Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks

Mostafa Darabi, Behrouz Maham, Walid Saad, Xiangyun Zhou

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

1 Citation (Scopus)

Abstract

In this paper, we consider a cooperative underlay cognitive radio network in which the primary network (PN) consists of a transmitter and receiver and the secondary network (SN) has K bidirectional half-duplex relays. In the SN, two secondary transceivers adopt multiple access broadcast protocol for the secondary data transmission and at each bidirectional relay, there exist two buffers of size L data elements. Hence, each relay can store the incoming secondary data and retransmit it in an appropriate time slot later. We propose a novel buffer-aided bidirectional relay selection policy with secondary power minimization and successive interference cancellation in which the interference between the PN and SN is eliminated. Since buffers are used at the relays, data transmission in the SN is not limited to a predefined schedule. Hence, at each time slot, based on the instantaneous buffer state information of the relays and the instantaneous or statistical channel state information of the involved links, the SN makes a decision. The SN decides optimally when to use one of the relays for the multiple access, use one of the relays for the broadcast mode or be silent provided that the data transmission in both the PN and SN are error free and the secondary power expenditure is minimized. Simulation results show that the proposed scheme minimizes the secondary power expenditure, and achieves up to 40% improvement in the secondary throughput for 6 middle relays compared to the other recently proposed policies without buffer.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages7683-7688
Number of pages6
Volume2015-September
ISBN (Print)9781467364324
DOIs
Publication statusPublished - Sep 9 2015
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2015 - London, United Kingdom
Duration: Jun 8 2015Jun 12 2015

Other

OtherIEEE International Conference on Communications, ICC 2015
CountryUnited Kingdom
CityLondon
Period6/8/156/12/15

Fingerprint

Cognitive radio
Data communication systems
Telecommunication repeaters
Channel state information
Transceivers
Transmitters
Throughput

Keywords

  • adaptive relay selection
  • Buffer-aided two-way relay network
  • cognitive radio network
  • power minimization
  • successive interference cancellation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Darabi, M., Maham, B., Saad, W., & Zhou, X. (2015). Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks. In IEEE International Conference on Communications (Vol. 2015-September, pp. 7683-7688). [7249555] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2015.7249555

Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks. / Darabi, Mostafa; Maham, Behrouz; Saad, Walid; Zhou, Xiangyun.

IEEE International Conference on Communications. Vol. 2015-September Institute of Electrical and Electronics Engineers Inc., 2015. p. 7683-7688 7249555.

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

Darabi, M, Maham, B, Saad, W & Zhou, X 2015, Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks. in IEEE International Conference on Communications. vol. 2015-September, 7249555, Institute of Electrical and Electronics Engineers Inc., pp. 7683-7688, IEEE International Conference on Communications, ICC 2015, London, United Kingdom, 6/8/15. https://doi.org/10.1109/ICC.2015.7249555
Darabi M, Maham B, Saad W, Zhou X. Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks. In IEEE International Conference on Communications. Vol. 2015-September. Institute of Electrical and Electronics Engineers Inc. 2015. p. 7683-7688. 7249555 https://doi.org/10.1109/ICC.2015.7249555
Darabi, Mostafa ; Maham, Behrouz ; Saad, Walid ; Zhou, Xiangyun. / Buffer-aided relay selection and secondary power minimization for two-way cognitive radio networks. IEEE International Conference on Communications. Vol. 2015-September Institute of Electrical and Electronics Engineers Inc., 2015. pp. 7683-7688
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