However, the decoder can be incorporated in the coherent demodulator of the receiver, as shown in Figure 19.8(b). This is known as differential phase shift keying (DPSK). Then, the output signal of the demodulator is s5(n) = +1 if s4(n) and s4(n – 1) are represented by carriers...
Single-input three-output VM multifunction biquad filters, such as band-pass filter (BPF), low-pass filter (LPF), high-pass filter (HPF) or band-reject filter (BRF), are applied to the phase-locked loop, the high fidelity 3-way speaker, the touch-tone telephone tone decoder, and the...