Abstract
A spread-spectrum signal is one with an extra modulation that expands the signal bandwidth greatly beyond what is required by the underlying coded-data modulation. Spread-spectrum communication systems are useful for suppressing interference, making secure communications difficult to detect and process, accommodating fading and multipath channels, and providing a multiple-access capability. Spread-spectrum signals cause relatively minor interference to other systems operating in the same spectral band. The most practical and dominant spread-spectrum systems are direct-sequence and frequency hopping systems.
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Torrieri, D. (2011). Direct-Sequence Systems. In: Principles of Spread-Spectrum Communication Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9595-7_2
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DOI: https://doi.org/10.1007/978-1-4419-9595-7_2
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