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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1.7. Differences Between UWB and Spread Spectrum
Although UWB is a growing technology and more information on its concepts and capabilities becomes available every day, many misconceptions are associated with its name. A good number of people confuse UWB communications with wideband spread-spectrum techniques. Even though both UWB and spread-spectrum techniques have their origins in military secure communications, we need to clarify a fundamental difference between the two. For this reason, it is important to briefly review two commonly used spread-spectrum techniques—DSSS and FHSS.
1.7.1. Direct-Sequence Spread Spectrum
In direct-sequence spread spectrum (DSSS), a pseudorandom code is used to spread each data bit with a large number of chips, ...
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