Propagation based spectrum sensing: A novel beamforming detection method

Jonathan S. Lu, I. Tai Lu

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

Abstract

This paper proposes a novel propagation based spectrum sensing method that utilizes beamforming for systems equipped with antenna arrays. Since rays are known to arrive in clusters, the arrival angles of the dominant ray clusters can be exploited to improve the spectral sensing performances. Moreover, from site-specific propagation characteristics, the dominant ray angles can be predicted without additional computational efforts in most practical environments. Numerical results based on ray-based channel models show that the proposed beamforming detection method (with or without dominant ray angle prediction) is superior to the conventional energy detection method. Numerical results also show that decreasing the angle spread, enhances the performance of the proposed method. The computational complexity and latency of the proposed method is the same as the conventional energy detection method when using dominant ray angle prediction, but increases slightly without prediction.

Original languageEnglish (US)
Title of host publicationProceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011
Pages11-15
Number of pages5
DOIs
StatePublished - 2011
Event2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011 - Osaka, Japan
Duration: Jun 1 2011Jun 3 2011

Publication series

NameProceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011

Other

Other2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011
CountryJapan
CityOsaka
Period6/1/116/3/11

Keywords

  • Angle of Arrival
  • Beamforming
  • Cognitive Radio
  • Dominant Ray
  • Propagation Site-specific
  • Spectrum Sensing

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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