Signal modeling of the OFDM-based fractional fourier domain communication system  

作　　者：迟永刚 张生昱 

机构地区：[1]Communication Research Center,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2012年第3期10-14,共5页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the Natural Science Foundation of Heilongjiang Province of China(Grant No. F200906)

摘　　要：In this paper,a new transmission scheme for Fractional Fourier Domain Transform Communication System(FrFDCS) based on OFDM is proposed,which can be potentially applied in transmitting control information in the cognitive radio(CR) network.The proposed system can take advantage of concentration property of non-stationary signals in fractional domain to obtain a better performance against Chirp like jammers.Meanwhile,Chirp format subcarriers of fractional domain OFDM can solve the orthogonality degradation in the traditional OFDM system,when it comes to the time-frequency-selective channel.The signal model is designed for the OFDM-based FrFDCS and the BER performance in the AWGN channel is analyzed and simulated as well.In this paper, a new transmission scheme for Fractional Fourier Domain Transform Communication System （FrFDCS） based on OFDM is proposed, which can be potentially applied in transmitting control infor- mation in the cognitive radio （CR） network. The proposed system can take advantage of concentration property of non-stationary signals in fractional domain to obtain a better performance against Chirp like jammers. Mean- while, Chirp format subcarriers of fractional domain OFDM can solve the orthogonality degradation in the tradi- tional OFDM system, when it comes to the time-frequency-selective channel. The signal model is designed for the OFDM-based FrFDCS and the BER performance in the AWGN channel is analyzed and simulated as well.

关 键 词：cognitive radio OFDM TDCS FrFDCS 

分 类 号：TN929.5[电子电信—通信与信息系统]