DIGITAL TRANSMITTER

摘要

PROBLEM TO BE SOLVED: To easily eliminate IC component superimposed on a signal and to sufficiently enhance transmission performance. SOLUTION: A DC offset correction section 13 is inserted between an A/D converter conversion section A and a demodulation processing section B of a receiver of the digital transmitter to detect a low frequency component of a multiple (t) of a symbol period (t is about 10) or more from a sample series output of a received signals. The low frequency component of the symbol period or move is eliminated by keeping the correction value constant at least within a valid symbol period in order to eliminate the low frequency component.