1. Introduction2. sampling Principles3. Basebound digital waveform 4. Basebound digital systems5. Bandpass binary digital sytems6. M-ary digital systemAppendix A: Review of deterministic signals and networksB: Review of random signal theoryC: Trigonometric IdentitiesD: Usfull integrals and seriesE: Gaussion (normal) probability density and Distribution functionF: Table of error functionG: Table of usfull fourier trabsforms pair