Science and Education Publishing International Transaction of Electrical and Computer Engineers System 2 6 2014 12 10 Distributed Cognitive Routing in Multi-channel Multi-hop Networks with Accessibility Consideration 149 157 EN Mehdi Golestanian Department of Electrical Engineering, Birjand University, Birjand, Iran Mohammad Reza Azimi Reza Ghazizade ITECES2014261 10.12691/iteces-2-6-1 2014 04 18 2014 04 22 2014 12 10 Among Cognitive Radio Network (CRN) research topics, routing algorithms especially for multi-channel networks are in the early stages. In this paper, we design a novel cognitive routing scheme for multi-channel multi-hop wireless networks. The main contribution of the proposed routing scheme is the sub-optimal low computational complexity which makes it applicable for distributed network architecture with power constraints. Other important aspect of the proposed routing scheme is considering the objectives related to the network performance, accessibility and efficient spectrum utilization jointly. As the simulation results demonstrate the presented scheme provides a significant improvement in the spectral efficiency and adequate QoS in term of delay propagation and interference in CRN.