Spread-spectrum cognitive networking: Distributed channelization and routing


We study a framework that captures the interdependencies between spreading channelization and routing for a secondary multi-hop cognitive radio network that operates cognitively to coexist with primary users. We consider interactions between dynamic routing and code-division channelization functionalities for cognitive radio networks. With this respect, we study the effect of joint routing, spreading code and power allocation on the network throughput. A solution for joint routing and spread-spectrum channelization is proposed as a localized approximation of the throughput-maximizing problem. Specifically, power and spreading code are allocated to guarantee the quality of service of the on-going primary and secondary transmissions, while the routing algorithm dynamically selects relays based on the network traffic dynamics and on the achievable data rates on different secondary links. Index Terms – Cognitive radio networks, routing, power allocation, code-channel allocation, cross-layer design.

DOI: 10.1109/MILCOM.2011.6127472

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@inproceedings{Gao2011SpreadspectrumCN, title={Spread-spectrum cognitive networking: Distributed channelization and routing}, author={Kanke Gao and Lei Ding and Tommaso Melodia and Stella N. Batalama and Dimitris A. Pados and John D. Matyjas}, booktitle={MILCOM}, year={2011} }