Open AccessFrequency Domain DTV Pilot Detection Based on the Bussgang Theorem for Cognitive Radio
Author(s) -
Hwang Sung Sue,
Park Dong Chan,
Kim Suk Chan
Publication year - 2013
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.13.0112.0556
Subject(s) - cognitive radio , computer science , gaussian noise , noise (video) , algorithm , additive white gaussian noise , channel (broadcasting) , wireless , signal (programming language) , electronic engineering , white noise , telecommunications , artificial intelligence , engineering , image (mathematics) , programming language
In this paper, a signal detection scheme for cognitive radio (CR) based on the Bussgang theorem is proposed. The proposed scheme calculates the statistical difference between Gaussian noise and the primary user signal by applying the Bussgang theorem to the received signal. Therefore, the proposed scheme overcomes the noise uncertainty and gives scalable complexity according to the zero‐memory nonlinear function for a mobile device. We also present the theoretical analysis on the detection threshold and the detection performance in the additive white Gaussian noise channel. The proposed detection scheme is evaluated by computer simulations based on the IEEE 802.22 standard for the wireless regional area network. Our results show that the proposed scheme is robust to the noise uncertainty and works well in a very low signal‐to‐noise ratio.