Modern Digital and Analog Communication Systems (The ^AOxford Series in Electrical and Computer Engineering)
Lathi's trademark user-friendly and highly readable text presents a complete and modern treatment of communication systems. It begins by introducing students to the basics of communication systems without using probabilistic theory. Only after a solid knowledge base--an understanding of how communication systems work--has been built are concepts requiring probability theory covered. This third edition has been thoroughly updated and revised to include expanded coverage of digital communications. New topics discussed include spread-spectrum systems, cellular communication systems, global positioning systems (GPS), and an entire chapter on emerging digital technologies (such as SONET, ISDN, BISDN, ATM, and video compression).
Ideal for the first communication systems course for electrical engineers, Modern Digital and Analog Communication Systems offers students a superb pedagogical style; it consistently does an excellent job of explaining difficult concepts clearly, using prose as well as mathematics. The author makes every effort to give intuitive insights--rather than just proofs--as well as heuristic explanations of theoretical results wherever possible. Featuring lucid explanations, well-chosen examples clarifying abstract mathematical results, and excellent illustrations, this unique text is highly informative and easily accessible to students.
Why Read This Book
You should read this book if you want a clear, example-driven introduction to both analog and digital communications that builds intuition before introducing probability-based performance analysis. It balances practical system-level topics (modulation, demodulation, AM/FM, pulse and digital schemes, spread spectrum and cellular systems) with rigorous explanations and worked problems.
Who Will Benefit
Undergraduate or early-graduate students and practicing engineers seeking a solid, readable grounding in communication system principles and how they connect to signal-processing concepts.
Level: Intermediate — Prerequisites: Single-variable calculus, basic complex numbers and exponentials, and a first course in signals and systems (time/frequency domain). No advanced probability required for the opening chapters.
Key Takeaways
- Explain and analyze standard analog modulation schemes (AM, DSB-SC, SSB, FM) and their spectral/receiver characteristics.
- Compute SNR and evaluate noise impact on system performance using basic probability and random process tools.
- Design and analyze pulse- and digital-baseband/modulated systems including PAM, PCM, and typical digital modulations.
- Apply sampling, quantization, and matched-filter/detection theory to demodulation and symbol recovery problems.
- Describe spread-spectrum techniques and cellular/multiple-access concepts and their role in practical systems.
- Summarize modern digital network technologies (SONET, ISDN/ATM) and system-level considerations for data transmission.
Topics Covered
- Introduction and overview of communication systems
- Signals, linear systems, and Fourier methods review
- Random processes and noise fundamentals
- Amplitude modulation and demodulation (AM, DSB, SSB)
- Angle modulation and frequency modulation (FM/PM)
- The effect of noise on analog communication systems
- Pulse modulation and sampled-data systems (PAM, PCM)
- Digital communication fundamentals and baseband transmission
- Passband digital modulation and demodulation
- Detection, matched filters, and performance analysis
- Introduction to error sources and basic coding concepts
- Spread-spectrum, multiple-access, and cellular systems
- Emerging digital technologies (SONET, ISDN, ATM, video compression)
- Appendices: mathematical tools and reference material
How It Compares
More accessible and example-oriented than Proakis' Digital Communications (which is more mathematically rigorous); comparable in scope to Haykin's Communication Systems but Lathi emphasizes intuition and pedagogy over deep signal-processing proofs.
