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:
May. 19, 1998
Filed:
May. 06, 1996
Michael A Eberhardt, Hanover Park, IL (US);
Colin D Frank, Schaumburg, IL (US);
Phillip D Rasky, Buffalo Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A communication device (100) includes a plurality of receiver fingers (112, 114, 116) for receiving a spread spectrum communication signal. Each receiver finger includes a received signal strength indication (RSSI) circuit (130). The RSSI circuit (130) includes a filter (135) for filtering a pilot sample signal and producing a filtered signal. A comparator (144) producing a lock indication when the filtered signal exceeds lock threshold. A combiner (118) combines the traffic signal from each receiver finger in response to the lock indication from each finger. The unlock threshold for the finger is reduced to a level above the noise floor of the receiver finger, to reduce the likelihood of a finger unlocking during a fade. Also traffic symbols are immediately combined after a finger assignment using a weighted channel estimate to permit assigning a finger as locked.