Interference temperature estimation in OFDM based on the directions of arrival sources

  • Authors:

  • Wei Ma;Mu Qing Wu;Chun Xiu Xu;Li Yang

  • Affiliations:

  • School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing, China;Second Artillery Command college, Wuhan, China;Second Artillery Command college, Wuhan, China

  • Venue:
  • WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
  • Year:
  • 2009

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Abstract

Cognitve 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 withou causing interference to primary users, interference temperature esstimation 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.