Frame synchronization device, communication terminal...

Details Frame synchronization device, communication terminal... Frame synchronization device, communication terminal...

2007-03-20

2007-03-20

Burd, Kevin (Department: 2611)

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

C375S145000, C375S343000

Reexamination Certificate

active

10359692

ABSTRACT:
According to the present invention, there is disclosed a frame synchronization device which detects a time point to start a data frame from a received signal. Here, the received signal is constituted by disposing the data frame following a preamble period constituted by repeatedly disposing a synchronization symbol. The device stores the synchronization symbol in a memory, and establishes correlation between the synchronization symbol stored in the memory and the received signal by the first correlation processor. The received signal is delayed by a time corresponding to a length of the synchronization symbol by a delay unit, correlation is established between signals before and after the delay by a second correlation processor, and the preamble period is detected from a correlation processing result. The start time point of the data frame is detected based on the correlation processing result of the first correlation processor obtained during the preamble period.

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