Combined power/channel allocation method for efficient spectrum sharing in TV white space scenario

Abstract

The spectrum scarcity and the corresponding efficient spectrum utilization are one of the major challenges in wireless communications today. Cognitive radios are the devices that will enable spectrum availability detection and efficient opportunistic spectrum sharing. This paper addresses the problems of joint power and channel allocation in a spectrum sharing scenario for WiFi-like secondary users in TV white spaces. Due to the high complexity in obtaining optimal power/channel allocation strategies, the paper proposes a suboptimal algorithm that combines the power/channel allocation methods using Nash Bargaining Solution (NBS) game theoretic approach, while still achieving fair spectrum utilization. In the given scenario the sharing algorithm maximizes the number of supported secondary users while jointly optimizing the power and channel allocation. Numerical results show that the introduction of combined power/channel allocation method for efficient spectrum sharing among secondary users enhances the efficient available spectrum use.

Optimizing City-Wide White-Fi Networks in TV White Spaces

“…Authors in [34] propose an approach that maximizes the throughput of a cellular secondary network while maintaining a required signal-to-interference-and-noise (SINR) for all TV receivers and requires cooperation between secondary devices and TV networks. Authors in [35] use the Nash bargaining solution to allocate power and channel to nodes of a secondary network. Their network operates like an infrastructure mode WiFi network (clients communicate via an access point).…”