Minimum Shift Keying (MSK), uses two frequencies which are separated by 1/2T and phase discontinuity is avoided in symbol boundaries. Further, MSK transmission can also be visualized as a variant of offset-QPSK technique, where sinusoidals are used f

QPSK信号的根升余弦成型， 和QPSK信号的矩形成型-QPSK signal root raised cosine shaping And QPSK signal rectangular forming

QPSK信号MATLAB仿真，分别有波形为滚降波形（载频为5Hz，符号速率为1Baud）和波形为矩形波（载频为5Hz，符号速率为1Baud）两种波形形成的仿真。以及误比特率性能曲线、星座图。 -MATLAB simulation of the QPSK signal, respectively, the waveform for the roll-off waveform (carrier frequency 5Hz, the symbol rate for 1Baud) and the w