Difference between revisions of "Modulation Methods"

Latest revision as of 12:25, 3 April 2023

Objective of modulation and demodulation: Frequency and time division multiplexing. Ideal, distortion-free and distorting system. Quality criteria.
Amplitude modulation and associated demodulators: Double sideband– and single sideband modulation. Envelope and synchronous demodulation.
Angle modulation and associated demodulators: Phase modulation and frequency modulation. Signal-to-noise ratio with angle modulation.
Digital modulation techniques: Pulse code modulation, Linear modulation techniques $($ASK, BPSK, BPSK$)$, Non-linear modulation $($FSK, MSK, GMSK$)$.
Multiple access methods: FDMA, TDMA, CDMA. Multiplexers and demultiplexers. CDMA spread sequences. PN modulation: Principle and realization.

Notes:

The description builds on the books »Signal Representation« and »Linear and Time Invariant Systems«.

Knowledge of »Theory of Stochastic Signals« is helpful, but not essential.

Further details on digital signal transmission $($BER computation, system optimisation, ...$)$ are covered in the book »Digital Signal Transmission«.

⇒ Here first an »content overview« by means of the »five main chapters« with a total of »23 individual chapters« and »192 sections«.

Content

General Description

Amplitude Modulation and Demodulation

Angle Modulation and Demodulation

Digital Modulation Methods

Multiple Access Methods

Exercises and multimedia

In addition to these theory pages, we also offer exercises and multimedia modules on this topic, which could help to clarify the teaching material:

$(1)$ $\text{Exercises}$

$(2)$ $\text{Learning videos}$

$(3)$ $\text{Applets}$

Further links

$(4)$ $\text{Bibliography}$

$(5)$ $\text{Impressum}$

@@ Line 5: / Line 5: @@
 # Amplitude modulation and associated demodulators:&nbsp; Double sideband&ndash; and single sideband modulation.&nbsp; Envelope and synchronous demodulation.
 # Angle modulation and associated demodulators:&nbsp; Phase modulation and frequency modulation.&nbsp; Signal-to-noise ratio with angle modulation.
-# Digital modulation techniques:&nbsp; Pulse code modulation,&nbsp; Linear modulation techniques&nbsp; $($ASK,&nbsp; BPSK,&nbsp; BPSK$)$,&nbsp; Nonlinear modulation&nbsp; $($FSK,&nbsp; MSK,&nbsp; GMSK$)$.
+# Digital modulation techniques:&nbsp; Pulse code modulation,&nbsp; Linear modulation techniques&nbsp; $($ASK,&nbsp; BPSK,&nbsp; BPSK$)$,&nbsp; Non-linear modulation&nbsp; $($FSK,&nbsp; MSK,&nbsp; GMSK$)$.
-# Multiple access methods:&nbsp; FDMA, TDMA, CDMA.&nbsp; Multiplexers and demultiplexers.&nbsp; CDMA spread sequences.&nbsp; PN modulation:&nbsp; Principle and realisation.
+# Multiple access methods:&nbsp; FDMA, TDMA, CDMA.&nbsp; Multiplexers and demultiplexers.&nbsp; CDMA spread sequences.&nbsp; PN modulation:&nbsp; Principle and realization.
 <u>Notes:</u>
-*The description builds on the books&nbsp; "[[Signal Representation]]"&nbsp; and &nbsp;"[[Linear_and_Time_Invariant_Systems]]".&nbsp;
+*The description builds on the books&nbsp; &raquo;[[Signal Representation]]&laquo;&nbsp; and &nbsp;&raquo;[[Linear_and_Time_Invariant_Systems]]&laquo;.&nbsp;
-*Knowledge of&nbsp; "[[Theory_of_Stochastic_Signals]]"&nbsp; is helpful,&nbsp; but not essential.
+*Knowledge of&nbsp; &raquo;[[Theory_of_Stochastic_Signals]]&laquo;&nbsp; is helpful,&nbsp; but not essential.
-*Further details on digital signal transmission&nbsp; $($BER computation,&nbsp; system optimisation, ...$)$&nbsp; are covered in the book &nbsp;"[[Digital Signal Transmission]]"&nbsp;.
+*Further details on digital signal transmission&nbsp; $($BER computation,&nbsp; system optimisation, ...$)$&nbsp; are covered in the book &nbsp;&raquo;[[Digital Signal Transmission]]&laquo;.
@@ Line 83: / Line 83: @@
-In addition to these theory pages, we also offer exercises and multimedia modules that could help to clarify the teaching material:
-*[https://en.lntwww.de/Category:Information_Theory:_Exercises $\text{Exercises}$]
-*[[LNTwww:Learning_videos_to_"Information_Theory"|$\text{Learning videos}$]]
-*[[LNTwww:Applets_to_"Information_Theory"|$\text{Applets}$]]
-<br><br>
-$\text{Other links:}$
-$(1)$&nbsp; &nbsp; [[LNTwww:Bibliography_to_"Information_Theory"|$\text{Bibliography to the book}$]]
-$(2)$&nbsp; &nbsp; [[LNTwww:General_notes_about_Information_Theory|$\text{General notes about the book}$]] &nbsp; (authors,&nbsp; other participants,&nbsp; materials as a starting point for the book,&nbsp; list of sources)
-<br><br>
-In addition to these theory pages,&nbsp; we also offer tasks and multimedia modules on this topic,&nbsp; which could help to clarify the teaching material:
-*[https://en.lntwww.de/Category:Modulation_Methods:_Exercises  $\text{Exercises}$]
-*[[LNTwww:Learning_Videos_to_"Modulation_Methods"|$\text{Learning videos}$]]
-*[[LNTwww:LNTwww:Applets_to_"Modulation_Methods"|$\text{Applets}$]]&nbsp;
-<br><br>
-$\text{Further links:}$
-<br><br>
-$(1)$&nbsp; &nbsp; [[LNTwww:Bibliography_to_"Modulation_Methods"|$\text{Bibliography for the book}$]]
-$(2)$&nbsp; &nbsp; [[LNTwww:General_notes_about_"Modulation_Methods"|$\text{General notes about the book}$]] &nbsp; (authors,&nbsp; other participants,&nbsp; materials as a starting point for the book,&nbsp; list of sources)
-<br><br>
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