A Novel MLT-based ETF-OFDM System for Anti-Jamming Communications  

作　　者：SHANG Yong FENG Xiaotao 

机构地区：[1]School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China

出　　处：《Chinese Journal of Electronics》2011年第4期719-724,共6页电子学报（英文版）

摘　　要：Previous research has shown that the Expanded time-frequency OFDM （ETF-OFDM） system has good performance in anti-jamming communication. In this paper, a novel Lapped transform-based ETF- OFDM system is proposed with respect to the wide- band anti-jamming communication. The OFDM modu- lation/demodulation of the proposed system are accom- plished by using Inverse modulated lapped transform （IMLT）/Modulated lapped transform （MLT） instead of In- verse discrete Fourier transform （IDFT）/Discrete Fourier transform （DFT）, respectively. Compared to DFT, the basis functions of MLT have better stop-band attenuation. Benefit from this, the new system could achieve better anti-jamming performance than the ETF-OFDM system based on DFT in both without/with frequency schedule case. Simulation results show that the proposed system has better spectrum utilization and more robust anti-jamming performance than the conventional DFT-based system.

关 键 词：Expanded time and frequency （ETF） Orthogonal frequency division multiplexing （OFDM） Modulated lapped transform （MLT） Anti-jamming. 

分 类 号：TN929.5[电子电信—通信与信息系统] TN975[电子电信—信息与通信工程]