Pulse or digital communications – Repeaters – Testing
Patent
1991-11-15
1993-11-30
Kuntz, Curtis
Pulse or digital communications
Repeaters
Testing
3647242, H03H 730, H03H 740
Patent
active
052672654
ABSTRACT:
A decision feedback equalizer for equalizing a received analog baseband signal (1) has a gain control circuit (11) which compresses the amplitude of the baseband signal (1) to 1/K (K.gtoreq.1). The compressed signal is converted to a digital signal by an analog-to-digital converter (12). A decision feedback equalizer section (101) has a feedforward equalizer (201) to which the digital signal is applied, a feedback equalizer (202), and an adder (13) for adding the outputs of the feedforward and feedback equalizers. A postprocessor (15) discriminates the adder output (S1') which has been multiplied by K to thereby output a received data signal (d) and a discrimination error signal (e). An expansive decision circuit (104) expands the adder output by L times (L>1), discriminates the expanded signal, and delivers the result of discrimination to the feedback equalizer (202). A control signal generator (102) feeds tap coefficients to the feedforward and feedback equalizers.
REFERENCES:
patent: 4524424 (1985-06-01), White
patent: 4847797 (1989-07-01), Picchi et al.
patent: 5097482 (1992-03-01), Serizawa et al.
"An Adaptive Decision Feedback Equalizer", IEEE Transactions On Communication Technology, vol. COM-19, No. 3, Jun. 1971, pp. 281-293 by D. A. George.
Kuntz Curtis
NEC Corporation
Phan Hai H.
LandOfFree
Decision feedback equalizer with expansion and decision circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Decision feedback equalizer with expansion and decision circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decision feedback equalizer with expansion and decision circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2103654