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

Entropy

Shlomo Shamai¹  Gerhard Kramer²  Shirin Saeedi Bidokhti³ 

[1] Department of Electrical Engineering, Technion, Haifa 3200003, Israel;Department of Electrical and Computer Engineering, Technical University of Munich, 80333 Munich, Germany;Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA;

关键词: capacity;    coding;    cloud radio access network;   

DOI  :  10.3390/e19110610

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown