Method and apparatus for detecting synchronization of...

Details Method and apparatus for detecting synchronization of... Method and apparatus for detecting synchronization of...

2011-01-11

2011-01-11

Chase, Shelly A (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

07870470

ABSTRACT:
An apparatus for detecting synchronization of a Broadcasting Channel (BCH) in an asynchronous mobile communication system. A Viterbi decoder calculates a zero state path metric and a minimum path metric through an Add-Compare-Select (ACS) process and a trace-back process while decoding a frame of a received BCH. A Cyclic Redundancy Check (CRC) checker performs CRC check on the decoded BCH frame. A controller detects Transmission Time Interval (TTI) synchronization of the received BCH using the CRC check result and a result obtained by comparing a difference between the zero state path metric and the minimum path metric with a threshold.

REFERENCES:
patent: 7228491 (2007-06-01), Oki
patent: 7281195 (2007-10-01), Murata et al.

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