United States Patent 8,005,129
Demir , et al. August 23, 2011
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Acquisition circuit for low chip rate option for mobile telecommunication system
Abstract
A User Equipment (UE) receives and samples communication signals, where the communication signals have a time frame format, a transmission chip rate and a synchronization code associated with a time slot that includes a midamble that indicates a modulation of the synchronization code where a specified modulation of received synchronization codes identifies the timing for a timeslot in which data is to be received. The UE preferably includes a synchronization code determination circuit, a midamble determination circuit, and a phase modulation sequence detection circuit operatively associated with the midamble determination circuit. The UE can be configured for use with the low chip rate option of the Third Generation Partnership Project (3GPP) Universal Mobile Telecommunication System (UMTS) standards that employ a predefined set of downlink SYNC codes that point to midambles which indicate SYNC code modulation sequence to enables reading of data in a subsequent Broadcast Channel (BCH) message.
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Inventors: Demir; Alpasian (East Meadow, NY), Ozluturk; Fatih M. (Port Washington, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 12/605,638
Filed: October 26, 2009
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
12176850 Jul., 2008 7627020
11352570 Jul., 2008 7403555
10832847 Apr., 2006 7027495
10267512 Jul., 2004 6760365
60238590 Oct., 2001
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Current U.S. Class: 375/150 ; 375/142; 375/149; 375/365
Current International Class: H04B 1/707 (20060101)
Field of Search: 370/320,335,342,441,479,503,509,512,514 375/130,141-143,145,147-150,152,354,365,366,368,343
PPP
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