DocumentCode
3536409
Title
Energy-Efficient Power Allocation for OFDM-Based Cognitive Radio Systems with Imperfect Spectrum Sensing
Author
Pei, Errong ; Wang, Sheng ; Zhang, Zhizhong
Author_Institution
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fYear
2011
fDate
23-25 Sept. 2011
Firstpage
1
Lastpage
3
Abstract
Based on existing sensing technology, namely imperfect spectrum sensing, we study an energy efficient power allocation problem for OFDM-based cognitive radio systems, and its optimal solution is derived, and further an energy efficient power allocation scheme is proposed. The proposed scheme can not only save valuable resource such as battery life by selectively allocating power to underutilized sub carriers, but also fully make use of the limited spectrum resource.
Keywords
OFDM modulation; cognitive radio; OFDM; cognitive radio systems; energy-efficient power allocation problem; imperfect spectrum sensing; spectrum resource; Cognitive radio; Convex functions; Educational institutions; Interference; OFDM; Resource management; Sensors;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location
Wuhan
ISSN
2161-9646
Print_ISBN
978-1-4244-6250-6
Type
conf
DOI
10.1109/wicom.2011.6036682
Filename
6036682
Link To Document