A New Frequency Spectrum Sensing Approach based on Spatial Spectrum Estimation in OFDM system

作者：Li Guan Nan^*; Li Wei; Xue Song; Zhang Ning

来源：5th International Conference on Wireless Communications, Networking and Mobile Computing, China,Beijing, 2009-09-24 to 2009-09-26.

DOI：10.1109/wicom.2009.5302379

• spatial spectrum estimation
• sensing
• OFDM

This paper presents another look at the problem of frequency spectrum sensing based on energy detection in OFDM. OFDM is one of the most important techniques to improve the capacity of the channel in 3G and 4G. In order to detect the presence of the spectrum holes and utilize them efficiently withou causing interference to primary users in OFDM, spatial spectrum estiamtion is considered as the key functionality. In this paper, we proposed a new frequency spectrum estimation method in OFDM based on the detection directions of arrival (DOA) sources in every resource element (RE) band. The simulation result shows that our proposed scheme can heighten the channel utilization of CR users in OFDM.

• 出版日期2009
• 单位中国人民解放军国防科学技术大学