Capacity bound for discrete memoryless user-relaying channel

Ki Ryang Moon, Do Sik Yoo, Seong Jun Oh

Research output: Contribution to journalArticlepeer-review


In this paper, we consider the discrete memoryless user relaying channel (DMURC) in which a user-relay switches its operational mode symbol-by-symbol. In particular, we obtain upper and lower bounds on the channel capacity for the general DMURC and then show that these the upper and lower bounds coincide for degraded DMURC. It is also shown that the capacity of the degraded DMURC can be achieved using two separate codebooks corresponding to the two UR states. While the UR is assumed to switch states symbol-by-symbol, the results in this paper is the same as when the UR switches states packet-by-packet.

Original languageEnglish
Pages (from-to)855-868
Number of pages14
JournalKSII Transactions on Internet and Information Systems
Issue number3
Publication statusPublished - 2012 Mar


  • CSI
  • Channel capacity
  • Channel state information
  • Cognitive radio
  • Relay channel
  • User-relay

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications


Dive into the research topics of 'Capacity bound for discrete memoryless user-relaying channel'. Together they form a unique fingerprint.

Cite this