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:
Dec. 26, 2006
Filed:
Mar. 19, 2001
Jürgen Otterbach, Stuttgart, DE;
Hardy Halbauer, Ettlingen, DE;
Gabriele Schwoerer, Weil der Stadt, DE;
Peter Jaenecke, Straubenhardt, DE;
Jürgen Otterbach, Stuttgart, DE;
Hardy Halbauer, Ettlingen, DE;
Gabriele Schwoerer, Weil der Stadt, DE;
Peter Jaenecke, Straubenhardt, DE;
Alcatel, Paris, FR;
Abstract
A synchronization procedure for a multipoint-to-point CDMA network (), which minimizes the influence on the information transmission. Instead of interleaving communications and synchronization signals timewise, a simultaneous emission is proposed, in which the synchronization signals are superimposed on the communications signals. The synchronization signals are coded with a special synchronization code (), which does not correspond to the CDMA communications code of the information signals, e.g Barker code. In addition, the synchronization signals are sent at a lower amplitude compared with the communications signals. The synchronization signals are also modulated () prior to sending, in particular using alternating multiplication by +1 and −1. On the receiving side (), the synchronization signals are detected by demodulation (), correlation () and subsequent accumulation. The transmission capacity for the communications signals is maximized by this procedure and the influence of the synchronization signals on the communications signals minimized.