| 摘要 |
PURPOSE:To enable a data system to be reproduced to an original data system correctly without transmitting data after attaching a synchronizing signal from a transmission side, by attaching a code synchronizing state deciding function on plural error correction demodulators to be prepared on a reception side. CONSTITUTION:An input data system is error-correction encoded independently by using an error correction encoder 104, and its output data system is sent to a data multiplex circuit 108 via a compression buffer 106, and is multiplexed at every code block unit, then, it is transmitted. On the reception side, a trans mitted data system is separated to parallel data systems at a data separation circuit 112, and is sent to a demodulator 116 via a data expansion buffer 114. The demodulator 11b is provided with a function to decide a phase synchroniz ing state, and the data system that is the output of the demodulator 116 is multiplexed at a data multiplex circuit 120, and becomes the output data system corresponding to the input data system on the transmission side.
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