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...
values of I and Q, based on their recent prior history. An IQ decoder 21 translates the demodulated IQ combinations back into the original format for the program information. This re-translation appears as recovered program information 22. As will become evident as we proceed, phase shift networ...
it may include a voice encoder/decoder, in which case it may communicate directly with the baseband processor70. The microphone88will typically convert audio input, such as the user's voice, into an electrical signal, which is then digitized and passed directly or indirectly to the baseband pro...
Decoder 334 generates a decoded signal on line 336 and supplies the decoded signal to a transducer, here speaker 338. In the direct conversion receiver, the modulated receive signal detected at antenna 301 is not first converted to an IF signal. Directly converting the modulated receive signal ...
20100226428ENCODER AND DECODER CONFIGURATION FOR ADDRESSING LATENCY OF COMMUNICATIONS OVER A PACKET BASED NETWORKSeptember, 2010Thevathasan et al. Attorney, Agent or Firm: Knobbe, Martens, Olson & Bear, LLP Claims: What is claimed is: 1.A method for managing automatic gain control in quadrature ...
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...