Alternate mark inversion (AMI) receiver

Details Alternate mark inversion (AMI) receiver Alternate mark inversion (AMI) receiver

1986-01-07

1987-05-12

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 94, 360 40, H04L 2549

Patent

active

046655310

ABSTRACT:
An AMI signals receiver generates a logic signal stream representative of AMI encoded information signals which have traversed a transmission medium. Adaptive compensation circuits are responsive to characteristics of the received AMI signals for generating a bipolar signal ideally corresponding to the transmitted AMI signal but in practice includes noise primarily caused by near-end crosstalk. An apparent improvement in the signal-to-noise ratio is achieved by generating a unipolar signal from instant and last amplitude samples of the bipolar signal and thereafter differentially decoding a binary signal representation of the unipolar signal.

REFERENCES:
patent: 2700696 (1955-01-01), Barker
patent: 3828346 (1974-08-01), Forster et al.
patent: 4112383 (1978-09-01), Burgert
patent: 4267595 (1981-05-01), Hernandez
patent: 4507621 (1985-03-01), Meyer
patent: 4584690 (1986-04-01), Cafiero et al.

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