Method and system for digital modulation for burst mode applications

摘要

A method and system for digital modulation, particularly in burst mode applications, using a root raised cosine filter operating at a rate of four-samples-per-symbol. The raised cosine pulse-shaped baseband signal is interpolated in order to achieve a sampling rate of 44.96 MHz at the digital up-converter. The two-stage interpolation provides an overall interpolation ratio of 20. The digital upconverter performs the frequency adjustments for channelization and Doppler correction.