Abstract / Description of output
In this paper, we propose to use the electronically steerable parasitic array radiator (ESPAR) antenna, which relies on a single radio frequency (RF) front end coupled with a number of parasitic elements to steer beams in prescribed directions in the angular domain on a time division basis, to identify the directional spectrum sensing opportunities for cognitive radios. In particular, we propose a two stage spectrum sensing: First ESPAR signal measurements from different directional beampatterns are fed as input to the generalized likelihood ratio test (GLRT) algorithm to detect the existence of primary user signals. If signal existence is detected by the GLRT, then the directional measurements are used to obtain the direction of arrival (DoA) using a multiple signal classification (MUSIC) algorithm. We show that the DoA estimation performance using the ESPAR is comparable to that of the traditional uniform linear array when the signal-to-noise ratio (SNR) is larger than-15dB.
Original language | English |
---|---|
Title of host publication | EuCNC 2014 - European Conference on Networks and Communications |
Publisher | Institute of Electrical and Electronics Engineers |
ISBN (Print) | 9781479952809 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | 2014 European Conference on Networks and Communications, EuCNC 2014 - Bologna, United Kingdom Duration: 23 Jun 2014 → 26 Jun 2014 |
Conference
Conference | 2014 European Conference on Networks and Communications, EuCNC 2014 |
---|---|
Country/Territory | United Kingdom |
City | Bologna |
Period | 23/06/14 → 26/06/14 |
Keywords / Materials (for Non-textual outputs)
- Cognitive radio
- ESPAR
- spectrum sensing