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:
Jul. 11, 2006
Filed:
Dec. 11, 2000
David Lahiri Bhatoolaul, Grange Park, GB;
Pantelis Monogioudis, Edison, NJ (US);
David Lahiri Bhatoolaul, Grange Park, GB;
Pantelis Monogioudis, Edison, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method is provided of detecting one of a set of preamble sequences in a spread signal. The method includes: (a) correlating the received spread signal with sequences of a first orthogonal Gold code (OGC) set in accordance with a first fast transform to provide a preamble signal; (b) correlating the preamble signal with the set of preamble sequences in accordance with a second fast transform to generate a set of index values; (c) forming a decision statistic based on the set of index values: and (d) selecting, as the detected one of the set of preamble sequences, a preamble sequence corresponding to the decision statistic. Step (c) comprises the steps of: 1) forming an initial decision statistic based on the relative maximum index of the set of index values; 2) selecting the signal generated by the preamble sequence combined with the preamble signal corresponding to the initial decision statistic; 3) adjusting, in one or more of amplitude and phase, the signal selected in step 2); and 4) forming the decision statistic based on the adjusted signal.