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:
Jun. 07, 1994
Filed:
May. 12, 1992
Applicant:
Inventor:
Youngky Kim, N. Potomac, MD (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04L / ; H04L / ; H03D / ;
U.S. Cl.
CPC ...
375100 ; 375 94 ; 375102 ;
Abstract
A diversity combiner for use with the maximum likelihood sequence estimator is disclosed. First and second receive channels produce demodulated replicas Z.sub.1 (k) and Z.sub.2 (k) of the transmitted symbol data I(k). The two signals are processed in a Viterbi equalizer to obtain a single branch metric calculation based on the two signals Z.sub.1 (k) and Z.sub.2 (k) . The Viterbi equalizer provides an estimated value of I(k) based on this single branch metric calculation, which is used for channel estimator for both antennas.