Title Details: | |
Spectral Characteristics of Digital Waveforms – Nyquist Signaling |
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Authors: |
Mitrou, Nikolaos |
Reviewer: |
Karampogias, Serafeim |
Subject: | ENGINEERING AND TECHNOLOGY > > > |
Description: | |
Abstract: |
The spectral characteristics of pulse trains (digital waveforms) are studied. For static amplitude-modulated pulse sequences, the power spectral density depends on: (a) the Fourier transform of the (deterministic) pulses and (b) the autocorrelation of the discrete sequence of amplitudes. Digital amplitude modulation (Amplitude Shift Keying - ASK), also called Pulse Amplitude Modulation (PAM), Phase modulation (Phase Shift Keying - PSK) and Quadrature Amplitude Modulation (QAM) fall directly into this category. For the last two the amplitude sequences are, obviously, complex numbers. For white (completely random) amplitude sequences, the spectral characteristics of the pulse trains are determined solely by the shape and duration of the pulses used.
Also presented and analyzed in this chapter are pulse shaping filters that minimize the required bandwidth while ensuring zero interference between pulses in the sequence (Nyquist signaling). A similar class of filters allows controlled interference, which can be removed at the receiver (partial response signaling).
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Linguistic Editors: |
Konachos, Dimitrios |
Technical Editors: |
Stavrou, Periklis Tsionis, Elias |
Type: |
Chapter |
Creation Date: | 2015 |
Item Details: | |
License: |
Attribution - NonCommercial - ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
Handle | http://hdl.handle.net/11419/6048 |
Bibliographic Reference: | Mitrou, N. (2015). Spectral Characteristics of Digital Waveforms – Nyquist Signaling [Chapter]. In Mitrou, N. 2015. Digital Communications [Undergraduate textbook]. Kallipos, Open Academic Editions. https://hdl.handle.net/11419/6048 |
Language: |
Greek English |
Is Part of: |
Digital Communications |
Publication Origin: |
Kallipos, Open Academic Editions |