Partial relay selection in underlay cognitive networks with fixed gain relays

Syed Imtiaz Hussain, Mohamed Slim Alouini, Mazen Hasna, Khalid Qaraqe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Citations (Scopus)

Abstract

In a communication system with multiple cooperative relays, selecting the best relay utilizes the available spectrum more efficiently. However, selective relaying poses a different problem in underlay cognitive networks compared to the traditional cooperative networks due to interference thresholds to the primary users. In most cases, a best relay is the one which provides the maximum end-to-end signal to noise ratio (SNR). This approach needs plenty of instantaneous channel state information (CSI). The CSI burden could be reduced by partial relay selection. In this paper, a partial relay selection scheme is presented and analyzed for an underlay cognitive network with fixed gain relays operating in the vicinity of a primary user. The system model is adopted in a way that each node needs minimal CSI to perform its task. The best relay is chosen on the basis of maximum source to relay link SNR which then forwards the message to the destination. We derive closed form expressions for the received SNR distributions, system outage, probability of bit error and average channel capacity of the system. The derived results are confirmed through simulations.

Original languageEnglish
Title of host publicationIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
DOIs
Publication statusPublished - 2012
EventIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
Duration: 6 May 20129 Jun 2012

Other

OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
CountryJapan
CityYokohama
Period6/5/129/6/12

Fingerprint

Relay Selection
Channel state information
Relay
Signal to noise ratio
Partial
Channel State Information
Channel capacity
Outages
Telecommunication links
Communication systems
Cooperative Networks
Channel Capacity
Outage Probability
Distribution System
Instantaneous
Communication Systems
Closed-form
Interference
Vertex of a graph
Simulation

Keywords

  • cognitive radio
  • overlay networks
  • relay selection etc.
  • underlay networks
  • user cooperation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Hussain, S. I., Alouini, M. S., Hasna, M., & Qaraqe, K. (2012). Partial relay selection in underlay cognitive networks with fixed gain relays. In IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings [6240207] https://doi.org/10.1109/VETECS.2012.6240207

Partial relay selection in underlay cognitive networks with fixed gain relays. / Hussain, Syed Imtiaz; Alouini, Mohamed Slim; Hasna, Mazen; Qaraqe, Khalid.

IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings. 2012. 6240207.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hussain, SI, Alouini, MS, Hasna, M & Qaraqe, K 2012, Partial relay selection in underlay cognitive networks with fixed gain relays. in IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings., 6240207, IEEE 75th Vehicular Technology Conference, VTC Spring 2012, Yokohama, Japan, 6/5/12. https://doi.org/10.1109/VETECS.2012.6240207
Hussain SI, Alouini MS, Hasna M, Qaraqe K. Partial relay selection in underlay cognitive networks with fixed gain relays. In IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings. 2012. 6240207 https://doi.org/10.1109/VETECS.2012.6240207
Hussain, Syed Imtiaz ; Alouini, Mohamed Slim ; Hasna, Mazen ; Qaraqe, Khalid. / Partial relay selection in underlay cognitive networks with fixed gain relays. IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings. 2012.
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