摘要
对软件无线电感应电台中π/ 4DQPSK信号调制过程的内插和成形部分进行了分析和仿真 ,通过对成形滤波器的软件结构的设计和优化 ,使调制信号频谱的带外衰减加快 ,从而使频带利用率有所提高。
In this paper,the interpolation and pulse shaping used in the software induction communication implementation with the π/4DQPSK modulation are simulated and analyzed.Withe the filter based on software,outband frequency fades quickly,which makes the frequency band used efficiently.
出处
《南京邮电学院学报（自然科学版）》
2002年第2期1-5,10,共6页
Journal of Nanjing University of Posts and Telecommunications
基金
铁道部科研基金资助项目 ( 2 0 0 0协 0 1)
