cosine pulse

Implementation of Raised-Cosine Roll-Off Pulse Shaping Interpolated Filter Based on FPGA

升余弦滚降基带成型内插滤波器的FPGA实现

Familiar UWB pulses are introduced firstly, including Gaussian pulse, rise cosine pulse, etc.

首先研究了传统的超宽带脉冲的特性, 包括高斯脉冲 、 升余弦脉冲等.

The Generation of Cosine Pulse Signal with Four Phase Codes

余弦脉冲四相码信号及其产生

It is found that selecting appropriate value of duty cycles of Gauss light pulse signal, frequency chirp and the roll-off factor of raised cosine pulse signal produced by the equalizer of an optical receiver can improve the sensitivity of the optical receiver.

发现适当选取高斯光脉冲信号的占空比、啁啾分量、光接收机均衡滤波器输出的升余弦频谱波形滚降因子的值可以提高光接收机灵敏度；

Simulation results show that compare to the rise cosine pulse, with the narrow main valve and the faster high frequency rolling and the better resisting of spectral spreading, the new type IJF code has better performance.

仿真结果表明：与传统的升余弦脉冲比较，新设计的IJF码型性能更加优越，表现为主瓣窄，高频滚降快，有效地抑制了频谱扩展。

The software ANSYS/ LY-DYNA has been employed to analyze transient dynamic response of a thin-walled conical shell subjected to a cosine pulse loading. As a result, Von-mises stress fields of this shell at different time moments are obtained to test its dynamic strength.

运用有限元分析软件ANSYS/LS-DYNA对在余弦脉冲载荷作用下某圆锥薄壳体的瞬态动力响应过程进行分析，得出了不同时刻下壳体等效应力场的分布，考察了该壳体结构的动强度性能。

An AGC amplifier is presented. When pressing the dynamic range of the amplitude of CW ( Cosine Wave) pulse, it can shorten the time duration of front edge at the same time.

本文给出了一种在对CW（cosinewave）脉冲幅值做动态压缩的同时，能缩短CW脉冲前沿上升时间的AGC电路。