method for wellenformdatenkorrektur in the modulation of digital signals and baseband signal generator, the data generated by this procedure are used.

摘要

This invention relates to a method for correcting quantized waveform data which are made by a process of quantizing a base band waveform, so optimized as to make a sum of errors included in a single bit range of input digital data smaller than one quantizing step, and are output as the base band waveform which is to be accumulated or integrated in the requirement of the system (such as frequency-to-phase conversion). Since an accumulated sum of the quantized waveform data has some error from the real base band waveform when those quantized waveform data are accumulated so as to generate phase information from frequency information, the quantized waveform data have to be corrected previously. For the purpose of restraining the accumulated error, this method has the steps of defining states corresponding to input data patterns, establishing simultaneous equations corresponding to state transition routes respectively, solving the equations, and deciding correcting values to the quantized data.