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. 27, 2015
Filed:
May. 02, 2012
Donald Malocha, Winter Springs, FL (US);
Nikolai Kozlovski, Orlando, FL (US);
Donald Malocha, Winter Springs, FL (US);
Nikolai Kozlovski, Orlando, FL (US);
University of Central Florida Research Foundation, Inc., Orlando, FL (US);
Abstract
Methods, systems and devices for correlator time delay extraction for wireless acoustic wave devices. A receiver receives an analog signal as a sum of plural different analog coded signals each having a different time delay and matched filters corresponding to the acoustic devices is used to extract the time delay to recover the original plural different analog coded signals. In an embodiment the acoustic devices generate orthogonal-frequency codes signals with block-time-diversity to reduce the cross-correlation 'noise' due to multi-codes. The time diversity spreads the tags ensemble energy in time, thereby reducing the time energy density. An estimate of the delay time using the passband frequency phase slope, or in the time domain by using the correlation peak, is obtained.