This study investigates how frequency offsets of multitone jamming affect the fast frequencyhopped binary frequency shift keying （FFH/BFSK） self-normalizing （SNZ） receiver under additive white Gaussian noise （AWG...This study investigates how frequency offsets of multitone jamming affect the fast frequencyhopped binary frequency shift keying （FFH/BFSK） self-normalizing （SNZ） receiver under additive white Gaussian noise （AWGN）. The average bit-error-rate （BER） expressions of the FFH/BFSK SNZ receiver and the average BER expressions of an FFH/BFSK spread-spectrum （SS） communication system with frequency offsets of multitone jamming for the sake of understanding the simulation results better. Simulation results show that BER performance of the FFH/BFSK SNZ receiver with diversity under the worst case multitone jamming （MTJ） and AWGN suffers from multitone jamming＇s frequency offsets when the jamming power is moderate, which is validated by several simulations with different frequency offsets configured in multitone jamming. Therefore, an FFH/BFSK SNZ receiver under multitone jamming can be combated with the help of frequency offsets of multitone jamming.展开更多
提出一种双自调谐二阶广义积分器锁频环(frequency-locked loop based on double self-tuning second ordergeneralized integrator,DSSOGI-FLL)同步方法,该方法将自调谐滤波器(self-tuning filter)与优化的SOGI两种结构相级联,构成一...提出一种双自调谐二阶广义积分器锁频环(frequency-locked loop based on double self-tuning second ordergeneralized integrator,DSSOGI-FLL)同步方法,该方法将自调谐滤波器(self-tuning filter)与优化的SOGI两种结构相级联,构成一种双自调谐二阶广义积分器(self-tuning second order generalized integrator,SSOGI),该结构具有较SOGI更佳的滤波能力;同时,通过引入求差节点和一阶高通滤波器,使其具备了消除直流分量的能力;最后,应用幅值归一化算法对锁频环(FLL)结构进行参数设计,达到易于数字化实现的效果。仿真与实验结果验证文中所提DSSOGI-FLL方法的可行性与有效性。展开更多
基金supported by the National Natural Science Foundation of China under Grant No. 60502010the National Basic Research Program of China under Grant No. A1420080150the Science Foundation of National Defense Key Laboratory under Grant No.9140C0204010703
文摘This study investigates how frequency offsets of multitone jamming affect the fast frequencyhopped binary frequency shift keying （FFH/BFSK） self-normalizing （SNZ） receiver under additive white Gaussian noise （AWGN）. The average bit-error-rate （BER） expressions of the FFH/BFSK SNZ receiver and the average BER expressions of an FFH/BFSK spread-spectrum （SS） communication system with frequency offsets of multitone jamming for the sake of understanding the simulation results better. Simulation results show that BER performance of the FFH/BFSK SNZ receiver with diversity under the worst case multitone jamming （MTJ） and AWGN suffers from multitone jamming＇s frequency offsets when the jamming power is moderate, which is validated by several simulations with different frequency offsets configured in multitone jamming. Therefore, an FFH/BFSK SNZ receiver under multitone jamming can be combated with the help of frequency offsets of multitone jamming.
文摘提出一种双自调谐二阶广义积分器锁频环(frequency-locked loop based on double self-tuning second ordergeneralized integrator,DSSOGI-FLL)同步方法,该方法将自调谐滤波器(self-tuning filter)与优化的SOGI两种结构相级联,构成一种双自调谐二阶广义积分器(self-tuning second order generalized integrator,SSOGI),该结构具有较SOGI更佳的滤波能力;同时,通过引入求差节点和一阶高通滤波器,使其具备了消除直流分量的能力;最后,应用幅值归一化算法对锁频环(FLL)结构进行参数设计,达到易于数字化实现的效果。仿真与实验结果验证文中所提DSSOGI-FLL方法的可行性与有效性。
