Unified approach to the capacity evaluation of the relay channel

• Published in: IET communications Vol. 3; no. 7; pp. 1208 - 1215
• Main Authors: HODTANI, G. A, AREF, M. R
• Format: Journal Article
• Language: English
• Published: Stevenage Institution of Engineering and Technology 01.07.2009; John Wiley & Sons, Inc
• Subjects: Applied sciences; Broadcasting; Channels; Correlation; Cryptography; Exact sciences and technology; Information, signal and communications theory; Multiple access; Random variables; Relay; Signal and communications theory; Telecommunications and information theory; Theorems; Multiple access; Relay; Relay channel; Security of data; Public key cryptography; Multiple channel; Random variable
• ISSN: 1751-8628; 1751-8636
• DOI: 10.1049/iet-com.2008.0368

The authors indicate the dependence between the inputs of the relay channel with one auxiliary random variable as Cover, El-Gamal, and Salehi, which have done the multiple access channel with arbitrarily correlated sources. Then, by considering broadcast and multiple access sub-channels in the relay channel, the authors describe the essential role of the relay with special Markovity conditions on the auxiliary random variable and channel input-outputs, and unify most of the known capacity theorems into one capacity theorem. The capacity theorem is potentially applicable to a more general class of relay channels including at least the relay channels with known capacity.