An Adaptive Interference-Avoiding System for DS-UWB Cognitive Radio

Author

Yang, Rumin ; Zhou, Zheng

Author_Institution

Lab. of Wireless Network, Beijing Univ. of Posts & Telecommun.

fYear

2006

fDate

25-27 Oct. 2006

Firstpage

1

Lastpage

5

Abstract

This paper addresses the problem of interfering with narrowband licensed users caused by DS-UWB systems. Deducting the colliding frequency band from UWB spectrum, and then employing orthonormal expansion by Hermite-Gaussian functions, the paper develops a low-complexity algorithm for generating DS-UWB signals that adaptively avoid or recover arbitrary colliding bands. A system implementing this algorithm is suggested. Performance comparison with matured seventh Gaussian derivative shows that our system achieves about 1.5 dB signal-to-noise gain and 52.2 dB signal-to-interference gain over the referenced system in AWGN environment

Keywords

Gaussian processes; cognitive radio; radiofrequency interference; spread spectrum communication; ultra wideband communication; AWGN environment; DS-UWB cognitive radio; Hermite-Gaussian functions; adaptive interference-avoiding system; colliding frequency band; narrowband licensed users; signal-to-interference gain; signal-to-noise gain; AWGN; Adaptive systems; Cognitive radio; FCC; Frequency; Interference; Narrowband; Performance gain; Sampling methods; Wavelet domain; Cognitive radio; DS-UWB; Hermite-Gaussian functions; Soft defined radio;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Networking in China, 2006. ChinaCom '06. First International Conference on

Conference_Location

Beijing

Print_ISBN

1-4244-0463-0

Electronic_ISBN

1-4244-0463-0

Type

conf

DOI

10.1109/CHINACOM.2006.344820

Filename

4149785