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Millimeter wave hybrid beamforming with DFT-MUB aided precoder codebook design

Millimeter wave hybrid beamforming with DFT-MUB aided precoder codebook design
Millimeter wave hybrid beamforming with DFT-MUB aided precoder codebook design
The millimeter wave (mmWave) frequency band offers substantial hitherto unused spectral resources for future wireless communication systems in order to meet the increasing capacity demand. However, mmWave frequencies suffer from high propagation losses, which may be mitigated by directional beamforming in addition to baseband precoding. This is usually referred to as hybrid beamforming. In this paper, we investigate the so-called discrete Fourier transform-mutually unbiased bases (DFT-MUB) aided codebook design conceived for limited-feedback mmWave systems, where the MUB aided codebook is applied in the baseband, while the DFT codebook is invoked for RF analog phase shifters. We demonstrate that our DFT-MUB codebook design performs similarly to the optimal digital precoding matrix, where the precoder is selected as the right singular matrix of the channel. However, our solution significantly reduces the search complexity in the baseband, while performing within 2.5 dB from the optimal digital precoder.
Katla, Satyanarayana
f3436daa-e5da-4b3c-ab4b-ad07a0cef99a
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Katla, Satyanarayana
f3436daa-e5da-4b3c-ab4b-ad07a0cef99a
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Katla, Satyanarayana, El-Hajjar, Mohammed and Hanzo, Lajos (2017) Millimeter wave hybrid beamforming with DFT-MUB aided precoder codebook design At IEEE Vehicular Technology Conference, Toronto, Canada. 24 - 27 Sep 2017.

Record type: Conference or Workshop Item (Paper)

Abstract

The millimeter wave (mmWave) frequency band offers substantial hitherto unused spectral resources for future wireless communication systems in order to meet the increasing capacity demand. However, mmWave frequencies suffer from high propagation losses, which may be mitigated by directional beamforming in addition to baseband precoding. This is usually referred to as hybrid beamforming. In this paper, we investigate the so-called discrete Fourier transform-mutually unbiased bases (DFT-MUB) aided codebook design conceived for limited-feedback mmWave systems, where the MUB aided codebook is applied in the baseband, while the DFT codebook is invoked for RF analog phase shifters. We demonstrate that our DFT-MUB codebook design performs similarly to the optimal digital precoding matrix, where the precoder is selected as the right singular matrix of the channel. However, our solution significantly reduces the search complexity in the baseband, while performing within 2.5 dB from the optimal digital precoder.

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More information

Accepted/In Press date: 16 May 2017
Venue - Dates: IEEE Vehicular Technology Conference, Toronto, Canada, 2017-09-24 - 2017-09-27
Organisations: Electronics & Computer Science, Southampton Wireless Group

Identifiers

Local EPrints ID: 411011
URI: http://eprints.soton.ac.uk/id/eprint/411011
PURE UUID: bd9bfd4b-02e8-4208-be79-11ff663b15ce
ORCID for Mohammed El-Hajjar: ORCID iD orcid.org/0000-0002-7987-1401
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 13 Jun 2017 16:31
Last modified: 27 Sep 2017 04:01

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Contributors

Author: Satyanarayana Katla
Author: Mohammed El-Hajjar ORCID iD
Author: Lajos Hanzo ORCID iD

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