A Dynamic Power Limit Based on Measures of Brightness in CR-UWB

Author

Wang, Shubin ; Zhou, Zheng ; Kwak, Kyungsup

Author_Institution

Coll. of Electron. Inf. Eng., Inner Mongolia Univ., Hohhot, China

fYear

2009

fDate

16-18 Dec. 2009

Firstpage

417

Lastpage

421

Abstract

For cognitive radio combining ultra wideband (CR-UWB), if there are not any spectrum holes for a current radio environment, the power of CR-UWB must be limited not to interfere the primary user (PU). The interference temperature of radio environment is an equivalent temperature, and can not be measured in practice, so a dynamic power limit based on measures of brightness of radio environment is presented in this paper. Depended on an interference temperature constraint and cognitive function of CR-UWB, the dynamic power limit of CR-UWB can be obtained by a self-regulating emission mode, a two-dimensional working scenario depended on the distance measure and location is given, some numerical values of the dynamic power limit can be gained through computer simulation.

Keywords

brightness; cognitive radio; ultra wideband communication; CR-UWB; brightness measurement; cognitive radio combining ultra wideband; computer simulation; dynamic power limit; interference temperature; primary user; self-regulating emission mode; Brightness; Cognitive radio; FCC; Frequency; Interference; Mathematical model; Power measurement; Temperature dependence; Ultra wideband technology; Working environment noise; Brightness measuring; Cognitive radio; Dynamic power limit; Ultra wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Multimedia Technology, 2009. ICIMT '09. International Conference on

Conference_Location

Jeju Island

Print_ISBN

978-0-7695-3922-5

Type

conf

DOI

10.1109/ICIMT.2009.38

Filename

5381171