Synergy routing and dynamic spectrum allocation in multi‐hop cognitive radio networks. Issue 2 (1st June 2014)

• Record Type: Journal Article
• Authors: Zhu, Xiaorong; Zhu, Hongbo
• Is Part Of: IET networks. Volume 3:Issue 2(2014)
• Page Start: 82
• Page End: 87
• Publication Date: 2014-06-01
• Subjects: channel capacity -- cognitive radio -- telecommunication network routing -- wireless channels; synergy routing -- dynamic spectrum allocation -- multihop cognitive radio networks -- channel capacity -- spectrum efficiency -- unused spectral regions -- underused spectral regions -- distributed algorithm -- localised algorithm -- opportunistic routing -- spectrum allocation -- utility‐based routing scheme -- synergistic cognitive radio -- residual energy -- underlay spectrum -- overlay spectrum; Computer network architectures -- Periodicals; Computer network protocols -- Periodicals; Information networks -- Periodicals; Telecommunication systems -- Periodicals; 004.605
• DOI: 10.1049/iet-net.2012.0158
• Languages: English
• ISSNs: 2047-4954

Abstract

Abstract : To maximise spectrum efficiency and channel capacity, both unused (white) and underused (grey) spectral regions need to be exploited. The authors propose a distributed and localised algorithm for joint opportunistic routing and spectrum allocation for multi‐hop cognitive radio networks, and design a synergy routing, a utility‐based routing scheme that achieves synergistic cognitive radio benefits of overlay and underlay techniques and simultaneously maximises spectrum efficiency. The synergy routing opportunistically calculates the next hop according to the spectrum dynamics and residual energy of candidate relays and harvests the benefits from the cooperation of underlay and overlay spectrum. Simulation results indicate that our synergy prototype improves delay and throughput performance, while maintaining the autonomy and heterogeneity of individual underlay and overlay networks.