Pulse Shaped 8-Psk Bandwidth Efficiency and Spectral Spik...
Tao, Jian-Ping / National Aeronautics and Space Administr
The most bandwidth-efficient communication methods are imperative to cope with the congested frequency bands. Pulse shaping methods have excellent effects on narrowing bandwidth and increasing band utilization. The position of the baseband filters for the pulse shaping is crucial. Post-modulation pulse shaping (a low pass filter is located after the modulator) can change signals from constant envelope to non-constant envelope, and non-constant...