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.:
Date of Patent:
Oct. 17, 2000
Filed:
Sep. 04, 1997
Applicant:
Inventor:
Ali R Shah, Dallas, TX (US);
Assignee:
Ericsson Inc, Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D / ; H04L / ; H04L / ; H04L / ;
U.S. Cl.
CPC ...
375341 ; 375262 ; 375348 ; 371 433 ; 371 436 ; 371 437 ; 371 438 ;
Abstract
An improved system and method for maximum likelihood sequence detection where an incoming stream of symbols subjected to intersymbol interference (ISI) are decoded without knowledge of channel coefficients. Through use of improved metrics, the Fano and stack algorithms may be employed to determine the maximum likelihood sequence detection for a given input data stream during blind equalization, offering improved performance over the Viterbi algorithm which requires foreknowledge of the channel coefficients to operate effectively.