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. 21, 1994
Filed:
Sep. 30, 1992
Christopher P LaRosa, Lake Zurich, IL (US);
Michael J Carney, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The present disclosure includes a discussion of a method of and apparatus for channel quality estimation (CQE) in a receiver. Each channel is divided into observation intervals and sub-intervals. The duration of the sub-interval is chosen as the largest interval in which the channel is essentially static. The CQE collects error information for each symbol of the sub-interval, forming a sub-interval error value. The CQE maps the sub-interval error value into a sub-interval bit error rate (BER) estimate. The mapping is a non-linear function dependent on the specific radio system. Then, the CQE averages the sub-interval BER estimates over the entire observation interval, forming an interval BER estimate. Finally, the CQE compares the interval BER estimate to a predetermined threshold, forming a channel quality estimation decision for each observation interval.