Exploiting spatial dimension in cognitive radios and networks

Heli Sarvanko, Marko Höyhtyä, Marja Matinmikko, Aarne Mämmelä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

7 Citations (Scopus)

Abstract

This paper studies the maximum number of users that can be allocated in the same frequency band in case of using beamforming in a transmitter and a receiver by simulations. With the use of smart antennas the spectrum can be used efficiently, and at the same time the quality of service (QoS) of secondary users is increased in comparison with omnidirectional antennas. The results indicate that more users can transmit in the same area while fulfilling QoS constraints. The obtained results regarding spectrum sensing state that beamforming gives a great improvement in comparison with detection with omnidirectional antennas. Beamforming leads to power savings because the transmission power is sent to the wanted direction. In addition, directional antennas decrease the time needed for sensing and therefore more time for secondary transmission is left than with omnidirectional antennas.
Original languageEnglish
Title of host publication2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM)
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages360-364
ISBN (Electronic)978-1-936968-19-0, 978-1-936968-01-5
ISBN (Print)978-1-4577-0140-5
DOIs
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
Event6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM - Osaka, Japan
Duration: 1 Jun 20113 Jun 2011
Conference number: 6

Conference

Conference6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM
Abbreviated titleCROWNCOM
CountryJapan
CityOsaka
Period1/06/113/06/11

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Keywords

  • interference
  • adaptive antenna arrays
  • frequency allocation
  • array signal processing
  • sensors
  • spatial dimension exploitation

Cite this

Sarvanko, H., Höyhtyä, M., Matinmikko, M., & Mämmelä, A. (2011). Exploiting spatial dimension in cognitive radios and networks. In 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM) (pp. 360-364). IEEE Institute of Electrical and Electronic Engineers . https://doi.org/10.4108/icst.crowncom.2011.245907