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Raised-Cosine Filter
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Geliefert zwischen Mi., 26.11.2025 und Do., 27.11.2025
Details
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The raised-cosine filter is a filter frequently used for pulse-shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its name stems from the fact that the non-zero portion of the frequency spectrum of its simplest form ( = 1) is a cosine function, ''raised'' up to sit above the f (horizontal) axis The raised-cosine filter is an implementation of a low-pass Nyquist filter, i.e., one that has the property of vestigial symmetry. This means that its spectrum exhibits odd symmetry about frac{1}{2T}, where T is the symbol-period of the communications system. Its frequency-domain description is a piecewise function, given by: and characterised by two values; , the roll-off factor, and T, the reciprocal of the symbol-rate. The impulse response of such a filter is given by:
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130991159
- Genre Technik
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Anzahl Seiten 100
- Herausgeber Betascript Publishing
- Größe H220mm x B220mm
- EAN 9786130991159
- Format Fachbuch
- Titel Raised-Cosine Filter
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