Title :
Interference Temperature Estimation in OFDM Based on the Directions of Arrival Sources
Author :
Ma, Wei ; Wu, Mu Qing ; Xu, Chun Xiu ; Yang, Li
Author_Institution :
Sch. of Inf. & Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Cognitive radio (CR) is one of the most effective techniques to improve the spectrum utilization efficiency. In order to detect the presence of the spectrum holes and utilize them efficiently without causing interference to primary users, interference temperature estimation is considered as the key functionality. In this paper, we proposed a new interference temperature estimation method in OFDM based on the detection directions of arrival (DOA) sources in every resource element (RE) band. The derivation and simulation result shows that our proposed scheme can heighten the channel utilization of CR users.
Keywords :
OFDM modulation; cognitive radio; direction-of-arrival estimation; radio spectrum management; OFDM; cognitive radio; direction-of-arrival sources; interference temperature estimation; resource element band; spectrum utilization efficiency; Bandwidth; Chromium; Cognitive radio; Detectors; Direction of arrival estimation; MIMO; OFDM; Radiofrequency interference; Temperature sensors; Transmitting antennas;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5304119
