Communication method applying special coherent modulation/demodulation carrier signal
A technology for modulating carrier signals and carrier signals, which is applied in the direction of modulated carrier systems, phase-modulated carrier systems, digital transmission systems, etc., and can solve the problem of high cost
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[0044] figure 1 It shows the principle of realizing multiplexing transmission by using the communication method using special coherent modulation and demodulation carrier signal provided by the present invention. Multiplexing transmission can greatly improve the transmission efficiency of the channel, and is currently the most widely used technology in communication. The multiplexing transmission illustrated in the present invention belongs to the multiplexing of frequency band grouping.
[0045] figure 1 in, f n (t) is the input signal, A1, A2...AN is the multiplier of the system modulator, S dn % (t) is the modulated carrier signal, S d (nt) is the demodulated carrier signal, B1, B2...BN is the multiplier of the system demodulator, C1, C2...CN is the integrator or low-pass filter of the demodulator, f n '(t) is the received signal.
[0046] According to the transmission requirements, demodulate the carrier signal S d (nt) In a variety of digital signals, signals of d...
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