Digital data communicating method, involves receiving modulated carrier signal transmitted via wireless telecommunications network, and demodulating received modulated carrier signal back into digital data

摘要

The method involves modulating multiple carrier signals with digital data using differential phase shift keying modulation for producing a modulated carrier signal. The modulated carrier signal is transmitted across a voice channel of a wireless telecommunications network. The modulated carrier signal transmitted via the wireless telecommunications network is received. The received modulated carrier signal is demodulated back into the digital data.