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Adaptive transceiver design for C-RAN in mmWave communications

Adaptive transceiver design for C-RAN in mmWave communications
Adaptive transceiver design for C-RAN in mmWave communications
An adaptive array design is proposed for hybrid beam forming in millimeter wave (mmWave) communications in the context of cloud radio access networks (C-RAN). More explicitly, the adaptive design focuses on the physical layer aspect of C-RAN. The adaptation is performed at two levels, depending on whether the channel is of line-of-sight (LOS) or non-line-of sight (NLOS) nature. Firstly, the antenna array architecture can be adapted between a fully-connected and a sub-array-connected architecture. Then, the employment of a digital precoder in the baseband is decided based on both the channel conditions and the architecture employed. We show that the proposed adaptive design performs better than the fully-connected and sub-array-connected constituent designs, when the channel varies between LOS and NLOS scenarios. Then, we extend our proposed adaptive design to mmWave communications in the context of C-RAN, where we propose an adaptive virtual cell formation algorithm, where a user can be connected to one or two remote radio heads (RRHs), depending on the channel conditions.
2169-3536
Satyanarayana, Katla
f3436daa-e5da-4b3c-ab4b-ad07a0cef99a
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Satyanarayana, Katla
f3436daa-e5da-4b3c-ab4b-ad07a0cef99a
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Satyanarayana, Katla, El-Hajjar, Mohammed and Hanzo, Lajos (2017) Adaptive transceiver design for C-RAN in mmWave communications IEEE Access

Record type: Article

Abstract

An adaptive array design is proposed for hybrid beam forming in millimeter wave (mmWave) communications in the context of cloud radio access networks (C-RAN). More explicitly, the adaptive design focuses on the physical layer aspect of C-RAN. The adaptation is performed at two levels, depending on whether the channel is of line-of-sight (LOS) or non-line-of sight (NLOS) nature. Firstly, the antenna array architecture can be adapted between a fully-connected and a sub-array-connected architecture. Then, the employment of a digital precoder in the baseband is decided based on both the channel conditions and the architecture employed. We show that the proposed adaptive design performs better than the fully-connected and sub-array-connected constituent designs, when the channel varies between LOS and NLOS scenarios. Then, we extend our proposed adaptive design to mmWave communications in the context of C-RAN, where we propose an adaptive virtual cell formation algorithm, where a user can be connected to one or two remote radio heads (RRHs), depending on the channel conditions.

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Accepted/In Press date: 20 November 2017
e-pub ahead of print date: 20 November 2017

Identifiers

Local EPrints ID: 416756
URI: http://eprints.soton.ac.uk/id/eprint/416756
ISSN: 2169-3536
PURE UUID: 3d63d69d-169c-461a-9eec-05d269d8fbbb
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: 08 Jan 2018 17:30
Last modified: 08 Jan 2018 17:30

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Contributors

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

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