Distributed interference cancellation for dynamic spectrum sharing

Kentaro Nishimori, Hiroyuki Yomo, Petar Popovski, Yasushi Takatori, Ramjee Prasad, Shuji Kubota

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

3 Citations (Scopus)

Abstract

This paper proposes a novel interference cancellation technique using the concept of a distributed array, for the secondary use of the frequency resources in frequency division duplexing (FDD)-based cellular systems. In order to achieve efficient distributed interference cancellation, the secondary system exploit intervals for periodic training signals transmitted by FDD-time division multiple access (TDMA)-based cellular systems. We show that an efficient interference cancellation can be achieved by introducing helpers that decode the interference and transfer it to the secondary nodes. We take advantage of the high-speed links within the secondary system and devise a data compressing scheme that reduces time for transferring the decoded interference. We clarify the effectiveness of the proposed scheme by using computer simulation. As a parameter, the transmission quality between the helper and secondary nodes is varied. The results indicate that the proposed distributed interference cancellation is effective compared to a conventional adaptive array using a zero forcing algorithm, when the signal to noise ratio between the helper and the target secondary node is greater than 20 dB.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages3044-3049
Number of pages6
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2008 - Beijing
Duration: 2008 May 192008 May 23

Other

OtherIEEE International Conference on Communications, ICC 2008
CityBeijing
Period08/5/1908/5/23

Fingerprint

Time division multiple access
Signal to noise ratio
Computer simulation

Keywords

  • Distributed array
  • FDD systems
  • Interference information transfer
  • Periodic tracing signal
  • Secondary spectrum usage

ASJC Scopus subject areas

  • Media Technology

Cite this

Nishimori, K., Yomo, H., Popovski, P., Takatori, Y., Prasad, R., & Kubota, S. (2008). Distributed interference cancellation for dynamic spectrum sharing. In IEEE International Conference on Communications (pp. 3044-3049). [4533609] https://doi.org/10.1109/ICC.2008.573

Distributed interference cancellation for dynamic spectrum sharing. / Nishimori, Kentaro; Yomo, Hiroyuki; Popovski, Petar; Takatori, Yasushi; Prasad, Ramjee; Kubota, Shuji.

IEEE International Conference on Communications. 2008. p. 3044-3049 4533609.

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

Nishimori, K, Yomo, H, Popovski, P, Takatori, Y, Prasad, R & Kubota, S 2008, Distributed interference cancellation for dynamic spectrum sharing. in IEEE International Conference on Communications., 4533609, pp. 3044-3049, IEEE International Conference on Communications, ICC 2008, Beijing, 08/5/19. https://doi.org/10.1109/ICC.2008.573
Nishimori K, Yomo H, Popovski P, Takatori Y, Prasad R, Kubota S. Distributed interference cancellation for dynamic spectrum sharing. In IEEE International Conference on Communications. 2008. p. 3044-3049. 4533609 https://doi.org/10.1109/ICC.2008.573
Nishimori, Kentaro ; Yomo, Hiroyuki ; Popovski, Petar ; Takatori, Yasushi ; Prasad, Ramjee ; Kubota, Shuji. / Distributed interference cancellation for dynamic spectrum sharing. IEEE International Conference on Communications. 2008. pp. 3044-3049
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