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


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.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: IEEE Vehicular Technology Conference, Toronto, Canada, 2017-09-24 - 2017-09-27
Organisations: Electronics & Computer Science, Southampton Wireless Group
ePrint ID: 411011
Date :
Date Event
16 May 2017Accepted/In Press
Date Deposited: 13 Jun 2017 16:31
Last Modified: 13 Jun 2017 16:31
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/411011

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