| 摘要 |
PROBLEM TO BE SOLVED: To provide a frame synchronization circuit that can early establish frame synchronization on the basis of a synchronous word inserted at the same position of each frame as a wireless transmission signal. SOLUTION: A memory section 1c stores one frame of a received wireless transmission signal as a complex correlation signal, a detection section 1d detects and holds an address at which a maximum complex correlation signal is stored from the complex correlation signal as a peak address, and a comparison section 1e compares the peak address with an address signal from a frequency divider section 1g. Forcibly resetting a generator 1h with a first address coincident signal denoting the coincidence of the addresses can apply forced phase matching of a frame pulse with the succeeding address coincident signal. |
