NDLI: Analogue beamforming solution for beam-alignment problem

Content Provider	IET Digital Library
Author	Rastegari, Mahdi Olfat, Ali Amini, Ebrahim
Abstract	Analogue only beamforming generally refers to a structure of analogue phase shifters that have no control over the amplitude of the signals and are utilised in millimetre-wave massive multi-input multi-output systems to reduce the cost and power consumption. Conventional analogue only beamforming methods are based on beam-training and subspace sampling where the transmitter and receiver select the best beamformer and combiner from a list of predefined beam patterns to maximise the beamforming gain. In this study, first, the beam-alignment problem is formulated as a quadratic optimisation problem with quadratic constraints. Then, a practical solution for analogue only beamforming is proposed to maximise beamforming gain. The proposed method has no assumption on the array structure or isotropic antenna elements in the array. Also, a new method is proposed to design sub-codebooks to reduce the construction time of the codebook. Simulation results also corroborate the analytical results and performance of the proposed method.
Starting Page	2576
Ending Page	2583
Page Count	8
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 15, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2020.0150
Journal	IET Communications
Publisher Date	2020-06-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analogue Beamforming Solution Analogue Phase Shifters Antenna Array Array Signal Processing Array Structure Beam-alignment Problem Beam-training Beamforming Gain Combiner Conventional Analogue Millimetre-wave Massive Multiinput Multioutput System MIMO Communication Optimisation Optimisation Technique Phase Shifter Power Consumption Predefined Beam Pattern Quadratic Constraint Quadratic Optimisation Problem Radio Link And Equipment Receiver Signal Processing And Detection SubSpace Sampling Transmitter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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