Generalized model of a satellite information transmission channel using Nyquist shaping filters
... noise, the implementation of a BPSK demodulator and a decoder based on the Witterby algorithm are presented in this article. As a result of verification of the model, it is shown that in the absence of additive noise, the Nyquist filter eliminates intersymbol interference. The gain in the signal-to-noise ratio (SNR), at which the set value of the bit error rate (BER) is achieved, can be up to 9 dB when the rounding factor of the Nyquist filter is reduced from 0.9 to 0.3.
Volkhonskaya E. V., Korotey ...