| 摘要 |
The invention relates to a synchronism judgment apparatus for judging establishment of synchronization with a frame received as a sequence of consecutive slots to which sync patterns are dispersively distributed in a form commensurate with the receiving mode according to a standard suitable for one of a plurality of receiving modes, as well as to a communication system where such a synchronism judgment apparatus is employed. The synchronism judgment apparatus of the invention enables judgment of establishment of synchronization with accuracy compared to a conventional example as long as the above standard is reliably given or identified. Therefore, in a communication system to which the invention is applied, it is possible to maintain the transmission quality and the service quality high and flexibly adapt to a variety of communication services and transmission rates, and the transmission information quantity that may vary to a large extent.
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