| 摘要 |
PURPOSE:To attain synchronization locking surely and quickly by employing a transmultiplexer type synthesis means receiving a signal from a switch means and using a filter bank whose frequency interval is f and whose respective band width is wider than f so as to apply frequency division multiplex. CONSTITUTION:An N-set of band pass filters whose band width is wider than f are arranged in a filter bank TDUX 9 at a frequency interval of f. A base band switch circuit 11 receives other complex signal groups in two- branched complex signal groups outputted from N-set of band pass filters of the TDUX 9 and selects a band pass filter represented by a selection signal Sc outputted from a carrier detection circuit 10 to pass through only a relevant signal in other signal group. A MUX 12 receives a complex signal outputted from the base band switch circuit 11 and applies frequency division multiplex with the filter bank whose band width is wider than f and whose frequency interval is f. |
