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Entropy 2017, 19(11), 610; doi:10.3390/e19110610

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

1
Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
2
Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany
3
Department of Electrical Engineering, Technion, Haifa 3200003, Israel
*
Author to whom correspondence should be addressed.
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)
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Abstract

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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MDPI and ACS Style

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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