Examples of Communication Systems

Brief summary

In the last book of our  »e-learning series  $\rm LNTwww$«  it is shown by  »realized and in their time commercially successful messaging systems«  that the theoretical foundations of the previous eight books are quite relevant for practice.

Here are some keywords from the book contents:

1. $\rm ISDN$  $($"$\rm I$ntegrated $\rm S$ervices $\rm D$igital $\rm N$etwork"$)$:  Objectives & characteristics,  Services & features,  Basic access & primary multiplex access,  Broadband ISDN.
2. $\rm xDSL$  $($"$\rm D$igital $\rm S$ubscriber $\rm L$ine"$)$:  Historical development and standardizations,  Reference model,  ADSL, VDSL and HDSL,  WAM and DMT realization.
3. $\rm GSM$  $($"Global System for Mobile Communications"$)$:  Second generation mobile communications system,  based on FDMA,  TDMA and GMSK.  Voice KORREKTUR: Speech coding.
4. $\rm UMTS$  $($"$\rm U$niversal  $\rm M$obile  $\rm T$elecommunications  $\rm S$ystem"$)$:  Third-generation mobile communications system, based on CDMA.  Further development HSPA.

Notes:

• The basics are no longer treated in detail here,  rather, reference is made to the relevant reference books.

• GSM and UMTS also show the transience of technological developments.  In some countries, GSM and UMTS are already switched off after a good 20 years.

⇒   Here first a  »contents overview«  based on the  »four main chapters«  with a total of  »17 individual chapters«  and  »164 sections«.

Contents

ISDN - Integrated Services Digital Network

• General Description of ISDN
• ISDN Basic Access
• ISDN Primary Multiplex Connection
• Further Developments of ISDN

DSL – Digital Subscriber Line

• General Description of DSL
• xDSL Systems
• xDSL as Transmission Technology
• Methods to Reduce the Bit Error Rate in DSL

GSM – Global System for Mobile Communications

• General Description of GSM
• Radio Interface
• Speech Coding
• Entire GSM Transmission System
• Further Developments of the GSM

UMTS – Universal Mobile Telecommunications System

• General Description of UMTS
• UMTS Network Architecture
• Telecommunications Aspects of UMTS
• Further Developments of UMTS

Exercises and multimedia modules

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

$(4)$    $\text{Bibliography}$

$(5)$    $\text{Impressum}$

$\text{Hinweise zu den Autoren und den Materialien, von denen bei der Erstellung des Buches ausgegangen wurde.}$