Some physical layer issues of wide-band cognitive radio systems

Author

Tang, Haiyun

Author_Institution

ADAPTRUM Inc., Mountain, View, CA

fYear

2005

fDate

8-11 Nov. 2005

Firstpage

151

Lastpage

159

Abstract

Recent study by FCC spectrum policy task force (SPTF) found that while the available spectrum becomes increasingly scarce, the assigned spectrum is significantly underutilized. Cognitive radio technology holds the key promise to solve such problems. In this paper, we investigate some physical layer issues of wide-band cognitive radio systems. Specifically, we discuss the physical layer signal structure to support flexible operations required by wide-band cognitive radios. We analyze the performances of generalized power sensing and waveform sensing. And we study the adjacent channel interference mechanisms focusing on the interference caused by time-domain signal truncation

Keywords

adjacent channel interference; broadband networks; frequency allocation; software radio; time-domain analysis; waveform analysis; FCC; Federal Communications Commission; SPTF; adjacent channel interference; power sensing; spectrum policy task force; time-domain signal truncation; waveform sensing; wide-band cognitive radio; Cognitive radio; FCC; Frequency; Interchannel interference; OFDM modulation; Performance analysis; Physical layer; RF signals; Signal processing; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005. 2005 First IEEE International Symposium on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-4244-0013-9

Type

conf

DOI

10.1109/DYSPAN.2005.1542630

Filename

1542630