BAND SPREAD SPECTRUM COMMUNICATION

摘要

a transmitter having a band spreader(32) for receiving a data signal and band-spreading it, a power distributor(34) for distributing the band-spreaded signal in a predetermined power ratio, a mixer(35) for mixing the signal with two or more carrier frequency; a filter(36) for band-passing the mixed signal, and coupler(37) for coupling the filtered signals; a receiver having an amplifier(41) for amplifying the singal transmitted from the transmitter; a filter(42) for band-passing the amplified signal to divide it by bands; a carrier frequency mixer(43) for multiplying the signals by the carrier frequency; a band spreader for reverse-spreading the signals; a signal processor(46) for tracking the sync of a selected signal; and a demodulator(47) for demodulating the signal to extract raw data.