FIELD: radio engineering.
SUBSTANCE: in demodulator presence of comparators from eleventh to fourteenth with appropriate thresholds of effect allows to divide zones of decision, matching input signal with maximal amplitude, on additional squares, when signal point gets into these, it signifies deflection of input signal level from standard. Seventh and eighth counters count number of points with decreased and increased amplitudes respectively, comparing which in second comparison block allows to produce at output of second special element a controlling voltage for compensation of this component of interference resistance losses.
EFFECT: higher interference resistance.
7 dwg, 2 tbl
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DEMODULATOR FOR SIGNALS OF SIXTEEN-POSITION QUADRATURE AMPLITUDE MODULATION | 2005 |
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Authors
Dates
2005-04-10—Published
2003-04-11—Filed