Opportunistic relaying with cooperative diversity has been introduced in  as a simple alternative protocol to the distributed space-time coded protocol while achieving the same diversity-multiplexing tradeoff performance as a point-to-point multiple-input multiple-output scheme. In this paper, we derive the upper and lower bounds for the cumulative distribution function of the signal-to-noise ratio per hop, and then provide their probability density function and moment generating function.We also derive approximate but tight closed-form expressions for the lower and upper bounds of the outage probability of opportunistic relaying based on decode-and-forward transmission under the assumption of unbalanced/balanced hops and independent, identically distributed Rayleigh fading channels.
Bibliographical noteFunding Information:
Manuscript received November 1, 2007; revised March 20, 2008 and July 22, 2008; accepted October 2, 2008. The associate editor coordinating the review of this paper and approving it for publication was J. Andrews. This is an extended version of work which was presented at the IEEE Veh. Technol. Conf. (VTC’08-Spring), Marina Bay, Singapore, May 2008. This work was supported in part by the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2007-612-D00109) and in part by a NPRP grant from the Qatar National Research Fund (a member of Qatar Foundation).
- Cooperative diversity
- Opportunistic relaying
- Outage probability
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics