DocumentCode :
1942204
Title :
Modified Chirp Waveforms for Cognitive Ultra Wideband Radio - Work in Progress
Author :
Shen, Hanbing ; Zhang, Weihua ; Kwak, Kyung Sup
fYear :
2007
fDate :
1-3 Aug. 2007
Firstpage :
497
Lastpage :
501
Abstract :
Cognitive Radio (CR) is an intelligent wireless communication system which is aware of its environment and can adjust its spectrum to utilize the frequency holes in the wireless environment. By this way, a highly efficient utilization of the radio resource can be achieved. We propose a novel CR modulation method that is based on the Ultra-wideband (UWB) chirp waveform in this paper. Only time domain processing is required to utilize the free radio resources named by spectrum hole in the proposed system. Due to the avoidance of the frequency domain processing, system complexity and power consumption can be reduced by the proposed scheme. We discuss the design method of the proposed scheme and compare it with traditional CR schemes. In addition, we give out the system performance of the proposed scheme based on some interference scenarios by simulation. The simulation results express that the proposed scheme can utilize the spectrum hole efficiently.
Keywords :
Chirp modulation; Chromium; Cognitive radio; Design methodology; Energy consumption; Frequency domain analysis; Intelligent systems; System performance; Ultra wideband technology; Wireless communication; chirp waveform; cognitive radio (CR); notch filter; spectrum hole; transform-domain communication system (TDCS); ultra-wideband (UWB);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Cognitive Radio Oriented Wireless Networks and Communications, 2007. CrownCom 2007. 2nd International Conference on
Conference_Location :
Orlando, FL, USA
Print_ISBN :
978-1-4244-0814-6
Electronic_ISBN :
978-1-4244-0815-3
Type :
conf
DOI :
10.1109/CROWNCOM.2007.4549848
Filename :
4549848
Link To Document :
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