Symbol clock regenerating apparatus, symbol clock regenerating program and symbol clock regenerating method

Abstract

To provide a technique for regenerating a symbol clock based on a digital modulation signal in which the symbol timing is accurately detected without need of using a synchronization word. A symbol clock regenerating apparatus comprises symbol value acquisition means 1, 2 for acquiring a symbol value at a sampling timing with a sampling clock having a frequency m times (m is an integer of 3 or greater) that of a symbol clock to be regenerated, based on a digital modulation signal, arithmetic operation means 4 for calculating an arithmetic operation value indicating whether or not each symbol value sequentially acquired is the same as the preceding symbol value, buffer means 4 for sequentially storing each arithmetic operation value sequentially calculated in a buffer of n rows (n is an integer of one or greater) and m columns, and timing detection means 7 for detecting the symbol timing based on the sampling timing corresponding to each column of the buffer and the arithmetic operation values accumulated in the buffer.

Dependencies are inferred from the claim text.