Exploiting polarization for spectrum sensing in cognitive SatComs
2012 (English)In: Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012 7th International ICST Conference on, 2012, 36-41 p.Conference paper (Refereed)
Exploring new techniques for spectrum sensing (SS), which can detect the weak primary signals instantly, has been an important research challenge. In this paper, the problem of enhancing SS efficiency in cognitive SatComs has been considered. The analysis of different combining techniques has been carried out for SS using dual polarized antenna. Furthermore, polarization states of received signals are exploited and based on obtained polarization states, Optimum Polarization Based Combining (OPBC) technique has been used for carrying out SS in the satellite terminal. The sensing performance of OPBC technique has been compared to selection combining (SC), equal gain combining (EGC) and maximum ratio combining (MRC) techniques. The simulation results show that OPBC technique achieves a great improvement in sensing efficiency over other considered techniques at the expense of complexity in a dual polarized AWGN channel.
Place, publisher, year, edition, pages
2012. 36-41 p.
Probability of detection, sensing efficiency, energy detection, dual polarized antenna, polarization states
IdentifiersURN: urn:nbn:se:kth:diva-120193DOI: 10.4108/icst.crowncom.2012.248473ISI: 000310377900007OAI: oai:DiVA.org:kth-120193DiVA: diva2:613779
Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2012 7th International ICST Conference on
QC 201305212013-04-022013-04-022013-05-21Bibliographically approved