Research Article
Reconfigurable Antenna Based DoA Estimation and Localization in Cognitive Radios: Low Complexity Algorithms and Practical Measurements
@INPROCEEDINGS{10.4108/icst.crowncom.2014.255730, author={Aki Hakkarainen and Janis Werner and Nikhil Gulati and Damiano Patron and Doug Pfeil and Henna Paaso and Aarne Mammela and Kapil Dandekar and Mikko Valkama}, title={Reconfigurable Antenna Based DoA Estimation and Localization in Cognitive Radios: Low Complexity Algorithms and Practical Measurements}, proceedings={9th International Conference on Cognitive Radio Oriented Wireless Networks}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2014}, month={7}, keywords={cognitive radio direction-of-arrival estimation leaky-wave antennas localization low complexity measurements reconfigurable antennas stansfield algorithm}, doi={10.4108/icst.crowncom.2014.255730} }- Aki Hakkarainen
Janis Werner
Nikhil Gulati
Damiano Patron
Doug Pfeil
Henna Paaso
Aarne Mammela
Kapil Dandekar
Mikko Valkama
Year: 2014
Reconfigurable Antenna Based DoA Estimation and Localization in Cognitive Radios: Low Complexity Algorithms and Practical Measurements
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2014.255730
Abstract
This paper addresses low-complexity algorithms and evaluates the practical performance of low-complexity primary user (PU) direction of arrival (DoA) estimation and PU localization with real world indoor measurement data. More specifically, we use a type of reconfigurable antenna known as leaky-wave antennas to sense the spatial distribution of the PU signal power. By deploying a very low-complexity algorithm, called MaxE, the secondary user (SU) sensors are then able to estimate their respective PU DoAs. Finally, a central fusion center combines the DoAs into a PU location estimate. The results of the practical measurements reveal that it is possible to implement a localization system with very low complexity and fairly good PU location capabilities in a cognitive radio network. Such PU localization capabilities can then be used, e.g. for enhanced PU interference management.
