LNTwww:Information

Welcome to the English version of LNTwww

$\text{https://en.lntwww.de}$  is an e-learning tutorial for Communications Engineering with nine didactic multimedia textbooks including exercises with solutions, learning videos, and interactive applets.  It is offered by the  Chair of Communications Engineering  $\rm (LNT)$  of  Technical University of Munich  $\rm (TUM)$.  It is freely accessible,  registration is not necessary and no system requirements are needed.

The German-language version   $\text{https://www.lntwww.de}$   ⇒   "$\rm L$erntutorial für $\rm N$achrichten$\rm T$echnik im $\rm w$orld $\rm w$ide $\rm w$eb"  was created between 2001 - 2021 by members of our Institute.  The toolbar entry  "Deutsch"  takes you to the German original.

In the spring of 2020, we started the English translation.  The interim status in March 2021 is:

• The book  $\text{Mobile Communications}$  is completed (Book & Exercises).
• Currently in progress are  $\text{Signal Representation}$  (98%)  and  $\text{Information Theory}$  (20%).
• The other six textbooks have not yet been started.

$\rm LNTwww$  is based on the management software  MediaWiki,  known by the encyclopedia „WIKIPEDIA”.  On the page  $\text{About LNTwww}$  you can find a kind of  "User Manual"  about our e-learning tutorial.  Corresponding links to this file are provided at the bottom of each page between  Privacy policy  and  Disclaimers.

Since we have only translated 30% of the German version so far, there are still some limitations regarding the already finished books, which you can see in the list below.

List of current restrictions for the English version

1. Links in not yet translated books lead to the desired target, but still with German text.
2. The wiki description files of the applets are partly still in German.  The actual applets themselves are in English.
3. All tutorial videos are in German. Due to the large amount of changes, this will stay the same.
4. All variable names of the German version were taken over.  Otherwise countless equations would have had to be adapted.
      For example:  $s_{\rm TP}(t)$  designates the transmission signal in the equivalent low-pass range  (German: Tiefpass,  $\rm TP)$.

If you notice any deficiencies regarding content, presentation or handling, we would appreciate it if you let us know by e-mail at  "LNTwww (at) LNT.ei.tum.de".

$\text{Have fun and good luck!}$   We would be pleased if we could arouse your interest in our  $\rm LNTwww$.  We wish you a good learning success.

$\text{Gerhard Kramer}$   –   $\text{Francisco Javier Garcia Gomez}$   –   $\text{Günter Söder}$   –   $\text{Tasnád Kernetzky}$

Munich, March 2021