Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform


Posted on Feb 5, 2014

In binary phase shift keying (BPSK) modulation scheme, the phase of a carrier is changed in accordance with the digital pulse signals. BPSK modulator is basically a phase modulator. Here the transmitted signal is a sinusoid of fixed amplitude. It has one fixed phase when the data is at one level and when the data is at the other level, phase is sh


Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform
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ifted by 180 degree. Binary phase shift keying method has variety of applications in digital communications systems such as the wireless LAN standard, IEEE 802. 11, digital modems, wireless telephone networks etc. Differential phase shift keying (DPSK) is an other type of phase shift keying technique which depends on the difference between successive phases. DPSK is significantly simpler to implement than ordinary PSK, since there is no need for the demodulator to have a copy of the reference signal to determine the exact phase of the received signal (it is a non coherent scheme). Here is the practical circuit of BPSK, it is build around CD4016 and 741 Op amp. Also read: Binary Amplitude Shift Keying(BASK)




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