Cooperative diversity with selfish users

• Published in: 2008 42nd Annual Conference on Information Sciences and Systems pp. 1184 - 1188
• Main Authors: Dehnie, S., Memon, N.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-03-2008
• Subjects: Analytical models; Costs; Cultural differences; Diversity methods; Flip-flops; Military computing; Physical layer; Relays; Waste materials; Wireless networks
• ISBN: 1424422469; 9781424422463
• DOI: 10.1109/CISS.2008.4558698

Cooperation is socially desirable when users obey the rules of cooperation. This is the case in networks controlled by a single entity, such as military networks. On the other hand, in commercial wireless networks wherein users may behave for selfish intentions, it may be difficult to achieve a socially efficient cooperation without a mechanism that ensures users adhere to the rules of cooperation. In the absence of such mechanism, cooperation will be dominated by social-dilemma where each user is tempted to deviate from cooperation. In this paper we examine performance of Amplify-and-Forward (AF) in the presence a selfish user. We model selfish behavior as On-Off channel where the user randomly flip-flops between cooperative and selfish states. Based on such random characterization, we show both analytically and by simulation the physical layer consequences of selfish users in cooperative diversity.