Buffer-aided relay selection with inter-relay interference mitigation for successive multiple antennas relay systems

Mostafa Darabi, Mehrdad Ardebilipour, Behrouz Maham

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

2 Citations (Scopus)

Abstract

In this paper, we consider a cooperative network comprising of a source node, a destination node and M amplifyand- forward half-duplex relay nodes. Both the source and destination have one antenna and each relay is equipped with N antennas. There exists a buffer at each relay in order to store the incoming data packet and retransmit it to the destination later. At each time slot, simultaneous data transmission of the source and one of the relay results in inter-relay interference (IRI). We propose a novel buffer-aided relay selection scheme which mitigates the IRI with the aid of minimum variance (MV) beamforming and the relay buffers. More specifically, at each time slot, two relays are selected to receive data from the source and to transmit data to the destination provided that the associated source-to-destination signal-to-interference-plus-noise ratio (SINR) is maximized. By simulations, we investigate the performance of the proposed policy in terms of the throughput, delay, outage probability and SER (symbol error rate). It is shown that the proposed scheme suppresses the IRI efficiently, achieves higher throughput and lower outage probability compared to the other recently proposed successive relaying policies.

Original languageEnglish
Title of host publication2014 7th International Symposium on Telecommunications, IST 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1015-1019
Number of pages5
ISBN (Electronic)9781479953592
DOIs
Publication statusPublished - Dec 31 2014
Event2014 7th International Symposium on Telecommunications, IST 2014 - Tehran, Iran, Islamic Republic of
Duration: Sep 9 2014Sep 11 2014

Publication series

Name2014 7th International Symposium on Telecommunications, IST 2014

Other

Other2014 7th International Symposium on Telecommunications, IST 2014
CountryIran, Islamic Republic of
CityTehran
Period9/9/149/11/14

Keywords

  • Successive relaying
  • adaptive relay selection
  • buffer-aided relay channel
  • interference mitigation
  • minimum variance beamforming.

ASJC Scopus subject areas

  • Computer Networks and Communications

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