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Performance Evaluation of GSM Traffic Transmission over Cognitive Radio Networks under Opportunistic Spectrum Sharing Collisions
Abstract
Cognitive Radio networks and channel sharing are emerging as a new paradigm of communication in multimedia and wireless networks. In this chapter, the authors consider a secondary use application that consists of carrying TDMA traffic between the mobile and the base station for GSM networks over a Cognitive Radio network. Therefore, packets are not only lost by reason of Primary traffic interruptions, but the authors consider the opportunistic spectrum sharing which is the cornerstone of the Cognitive Radio concept as the major cause of collisions between several Secondary Users. The authors introduce their specific collision model, and they propose a solution consisting of the creation of many secondary user links with high reliability using a specific algorithm introduced here to alleviate traffic collisions. The authors evaluate the secondary traffic transmission performance in view of the Spectral Efficiency, and they outline the achieved gains of using the proposed solution. Finally, the authors highlight the recent trend in CR literature, which consists of leveraging the TV white spaces to deploy and enhance next generation cellular networks such as LTE.
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