Amplify-and-forward relay networks with underlay spectrum access over frequency selective fading channels
2015 (English)In: IEEE Vehicular Technology Conference Proceedings, IEEE Communications Society, 2015, Vol. 2015-July, Article number 7145676- p.Conference paper (Refereed)
In this paper, we investigate the system performance in terms of outage probability and symbol error rate of cognitive relay networks with underlay spectrum access over Nakagami-m frequency selective fading channels. Underlay spectrum access is deployed at the secondary transmitters, i.e., the secondary source and relay, as a means of providing high spectrum utilization efficiency. It is assumed that the whole system operates in frequency selective fading channels which commonly occur in broadband communication networks. In addition, direct communication from the secondary source to destination is present together with relay communication such that the selection combining is applied at the destination. That is, either the direct or relay channel is selected for communication depending on which one provides the best signal-to-noise ratio (SNR). Analytical expressions for crucial performance measures such as outage probability and symbol error rate are formulated. Based on these analytical outcomes, respective system performance is investigated through numerical results for various system parameters and scenarios. Â© 2015 IEEE.
Place, publisher, year, edition, pages
IEEE Communications Society, 2015. Vol. 2015-July, Article number 7145676- p.
IEEE Vehicular Technology Conference Proceedings, ISSN 1550-2252
Fading channels; Relay control systems; Signal encoding; Signal to noise ratio; Spectroscopy; Telecommunication networks, Amplify-and-forward relay networks; Analytical expressions; Broadband Communication; Cognitive relay networks; Direct communications; Relay communications; Spectrum utilization efficiency; Symbol error rate (SER), Frequency selective fading
IdentifiersURN: urn:nbn:se:bth-10631DOI: 10.1109/VTCSpring.2015.7145676ISI: 000371404700092ScopusID: 2-s2.0-84940398813ISBN: 978-1-4799-8088-8OAI: oai:DiVA.org:bth-10631DiVA: diva2:854777
81st IEEE Vehicular Technology Conference, VTC Spring 2015; Glasgow; United Kingdom; 11 May 2015 through 14 May