Radio communication system

Abstract

A transmission device () includes: a series/parallel converter (); an MSK modulator () for modulating a signal on a channel basis; a D/A converter (); a frequency converter () for conversion into different carrier frequencies; a synchronization circuit (); an amplifier (); a multiplexer () for multiplexing amplification signals; and an antenna (). A reception device () includes: an antenna (); a demultiplexer (); a frequency converter () for converting signal demultiplexed on a channel basis into a baseband frequency; a low-pass filter () for removing a higher-harmonic component of the signal; an A/D converter (); a digital filter () for extracting a main wave component from the digital signal; a sampling point detection circuit () for detecting a sampling point from the main wave component; an MSK demodulator () for reproducing and demodulating a symbol point based on detection information by an interpolation process; and a parallel/series converter () for restoring an original signal from the demodulated signal.