Communication signal having a time domain pilot component

Details Communication signal having a time domain pilot component Communication signal having a time domain pilot component

1991-10-28

1996-05-21

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

375261, 375298, 375340, 375364, 370 74, H04L 2728, H04L 104, H04J 108

Patent

active

055197302

ABSTRACT:
A quad 16 QAM transmission and reception methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses. Depending upon the embodiment, each 16 QAM pulse can include a time domain pilot reference, or an estimated pilot reference for that pulse can be determined either by reference to pilot references in other pulses sharing the same packet, or by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.

REFERENCES:
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patent: 3341776 (1967-09-01), Doelz et al.
patent: 3404229 (1968-10-01), Downey et al.
patent: 3550003 (1970-12-01), Halsted
patent: 3708751 (1973-01-01), Starr et al.
patent: 4110562 (1978-08-01), Moed
patent: 4581748 (1986-04-01), Sasaki et al.
patent: 4881245 (1989-11-01), Walker et al.
patent: 4945549 (1990-07-01), Simon et al.
patent: 5140615 (1992-08-01), Jasper et al.
patent: 5170413 (1992-12-01), Hess et al.

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