Fundamentals of spread spectrum modulation

• Main Author: Ziemer, Rodger E.
• Format: Electronic
• Language: English
• Published: San Rafael, Calif (1537 Fourth Street, San Rafael, CA 94901 USA) : Morgan & Claypool Publishers, 2007.
• Edition: 1st ed.
• Series: Synthesis lectures on communications (Online) ; #3.
• Subjects: Digital modulation.; Spread spectrum communications.
• Online Access: View fulltext via EzAccess
• Item Description: Part of: Synthesis digital library of engineering and computer science.; Title from PDF t.p. (viewed on Nov. 5, 2008).; Series from website.
• Physical Description: 1 electronic text (v, 79 p. : ill.) : digital file.; Also available in print.
• Format: Mode of access: World Wide Web.; System requirements: Adobe Acrobat Reader.
• Bibliography: Includes bibliographical references (p. 77-78).
• ISBN: 159829265x (electronic bk.); 1598292641 (pbk.); 9781598292640 (pbk.)
• ISSN: 1932-1708
• Access: Abstract freely available; full-text restricted to subscribers or individual document purchasers.

This lecture covers the fundamentals of spread spectrum modulation, which can be defined as any modulation technique that requires a transmission bandwidth much greater than the modulating signal bandwidth, independently of the bandwidth of the modulating signal. After reviewing basic digital modulation techniques, the principal forms of spread spectrum modulation are described. One of the most important components of a spread spectrum system is the spreading code, and several types and their characteristics are described. The most essential operation required at the receiver in a spread spectrum system is the code synchronization, which is usually broken down into the operations of acquisition and tracking. Means for performing these operations are discussed next. Finally, the performance of spread spectrum systems is of fundamental interest and the effect of jamming is considered, both without and with the use of forward error correction coding. The presentation ends with consideration of spread spectrum systems in the presence of other users.