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

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WICOM.2009.5304119

Filename

5304119