Physical layer considerations for wideband cognitive radio

Author

Goodman, Joel ; Miller, Benjamin A. ; Vian, James ; Bolstad, Andrew ; Kalyanam, Janani ; Herman, Matthew

Author_Institution

MIT Lincoln Lab., Lexington, MA, USA

fYear

2010

fDate

Oct. 31 2010-Nov. 3 2010

Firstpage

2113

Lastpage

2118

Abstract

Next generation cognitive radios will benefit from the capability of transmitting and receiving communications waveforms across many disjoint frequency channels spanning hundreds of megahertz of bandwidth. The information theoretic advantages of multi-channel operation for cognitive radio (CR), however, come at the expense of stringent linearity requirements on the analog transmit and receive hardware. This paper presents the quantitative advantages of multi-channel operation for next generation CR, and the advanced digital compensation algorithms to mitigate transmit and receive nonlinearities that enable broadband multi-channel operation. Laboratory measurements of the improvement in the performance of a multi-channel CR communications system operating below 2 GHz in over 500 MHz of instantaneous bandwidth are presented.

Keywords

broadband networks; cognitive radio; information theory; next generation networks; advanced digital compensation algorithm; broadband multichannel operation; communications waveform; information theoretic advantages; next generation cognitive radio; physical layer consideration; wideband cognitive radio; Bandwidth; Computer architecture; Kernel; Nonlinear distortion; Polynomials; Radio transmitters; Receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

MILITARY COMMUNICATIONS CONFERENCE, 2010 - MILCOM 2010

Conference_Location

San Jose, CA

ISSN

2155-7578

Print_ISBN

978-1-4244-8178-1

Type

conf

DOI

10.1109/MILCOM.2010.5680477

Filename

5680477