低PAPR的OFDM干扰系统设计与调制单元的FPGA实现  

Design of OFDM jamming system of low PAPR and implementation of modulation unit

作　　者：徐志化 竺小松[1] 王庆胜[1] 

机构地区：[1]电子工程学院,安徽合肥230031

出　　处：《航天电子对抗》2015年第3期44-48,共5页Aerospace Electronic Warfare

摘　　要：较高峰均比(PAPR)的OFDM干扰信号,会严重影响OFDM干扰系统的输出功率。针对这一问题,提出了一种低PAPR的OFDM干扰系统的硬件实现方案,并用FPGA实现了系统的多载波调制单元。采用带通滤波器法生成带有相位信息的相位序列后,应用基于CORDIC的基-4FFT算法来实现对相位序列的多载波调制,可以在生成降低PAPR的OFDM干扰信号的同时减小运算量和硬件量。The output power of the jamming signal will be seriously affected by higher PAPR of the OFDM jamming signal. In order to solve this problem, a hardware implementation scheme of low PAPR of OFDM jamming system and the realized multicarrier modulation unit of this system by using FPGA are proposed. This scheme uses the band-pass filter to generate the phase sequence, and applies the radix-4FFT algorithm based on CORDIC algorithm to realize the multi-carrier modulation of the phase sequence. It can generate OFDM jamming signal of low PAPR and reduce the computational complexity and hardware.

关 键 词：峰均比(PAPR) OFDM CORDIC 

分 类 号：TN911.4[电子电信—通信与信息系统]