Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1982-03-15
1984-05-15
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307268, 307359, 328147, 328164, H03K 508, H03K 5153
Patent
active
044491026
ABSTRACT:
The adaptive threshold circuit (FIG. 1) senses the amplitude of a digital signal relative to a threshold and generates a corresponding output signal therefrom. Feedback circuitry generates a correction signal which drives the threshold toward a predetermined level in the signal-eye pattern. This predetermined level passes only through the region of intersymbol interferene in the signal-eye pattern.
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M. A. Byington et al., "Design and Performance of 16-State Digital Modem" ICC Conference Record, vol. 1, 1979, pp. 5.4.1-5.4.6.
M. Washio et al., "1.6Gb/s 16-Level Superposed APSK Modem with Baseband Signal-Processing Coherent Demodulator", IEEE MTFS International Microwave Symposium, Dec. 1978, pp. 945-951.
W. B. Gaunt et al., "The D3 Channel Bank" Bell Laboratories Record, Aug. 1972, pp. 229-233.
Bell Telephone Laboratories Incorporated
Padnes David R.
Zazworsky John
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