Opportunistic spectrum access based on distributed spectrum sensing using collaborative relay nodes under energy constraints

Ph.D. thesis proposal

Advisors

Charly Poulliat (University of Toulouse, IRIT/INP-ENSEEIHT)
Martial Coulon (University of Toulouse, IRIT/INP-ENSEEIHT)

Abstract

Opportunistic spectrum access (OSA) has received increasing attention due to its potential for improving spectrum efficiency allowing secondary users to search for and exploit local and instantaneous spectrum opportunities with limited interference to primary users. In this framework, optimal methods have been proposed in distributed spectrum sensing and access, assuming that secondary users have limited sensing capabilities. In parallel, collaborative sensing has shown to be an efficient strategy for improving sensing performance. However, these strategies can generate an important signaling traffic for an efficient collaboration between users. Another strategy consists of using relays to benefit from sensing diversity without generating an important signaling traffic among users. In this thesis, we propose to study OSA based on distributed spectrum sensing using collaborative relay nodes under energy constraints. In this context, we aim at developing a new spectrum sensing and access strategies when an energy-constrained collaborative relay networks is available for the secondary users.

Keywords

Cognitive Radio, Distributed Spectrum Sensing, Cooperative sensing, Wireless Communication.

Requirements

The knowledge required for this work includes statistical signal processing and wireless communications.