quantization on quantization data transmitted from transmission apparatus 100 and obtains a signal output signal after the inverse quantization reception apparatus 200 is an re and is an rrh remote radio head for example further reception apparatus 200 may convert up sampling the data rate of the received signal which is not illustrated in the drawing transmission apparatus 100 includes standard deviation measurement section 101 kurtosis measurement section 102 correction coefficient determination section 103 control section 104 quantization section 105 multiplex section 106 and optical device 107 standard deviation measurement section 101 measures standard deviation u03c3 of an input signal and outputs the measured standard deviation u03c3 to kurtosis measurement section 102 and control section 104 kurtosis measurement section 102 uses an input signal and standard deviation u03c3 input from standard deviation measurement section 101 to measure the u201c degree of kurtosis u201d which represents the degree of concentration of the amplitude distribution of the input signal kurtosis measurement section 102 outputs information representing the measured degree of kurtosis to correction coefficient determination section 103 fig3 is used for describing the characteristics of the degree of kurtosis as illustrated in fig3 when the amplitude distribution of an input signal is a regular distribution the degree of kurtosis is 0 in addition as illustrated in fig3 in the amplitude distribution of an input signal the degree of kurtosis has a large value in fig3 0.