Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks

Dawoon Lee, Sooyong Choi

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

4 Citations (Scopus)

Abstract

This paper considers a single relay selection problem in a cooperative network with multiple source-destination and multiple relay nodes. The relay selection considers the channel gain as well as the interferences in case of sharing the resources. Although the optimal relay selection can be obtained by the exhaustive search, it is not practical because of its significant computational complexity. Therefore, this paper proposes a low-complexity relay selection method which considers all interferences which occur in the multi-source multi-destination cooperative network. We derive the simplified relay selection metric from the optimal relay selection problem. Then, we perform the relay selection based on the simplified relay selection metric using the weighted bipartite graph model. The proposed method outperforms the conventional method used in the single source single destination scenario, and previously proposed, modified best-worst method in [7], in terms of average overall rate. Especially, the proposed method provides more performance gain when the source-relay interference is dominant, such that the relay is close to the source node.

Original languageEnglish
Title of host publication6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings
DOIs
Publication statusPublished - 2012 Dec 1
Event6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Gold Coast, QLD, Australia
Duration: 2012 Dec 122012 Dec 14

Other

Other6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012
CountryAustralia
CityGold Coast, QLD
Period12/12/1212/12/14

Fingerprint

Computational complexity

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing

Cite this

Lee, D., & Choi, S. (2012). Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks. In 6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings [6507942] https://doi.org/10.1109/ICSPCS.2012.6507942
Lee, Dawoon ; Choi, Sooyong. / Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks. 6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings. 2012.
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Lee, D & Choi, S 2012, Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks. in 6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings., 6507942, 6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012, Gold Coast, QLD, Australia, 12/12/12. https://doi.org/10.1109/ICSPCS.2012.6507942

Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks. / Lee, Dawoon; Choi, Sooyong.

6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings. 2012. 6507942.

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

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N2 - This paper considers a single relay selection problem in a cooperative network with multiple source-destination and multiple relay nodes. The relay selection considers the channel gain as well as the interferences in case of sharing the resources. Although the optimal relay selection can be obtained by the exhaustive search, it is not practical because of its significant computational complexity. Therefore, this paper proposes a low-complexity relay selection method which considers all interferences which occur in the multi-source multi-destination cooperative network. We derive the simplified relay selection metric from the optimal relay selection problem. Then, we perform the relay selection based on the simplified relay selection metric using the weighted bipartite graph model. The proposed method outperforms the conventional method used in the single source single destination scenario, and previously proposed, modified best-worst method in [7], in terms of average overall rate. Especially, the proposed method provides more performance gain when the source-relay interference is dominant, such that the relay is close to the source node.

AB - This paper considers a single relay selection problem in a cooperative network with multiple source-destination and multiple relay nodes. The relay selection considers the channel gain as well as the interferences in case of sharing the resources. Although the optimal relay selection can be obtained by the exhaustive search, it is not practical because of its significant computational complexity. Therefore, this paper proposes a low-complexity relay selection method which considers all interferences which occur in the multi-source multi-destination cooperative network. We derive the simplified relay selection metric from the optimal relay selection problem. Then, we perform the relay selection based on the simplified relay selection metric using the weighted bipartite graph model. The proposed method outperforms the conventional method used in the single source single destination scenario, and previously proposed, modified best-worst method in [7], in terms of average overall rate. Especially, the proposed method provides more performance gain when the source-relay interference is dominant, such that the relay is close to the source node.

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Lee D, Choi S. Low-complexity interference-aware single relay selection in multi-source multi-destination cooperative networks. In 6th International Conference on Signal Processing and Communication Systems, ICSPCS 2012 - Proceedings. 2012. 6507942 https://doi.org/10.1109/ICSPCS.2012.6507942