Best relay selection using SNR and interference quotient for underlay cognitive networks

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

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

20 Citations (Scopus)

Abstract

Cognitive networks in underlay settings operate simultaneously with the primary networks satisfying stringent interference limits. This condition forces them to operate with low transmission powers and confines their area of coverage. In an effort to reach remote destinations, underlay cognitive sources make use of relaying techniques. Selecting the best relay among those who are ready to cooperate is different in underlay settings than traditional non-cognitive networks. In this paper, we present a relay selection scheme which uses the quotient of the relay link signal to noise ratio (SNR) and the interference generated from the relay to the primary user to choose the best relay. The proposed scheme optimizes this quotient in a way to maximize the relay link SNR above a certain value whereas the interference is kept below a defined threshold. We derive closed expressions for the outage probability and bit error probability of the system incorporating this scheme. Simulation results confirm the validity of the analytical results and reveal that the relay selection in cognitive environment is feasible in low SNR regions.

Original languageEnglish
Title of host publication2012 IEEE International Conference on Communications, ICC 2012
Pages4176-4180
Number of pages5
DOIs
Publication statusPublished - 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, Canada
Duration: 10 Jun 201215 Jun 2012

Other

Other2012 IEEE International Conference on Communications, ICC 2012
CountryCanada
CityOttawa, ON
Period10/6/1215/6/12

Fingerprint

Signal to noise ratio
Telecommunication links
Power transmission
Outages
Error probability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Hussain, S. I., Abdallah, M., Alouini, M. S., Hasna, M., & Qaraqe, K. (2012). Best relay selection using SNR and interference quotient for underlay cognitive networks. In 2012 IEEE International Conference on Communications, ICC 2012 (pp. 4176-4180). [6364463] https://doi.org/10.1109/ICC.2012.6364463

Best relay selection using SNR and interference quotient for underlay cognitive networks. / Hussain, Syed Imtiaz; Abdallah, Mohamed; Alouini, Mohamed Slim; Hasna, Mazen; Qaraqe, Khalid.

2012 IEEE International Conference on Communications, ICC 2012. 2012. p. 4176-4180 6364463.

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

Hussain, SI, Abdallah, M, Alouini, MS, Hasna, M & Qaraqe, K 2012, Best relay selection using SNR and interference quotient for underlay cognitive networks. in 2012 IEEE International Conference on Communications, ICC 2012., 6364463, pp. 4176-4180, 2012 IEEE International Conference on Communications, ICC 2012, Ottawa, ON, Canada, 10/6/12. https://doi.org/10.1109/ICC.2012.6364463
Hussain SI, Abdallah M, Alouini MS, Hasna M, Qaraqe K. Best relay selection using SNR and interference quotient for underlay cognitive networks. In 2012 IEEE International Conference on Communications, ICC 2012. 2012. p. 4176-4180. 6364463 https://doi.org/10.1109/ICC.2012.6364463
Hussain, Syed Imtiaz ; Abdallah, Mohamed ; Alouini, Mohamed Slim ; Hasna, Mazen ; Qaraqe, Khalid. / Best relay selection using SNR and interference quotient for underlay cognitive networks. 2012 IEEE International Conference on Communications, ICC 2012. 2012. pp. 4176-4180
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