August 2005
Intermediate to advanced
240 pages
4h 32m
English
Content preview from Ultra-Wideband Communications: Fundamentals and ApplicationsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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2.1. Introduction
As explained in Chapter 1, a variety of electromagnetic narrow pulses, such as Gaussian, monocycle, Hermite, wavelet, and others, can be used for various UWB applications. The selection of the pulse shape is driven primarily by the desirable frequency band that the pulse is to occupy. However, the main characteristics of all pulses used in UWB systems are high-peak power and fast-rise time, typically less than 1 nanosecond. The generation of subnanosecond pulses with large amplitudes plays a critical role in UWB communications. Pulse generators are used not only in UWB transmitters but also in most UWB receivers for template generation to perform the correlation operation on the received pulses—as we'll see in Chapter 3.
Although ...
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