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Robust Baseband Compression Against Congestion in Packet-Based Fronthaul Networks Using Multiple Description Coding

1
Division of Electronic Engineering, Chonbuk National University, Jeonju 54896, Korea
2
Department of Informatics, King’s College London, London WC2R2NA, UK
3
Department of Electrical Engineering, Technion, Haifa 32000, Israel
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(4), 433; https://doi.org/10.3390/e21040433
Received: 4 February 2019 / Revised: 18 April 2019 / Accepted: 22 April 2019 / Published: 24 April 2019
(This article belongs to the Special Issue Information Theory for Data Communications and Processing)
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Abstract

In modern implementations of Cloud Radio Access Network (C-RAN), the fronthaul transport network will often be packet-based and it will have a multi-hop architecture built with general-purpose switches using network function virtualization (NFV) and software-defined networking (SDN). This paper studies the joint design of uplink radio and fronthaul transmission strategies for a C-RAN with a packet-based fronthaul network. To make an efficient use of multiple routes that carry fronthaul packets from remote radio heads (RRHs) to cloud, as an alternative to more conventional packet-based multi-route reception or coding, a multiple description coding (MDC) strategy is introduced that operates directly at the level of baseband signals. MDC ensures an improved quality of the signal received at the cloud in conditions of low network congestion, i.e., when more fronthaul packets are received within a tolerated deadline. The advantages of the proposed MDC approach as compared to the traditional path diversity scheme are validated via extensive numerical results. View Full-Text
Keywords: robust compression; congestion; packet-based fronthaul; multiple description coding; cloud radio access network; broadcast coding; eCPRI robust compression; congestion; packet-based fronthaul; multiple description coding; cloud radio access network; broadcast coding; eCPRI
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Park, S.-H.; Simeone, O.; Shamai (Shitz), S. Robust Baseband Compression Against Congestion in Packet-Based Fronthaul Networks Using Multiple Description Coding. Entropy 2019, 21, 433.

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