Fronthaul data compression for Uplink CoMP in cloud radio access network (C-RAN)

Qi, Y., Shakir, M. Z., Imran, M. A. , Qaraqe, K. A., Quddus, A. and Tafazolli, R. (2016) Fronthaul data compression for Uplink CoMP in cloud radio access network (C-RAN). Transactions on Emerging Telecommunications Technologies, 27(10), pp. 1409-1425. (doi:10.1002/ett.3088)

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Abstract

The design of efficient wireless fronthaul connections for future heterogeneous networks incorporating emerging paradigms such as cloud radio access network has become a challenging task that requires the most effective utilisation of fronthaul network resources. In this paper, we propose to use distributed compression to reduce the fronthaul traffic in uplink Coordinated Multi-Point for cloud radio access network. Unlike the conventional approach where each coordinating point quantises and forwards its own observation to the processing centre, these observations are compressed before forwarding. At the processing centre, the decompression of the observations and the decoding of the user message are conducted in a successive manner. The essence of this approach is the optimisation of the distributed compression using an iterative algorithm to achieve maximal user rate with a given fronthaul rate. In other words, for a target user rate the generated fronthaul traffic is minimised. Moreover, joint decompression and decoding is studied and an iterative optimisation algorithm is devised accordingly. Finally, the analysis is extended to multi-user case and our results reveal that, in both dense and ultra-dense urban deployment scenarios, the usage of distributed compression can efficiently reduce the required fronthaul rate and a further reduction is obtained with joint operation.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad
Authors: Qi, Y., Shakir, M. Z., Imran, M. A., Qaraqe, K. A., Quddus, A., and Tafazolli, R.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Transactions on Emerging Telecommunications Technologies
Publisher:Wiley
ISSN:2161-3915
ISSN (Online):2161-3915
Published Online:04 August 2016
Copyright Holders:Copyright © 2016 Wiley
First Published:First published in Transactions on Emerging Telecommunications Technologies 27(10):1409-1425
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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