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. 20, 2004
Filed:
Jul. 19, 2000
Radwin Ltd., Tel Aviv, IL;
Abstract
Terminal transmission method and the received signal model are used to develop two methods that estimate the starting time vicinity associated with a random access channel (RACH). First of said methods, called I *Q RACH starting time vicinity estimation (STVE), multiplies the I and Q branches of a sample and exacts the starting time of a preamble signal from the peak output of the phase metrics expression (for both even and odd periodicity). The second method, called (I +jQ ) RACH STVE, performs a square operation on the received complex signal and calculates the peak output of the corresponding phase metric to extract the exact starting time of a preamble signal. Compliance with the standard of the 3 generation for cellular systems is also described whereby the timing is synchronized, the uncertainty of the preamble phase (at the base station) is minimized, and the complexity of the RACH receiver is significantly reduced