Cdma: Principles of Spread Spectrum Communication
Spread spectrum multiple access communication, known commercially as CDMA (Code Division Multiple Access), is a driving technology behind the rapidly advancing personal communications industry. Its greater bandwidth efficiency and multiple access capabilities make it the leading technology for relieving spectrum congestion caused by the explosion in popularity of cellular mobile and fixed wireless telephones and wireless data terminals.
Written by a leader in the creation of CDMA and an internationally recognized authority on wireless digital communication, this book gives you the technical information you need. It presents the fundamentals of digital communications and covers all aspects of commercial direct-sequence spread spectrum technology, incorporating both physical-level principles and network concepts. You will find detailed information on signal generation, synchronization, modulation, and coding of direct-sequence spread spectrum signals. In addition, the book shows how these physical layer functions relate to link and network properties involving cellular coverage, Erlang capacity, and network control.
With this book, you will attain a deeper understanding of personal communications system concepts and will be better equipped to develop systems and products at the forefront of the personal wireless communications market.
Why Read This Book
You will learn the engineering foundations and system-level design principles behind commercial CDMA and direct-sequence spread-spectrum systems from one of the technique's pioneers. The book pairs rigorous analysis (capacity, interference, BER) with practical design topics (RAKE receivers, power control, synchronization), so you can move from theory to implementable DSP and base-station solutions.
Who Will Benefit
Telecommunications and DSP engineers or graduate students with some communications background who are designing or evaluating cellular/PCS systems, baseband algorithms, or CDMA-based products.
Level: Advanced — Prerequisites: Undergraduate-level signals and systems, probability and random processes, basic digital communications (modulation, BER concepts), and familiarity with linear algebra and Fourier analysis.
Key Takeaways
- Design direct-sequence CDMA transmitters and receivers, including spreading/despreading and chip-rate processing.
- Analyze CDMA capacity, interference limits, and spectral efficiency using statistical signal-processing and link-budget techniques.
- Implement RAKE reception and diversity combining for multipath channels and evaluate performance under fading.
- Apply synchronization and acquisition algorithms and select/design spreading sequences to manage multiple-access interference.
- Develop power-control, handoff, and system-level strategies for reliable multiuser cellular operation.
- Evaluate the impact of coding, modulation, and multiuser detection on BER and overall system throughput.
Topics Covered
- 1. Introduction and Historical Context of Spread Spectrum and CDMA
- 2. Fundamentals of Digital Communications and Random Processes
- 3. Principles of Spread-Spectrum Communications
- 4. Direct-Sequence Spread Spectrum (DS-SS) and CDMA Basics
- 5. Spreading Sequences: PRN/Walsh Codes and Code Design
- 6. Modulation, Multiplexing, and Spectral Characteristics
- 7. Synchronization, Acquisition, and Tracking
- 8. RAKE Receivers and Multipath Diversity
- 9. Multiuser Interference, Detection, and Near–Far Problem
- 10. Power Control, Soft Handoff, and System Capacity
- 11. Error Control Coding and Combined Coding–Spread-Spectrum Strategies
- 12. Practical Implementation Issues and Commercial CDMA Systems
- Appendices: Mathematical Tools, Channel Models, and Derivations
Languages, Platforms & Tools
How It Compares
Compared with R. C. Dixon's 'Spread Spectrum Systems with Commercial Applications' it is more CDMA- and cellular-focused and authored by a creator of CDMA; compared to Tse & Viswanath's 'Fundamentals of Wireless Communication' it is more engineering- and implementation-oriented and less information-theory centric.
