Replies to post #288246 on InterDigital Inc (IDCC)

[Gamco]

United States Patent 7,706,332
Ozluturk , et al. April 27, 2010

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Method and subscriber unit for performing power control


Abstract
A system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system, comprises a generator for generating a first long code and a second long code, with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle, respectively, on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I acquisition circuit and a Q acquisition circuit may acquire, in parallel, the first long code and the second long code from the I angle and the Q angle, respectively, of the carrier signal by searching, in parallel, N/2 chips of the first long code and the second long code.


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Inventors: Ozluturk; Fatih (Port Washington, NY), Lomp; Gary (Centerport, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)

Appl. No.: 11/181,450
Filed: July 14, 2005

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
09742990 Mar., 2006 7020111
08956740 Apr., 2001 6215778
08669775 Aug., 1998 5799010
60000775 Jun., 1995


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Current U.S. Class: 370/335 ; 375/145; 455/522
Current International Class: H04B 7/216 (20060101); H04B 1/00 (20060101); H04B 7/00 (20060101)
Field of Search: 370/335