Digital receiver having programmable complex threshold detectors

Details Digital receiver having programmable complex threshold detectors Digital receiver having programmable complex threshold detectors

1997-08-15

1999-12-14

Chin, Stephen

Pulse or digital communications

Receivers

Automatic baseline or threshold adjustment

375340, 375345, H04L 2506, H04L 2510

Patent

active

060027231

ABSTRACT:
A programmable digital baseband receiver that processes a large number of signal waveforms and data rates. Programmable elements of the receiver implement coherent signal detection, automatic gain control and decision processing that permits processing of a large number of signal bandwidth efficient QAM and similar signal formats. The receiver comprises a threshold array having a plurality of programmable complex threshold detectors, and selectable decoder tree logic structures embodied in threshold interpreters. Each programmable complex threshold detector is a fully programmable I, Q threshold detector employing programmable I, Q sign threshold detectors that is adapted to the received complex baseband signal constellation.

REFERENCES:
patent: 5274674 (1993-12-01), Lafon
patent: 5438593 (1995-08-01), Karam et al.
patent: 5768306 (1998-06-01), Sawahashi et al.

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