Jamming

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. For more complete treatments of spread spectrum, the reader is referred to [1, 2, 3].

Simplifying a complex topic to help expand your abilities as a guitar player and musician

An easy, practical guide to wireless networks, which allow users to roam wireless-enabled locations without being restricted by cables Shows step by step what it takes to plan a wireless network, set it up, make it work, and keep it safe Along the way, expert authors Davis and Lewis explain how to perform a site survey and explore issues such as selecting the right standard, mode, access point, channel, and antenna Explains how to install clients, set up roaming, and guard against risks and threats such as war driving, jamming, hijacking, and man-in-the-middle attacks Contains useful information on IEEE wireless standards, security vulnerabilities, administration tools, and places to connect while on the road

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