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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4959842 B1

PDFFull Text
Date of Patent:
Sep. 25, 1990

Filed:

Apr. 13, 1988

Signal constellations

Applicant:
Inventor:

G David Forney, Jr, Cambridge, MA (US);

Assignee:

Codex Corporation, Canton, MA (US);

Attorney:

Fish & Richardson

Primary Examiner:

Benedict V Safourek

Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 39 ; 332103 ; 3701101 ; 371 43 ; 375 42 ;
Abstract

A Voronoi signal constellation with ties includes those points of a lattice .LAMBDA. (or a coset .LAMBDA.+c) that lie within a Voronoi region of a sublattice .LAMBDA.' of .LAMBDA., .LAMBDA.' being other then a scaled version of .LAMBDA., and the constellation includes more than .vertline..LAMBDA./.LAMBDA.'.vertline. points, where .vertline..LAMBDA./.LAMBDA.'.vertline. is the order of the lattice partition .LAMBDA./.LAMBDA.'. In order aspects, the lattices .LAMBDA. and .LAMBDA.' are of dimension greater than two; the sublattice .LAMBDA.' is a version of a binary lattice of depth at least two and normalized informativity less than one; a method is provided of mapping from m data bits to a point drawn from a Voronoi constellation of more than 2.sup.m points, based on an N-dimensional lattice partition .LAMBDA./.LAMBDA.'; and Voronoi constellations are provided comprising points of a lattice .LAMBDA. (or a coset .LAMBDA.+c) that lie within a Voronoi region of a sublattice .LAMBDA.' of .LAMBDA., the sublattice .LAMBDA.' comprising a binary lattice of depth two and normalized informativity less than one. Such sublattices .LAMBDA.' are also useful in lattice quantizers.

Find Patent Forward Citations

Forney, Jr, G. (1990). Signal constellations (U.S. Patent No. 4959842). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4959842

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