中文说明:GMSK是msk调制的改进型,既是以高斯作为预调低通滤波基带滤波器的msk方式,所以称为高斯msk或者GMSK。在GMSK中,将调制的不归零数据通过预调高斯脉冲成行滤波器,使其频谱上的旁瓣水平进一步降低。基带的高斯脉冲成行技术平滑了msk信号的相位曲线,因此稳定了信号的即时频率变化,这使得发射频谱上的旁瓣谁水平大大降低。本程序完整实现了gmsk调制解调的全过程,绘制了相应的波形。
English Description:
GMSK is MSK modulation improvements, Gauss as a presetting, being the low-pass filter MSK baseband filters, called MSK or GMSK Gaussian.In GMSK, the non return to zero modulation data through the preset pulse filter to further reduce the sidelobe level on the spectrum. Baseband pulse technology MSK signal phase curve is smooth, stable signal instantaneous frequency changes that makes the emission spectrum of side-lobe level who is greatly reduced.This program is a complete implementation of GMSK modulation and demodulation process, draw the corresponding waveform.