Deepen spectrum notch of CR signals with Partial Response System

Author

Liang, Bing ; Zhang, Luyong ; Zhou, Zheng

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

22-24 June 2009

Firstpage

1

Lastpage

5

Abstract

Partial response system (PRS) is introduced to OFDM technology to deepen spectrum notch when some subcarriers are turned off. By this, controllable interference which can be removed in the receiver without enhancing system complexity, is introduced to the cognitive radio (CR) signals. It can change spectrum shape of subcarriers of OFDM signals and deepen the spectrum notch when turning off some subcarriers. Therefore, this method can lower the interference between primary users and secondary ones in CR systems. Some simulation results are shown in this paper to approve the performance of this method.

Keywords

OFDM modulation; cognitive radio; interference suppression; spectral analysis; CR signals; OFDM technology; cognitive radio; deepen spectrum notch; interference suppression; partial response system; Bandwidth; Chromium; Cognitive radio; Interference; OFDM modulation; Protection; Transmitters; Turning; Wireless communication; Wireless networks; Cognitive Radio; OFDM; Partial Response System; Spectrum notch;

fLanguage

English

Publisher

ieee

Conference_Titel

Cognitive Radio Oriented Wireless Networks and Communications, 2009. CROWNCOM '09. 4th International Conference on

Conference_Location

Hannover

Print_ISBN

978-1-4244-3423-7

Electronic_ISBN

978-1-4244-3424-4

Type

conf

DOI

10.1109/CROWNCOM.2009.5188965

Filename

5188965