| 摘要 |
FIELD: digital communications and digital signal processing. ^ SUBSTANCE: proposed digital data transfer process includes transfer of signals bearing intersymbol interference messages that can be transferred at specific speed of up to 2 baud/Hz of band; in the process modulated intersymbol interference test signal is transferred, x(n) readings of test signal received on receiving end are obtained at output of analog-to-digital converter, test signal pulse waveform is corrected at digital filter input by reducing readings exceeding length of pulse corrected at digital filter input to zero, test signal is passed through digital filter, and y(n) readings are obtained at digital filter output; digital filter coefficients are found from following formulas: W = (X H)-1 Y, or directly from where W is column vector of unknown weighting coefficients for finding column vector of digital filter coefficients ; H is diagonal matrix of digital filter original coefficients; X is matrix of x(n) readings of intersymbol interference test signal received at analog-to-digital converter output; Y is column vector of y(n) readings at output of original-coefficient digital filter. ^ EFFECT: enhanced noise immunity during high-speed transmission of messages. ^ 2 cl, 13 dwg |
