NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Cooperative resource management in cognitive WiMAX with femto cells
INFOCOM'10 Proceedings of the 29th conference on Information communications
Downlink Channel Assignment and Power Control for Cognitive Radio Networks
IEEE Transactions on Wireless Communications
| Hi-index | 0.00 |
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.