channel GNSS receivers
• Energy efficiency
• MIMO hybrid beamforming
• Millimeter wave systems
• Nonlinear power amplifiers
• Nonlinear PAs should
• Particle swarm optimisation
• Millimetre wave
• Mm Wave systems
• Capacity maximisation
• Hybrid precoding
• MU MIMO
• Millimeter wave mumassive MIMO system
• Optimized hybrid beamforming
• 5G millimeter wave multi cell networks
• Multi cell networks
• Multi cell wireless systems
• Mitigated via coordinated multipoint
• Minimum mean square error
• Hybrid analog and digital beamforming
• Alternating optimization
• Manifold optimization
• MMSE criterion
• Digital predistortion
• Large array transmitters
• Power amplifiers
• Out of band emissions
• Hybrid MIMO transmitters
• Large scale antenna arrays
• Multiple input multiple output
• Multi user multipleinput single output
• Linear beamforming
• báo cáo khoa học
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo
• Cross layer
• User selection
• 5G heterogeneous network
• Millimeter waves
• Orthogonal steering vector
• Multi panel MIMO
• Massive multiple input multiple output
• Data transmission
• 5G systems