| 摘要 |
PROBLEM TO BE SOLVED: To execute the correlation operation of frame synchronous detection through the use of a discrete and inserted symbol other than a synchronous word by synchronizing the symbols with a symbol synchronizing signal generated with a second frame synchronizing signal as a reference and synchronizing the frames of reception signals. SOLUTION: A second frame synchronous detection part 10 correlation- operates the base band signals of an I phase and a Q phase, which are inputted from a route roll-off filter 4, and a known discrete symbol inputted from a discrete symbol generator 11 at a symbol synchronous point at the periphery of a first frame synchronizing signal. A second frame synchronizing signal correct in frame synchronous point is outputted to a symbol synchronizing signal generation part 12. The symbol synchronizing signal generation part 12 generates a symbol synchronizing signal at every symbol time interval for synchronizing the symbols with the second frame synchronizing signal inputted from the second frame synchronism detection part 10 as a reference and outputs it to a decimation part 5. |
