Part 3: Digital Communication Over a Single Link
Chapter 8: Digital Modulation
Intermediate~90 min
Learning Objectives
- Represent digital signals geometrically in signal space and apply the Gram-Schmidt procedure to construct orthonormal bases
- Derive the ML detector as the minimum-distance rule and construct Voronoi decision regions
- Design and analyse PAM, QAM, and PSK constellations with Gray mapping for minimum BER
- Explain the principles of FSK, MSK, and GMSK and their connection to continuous-phase modulation
- State and apply the Nyquist ISI-free criterion and design raised-cosine and root-raised-cosine pulse-shaping filters
- Evaluate spectral efficiency and power efficiency trade-offs using the bandwidth efficiency plane
- Compare modulation formats in terms of bits/symbol, required Eb/N0, and Shannon gap
Sections
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