Name
Title | ||
|---|---|---|
Directional spectrum sensing for cognitive radio using ESPAR arrays with a single RF chain |
Abstract | ||
|---|---|---|
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. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/EuCNC.2014.6882639 | EuCNC |
Keywords | Field | DocType |
single rf chain,multiple signal classification algorithm,generalized likelihood ratio test algorithm,time division basis,directional spectrum sensing,direction of arrival,rf front end,signal measurements,cognitive radio,parasitic elements,doa estimation performance,uniform linear array,electronically steerable parasitic array radiator antenna,radio spectrum management,directional beam-patterns,music algorithm,espar,espar arrays,direction-of-arrival estimation,signal classification,steer beams,glrt,snr,directional measurements,spectrum sensing,signal detection,primary user signals,single radio frequency front end,signal-to-noise ratio,linear antenna arrays,noise,multiple signal classification,signal to noise ratio,sensors | Front and back ends,Radiator (engine cooling),Telecommunications,Multiple signal classification,Likelihood-ratio test,Direction of arrival,Computer science,Radio frequency,Acoustics,Cognitive radio | Conference |
Citations | PageRank | References |
4 | 0.47 | 7 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rongrong Qian | 1 | 49 | 13.30 |
| Mathini Sellathurai | 2 | 483 | 57.03 |
| Tharmalingam Ratnarajah | 3 | 1035 | 104.27 |