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Open AccessFeature PaperArticle

Capacity Bounds on the Downlink of Symmetric, Multi-Relay, Single-Receiver C-RAN Networks

Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany
Department of Electrical Engineering, Technion, Haifa 3200003, Israel
Author to whom correspondence should be addressed.
Entropy 2017, 19(11), 610;
Received: 17 July 2017 / Revised: 6 November 2017 / Accepted: 6 November 2017 / Published: 14 November 2017
(This article belongs to the Special Issue Network Information Theory)
The downlink of symmetric Cloud Radio Access Networks (C-RANs) with multiple relays and a single receiver is studied. Lower and upper bounds are derived on the capacity. The lower bound is achieved by Marton’s coding, which facilitates dependence among the multiple-access channel inputs. The upper bound uses Ozarow’s technique to augment the system with an auxiliary random variable. The bounds are studied over scalar Gaussian C-RANs and are shown to meet and characterize the capacity for interesting regimes of operation. View Full-Text
Keywords: capacity; coding; cloud radio access network capacity; coding; cloud radio access network
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Saeedi Bidokhti, S.; Kramer, G.; Shamai, S. Capacity Bounds on the Downlink of Symmetric, Multi-Relay, Single-Receiver C-RAN Networks. Entropy 2017, 19, 610.

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