Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions

Kentaro Nishimori, Rocco Di Taranto, Hiroyuki Yomo, Petar Popovski, Yasushi Takatorit, Ramjee Prasad, Shuji Kubota

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

27 Citations (Scopus)

Abstract

In this paper, the possibility for a short-range cognitive radio (secondary communication system) to be located within the service area of the primary system is discussed. Although the secondary system interferes with the primary system, there can be certain locations in the service area of the primary system where the cognitive radio can reuse the frequency of the primary system without disturbing it or being disturbed by the primary system. We say that in those locations there is a spatial opportunity for communication in the secondary system. The primary and secondary systems have different features and usage scenarios, which result in different deployment conditions. This gives rise to differences between the path loss for a link in the primary system and the path loss for the interference from the primary to secondary systems. This paper investigates the impact of the heterogeneous path loss conditions on the spatial opportunity for the secondary system. Our approach can be applied as a general way to investigate the coexistence among multiple systems. We clarify that the change of the path loss coefficient due to the different antenna heights of the primary and secondary systems can largely affect the spatial opportunity for frequency reuse by the cognitive radios.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Pages2631-2635
Number of pages5
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin
Duration: 2007 Apr 222007 Apr 25

Other

Other2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
CityDublin
Period07/4/2207/4/25

Fingerprint

Radio systems
Cognitive radio
Communication systems
Antennas
Communication

Keywords

  • Antenna height
  • Cognitive radio
  • Directional antenna
  • Heterogenous propagation path loss conditions
  • Reusable area

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Nishimori, K., Taranto, R. D., Yomo, H., Popovski, P., Takatorit, Y., Prasad, R., & Kubota, S. (2007). Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions. In IEEE Vehicular Technology Conference (pp. 2631-2635). [4212969] https://doi.org/10.1109/VETECS.2007.541

Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions. / Nishimori, Kentaro; Taranto, Rocco Di; Yomo, Hiroyuki; Popovski, Petar; Takatorit, Yasushi; Prasad, Ramjee; Kubota, Shuji.

IEEE Vehicular Technology Conference. 2007. p. 2631-2635 4212969.

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

Nishimori, K, Taranto, RD, Yomo, H, Popovski, P, Takatorit, Y, Prasad, R & Kubota, S 2007, Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions. in IEEE Vehicular Technology Conference., 4212969, pp. 2631-2635, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, Dublin, 07/4/22. https://doi.org/10.1109/VETECS.2007.541
Nishimori K, Taranto RD, Yomo H, Popovski P, Takatorit Y, Prasad R et al. Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions. In IEEE Vehicular Technology Conference. 2007. p. 2631-2635. 4212969 https://doi.org/10.1109/VETECS.2007.541
Nishimori, Kentaro ; Taranto, Rocco Di ; Yomo, Hiroyuki ; Popovski, Petar ; Takatorit, Yasushi ; Prasad, Ramjee ; Kubota, Shuji. / Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions. IEEE Vehicular Technology Conference. 2007. pp. 2631-2635
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