Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-07-21
2009-12-01
Kim, Kevin Y (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S149000, C375S354000
Reexamination Certificate
active
07627020
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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Demir Alpaslan
Ozluturk Fatih M.
InterDigital Technology Corporation
Kim Kevin Y
Volpe and Koenig PC
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