Paper Info
Title
Full-Duplex Spectrum Sensing Scheme Based on Phase Difference
Abstract
With recent breakthroughs in full-duplex radio, there is a growing trend to combine it with cognitive radio. Thus the topic of spectrum sensing in full-duplex scenario is addressed in this paper. Firstly, the concept of full-duplex spectrum sensing and its advantage over traditional half-duplex spectrum sensing are analyzed. Then a correlation based least square algorithm is formulated to cancel out self-interference, in which no preamble is required. We notice that the phase distribution of noise differs greatly from that of noise-perturbed signals. Therefore, a novel spectrum sensing scheme using phase difference as test statistics is introduced. Its theoretical performance is also analyzed by approximating the test statistics as Gaussian distribution. The proposed detector is simple and immune to noise uncertainty due to the independence of its threshold on noise power. Simulation results show that robust sensing performance can be achieved in full-duplex scenario using correlation based least square and the phase based sensing scheme.
Year
DOI
Venue
2014
10.1109/VTCFall.2014.6965991
VTC Fall
Keywords
Field
DocType
full-duplex radio,noise-perturbed signals,radiofrequency interference,noise,half-duplex spectrum sensing,cognitive radio,gaussian distribution,phase distribution,radio spectrum management,least mean squares methods,full-duplex spectrum sensing scheme,interference suppression,noise power,least square algorithm,phase difference
Noise floor,Computer science,Noise (electronics),Phase noise,Electronic engineering,Noise spectral density,Direct-sequence spread spectrum,Additive white Gaussian noise,Gaussian noise,Duplex (telecommunications)
Conference
Citations 
PageRank 
References 
1
0.34
7
Authors
7
Name
Order
Citations
PageRank
Jian Yang1103.04
Ying Zhu210.68
Ishtiaq Ahmad312019.02
Mingfei Gao432.10
Yifan Zhang53010.85
Zhiyong Feng6794167.21
Yuchi Zhang7204.60