COMMUNICATION THEORY 1 ECM 221 CHAPTER 4: DIGITAL COMMUNICATION SYSTEMS Introduction of digital modulation • • • If the information signal is digital and the amplitude…
* * * Signal sources (a) Thévenin form, (b) the Norton form. Figure 1.1 * Figure 1.3 Sine-wave voltage signal of amplitude Va and frequency f = 1/T Hz. The angular frequency…