This initial demodulator incorporates a digital mixer, DDFS and low-pass filter.
该解调器由数字混频器、数字频率合成器(DDFS)和低通滤波器构成。
2
Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.
Simulations show that for a 4-symbol parallel width 2-symbol output width demodulator, the demodulation loss caused by time domain truncation in the parallel filter is about 0.6 dB.