Joint Opportunistic Scheduling and Network Coding for Bidirectional Relay Channel Conference Paper uri icon

abstract

  • In this paper, we consider a two-way communication system in which two users communicate with each other through an intermediate relay over block-fading channels. We investigate the optimal opportunistic scheduling scheme in order to maximize the long-term average transmission rate in the system assuming symmetric information flow between the two users. Based on the channel state information, the scheduler decides that either one of the users transmits to the relay, or the relay transmits to a single user or broadcasts to both users a combined version of the two users' transmitted information by using linear network coding. We obtain the optimal scheduling scheme by using the Lagrangian dual problem. Furthermore, in order to characterize the gains of network coding and opportunistic scheduling, we compare the achievable rate of the system versus suboptimal schemes in which the gains of network coding and opportunistic scheduling are partially exploited. 2013 IEEE.

name of conference

  • 2013 IEEE International Symposium on Information Theory

published proceedings

  • 2013 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS (ISIT)

author list (cited authors)

  • Shaqfeh, M., Zafar, A., Alnuweiri, H., & Alouini, M.

citation count

  • 10

complete list of authors

  • Shaqfeh, Mohammad||Zafar, Ammar||Alnuweiri, Hussein||Alouini, Mohamed-Slim

publication date

  • July 2013