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:
Apr. 21, 2009
Filed:
Jan. 27, 2005
Dan M. Griffin, Bountiful, UT (US);
Richard B. Ertel, Sandy, UT (US);
Johnny M. Harris, Centerville, UT (US);
Kenneth C. Bark, West Jordan, UT (US);
Zachary C. Bagley, Salt Lake City, UT (US);
Dan M. Griffin, Bountiful, UT (US);
Richard B. Ertel, Sandy, UT (US);
Johnny M. Harris, Centerville, UT (US);
Kenneth C. Bark, West Jordan, UT (US);
Zachary C. Bagley, Salt Lake City, UT (US);
L-3 Communications, Corp., New York, NY (US);
Abstract
A method is disclosed for PN correlation and symbol synchronization of a spread spectrum signal at a receiver when a symbol boundary of the spread spectrum signal is not on a PN epoch or is otherwise unknown. The method includes the operation of modulating the spread spectrum signal with a PN code to form a potentially despread signal. The potentially despread signal can be integrated for a plurality of symbol times at a rate of N integrations per symbol time to form N symbol energies per symbol for a plurality of symbols. Each of the N symbol energies can correspond to a different symbol time hypothesis. The N symbol energies from the plurality of symbols can be added respectively to form N summed symbol time hypotheses. The Nth summed symbol time hypothesis having maximum power can be found. The Nth summed symbol time hypothesis can relate to a location of the symbol boundary.