Mobile Communications/History and Development of Mobile Communication Systems - Revision history

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@@ Line 216: / Line 216: @@
 &raquo;'''Distribution of mobile local loops on the individual continents'''&laquo;&nbsp; (figures from 2008 and 2009)
-[[File:EN_Mob_T_3_1_S5c.png|right|frame|Mobile subscriber lines (2008/2009) in the different continents '''KORREKTUR: Middle East'''|class=fit]]
+[[File:EN_Mob_T_3_1_S5c_v3.png|right|frame|Mobile subscriber lines (2008/2009) in the different continents|class=fit]]
 *The most interesting market for mobile communication systems is clearly Asia. In 2009, 44% of all participants were already registered there and the percentage has certainly risen further in the meantime.<br>

@@ Line 23: / Line 23: @@
 *important system components: &nbsp; speech and channel coding, interleaving, encryption,
 *the multiple access methods FDMA/TDMA (GSM) and CDMA (UMTS),
-*the modulation procedures '''KORREKTUR: methods''' GMSK (GSM) and OFDM (UMTS),
+*the modulation methods GMSK (GSM) and OFDM (UMTS),
 *further developments HSCSD, GPRS, EDGE (GSM) as well as HSDPA, HSUPA (UMTS).

@@ Line 225: / Line 225: @@
-== Exercices for chapter==
+== Exercices for the chapter==
 <br>
 [[Aufgaben:Exercise 3.1: Development of the Mobile Network]]

@@ Line 216: / Line 216: @@
 &raquo;'''Distribution of mobile local loops on the individual continents'''&laquo;&nbsp; (figures from 2008 and 2009)
-[[File:EN_Mob_T_3_1_S5c.png|right|frame|Mobile subscriber lines (2008/2009) in the different continents|class=fit]]
+[[File:EN_Mob_T_3_1_S5c.png|right|frame|Mobile subscriber lines (2008/2009) in the different continents '''KORREKTUR: Middle East'''|class=fit]]
 *The most interesting market for mobile communication systems is clearly Asia. In 2009, 44% of all participants were already registered there and the percentage has certainly risen further in the meantime.<br>

@@ Line 171: / Line 171: @@
 These mobile communications standards, which will be the latest in 2011, are discussed in detail in the fourth main chapter of this book&nbsp; [[Mobile_Communications|"Mobile Communications"]].&nbsp; They belong to the fourth generation of mobile communications systems&nbsp; $\rm (4G)$.&nbsp; Already at this time it was foreseeable that further generations would follow.<br>
-But before that, we will deal in a highly compressed form wit the following topics(details can be found in the book "Examples of Communication Systems")
+But before that, we will deal in a highly compressed form with the following topics (details can be found in the book "Examples of Communication Systems")
 *the&nbsp; [[Mobile_Communications/Similarities between_GSM_and_UMTS| $\text{similarities between GSM and UMTS}$]],<br>

@@ Line 174: / Line 174: @@
 *the&nbsp; [[Mobile_Communications/Similarities between_GSM_and_UMTS| $\text{similarities between GSM and UMTS}$]],<br>
-*the&nbsp; [[Mobile_Communications/Characteristics_of_GSM#System_Architecture_and_Base_Units_of_GSM|$\text{characteristics of GSM}$]], and<br>
+*the&nbsp; [[Mobile_Communications/Characteristics_of_GSM#System_architecture_and_basic_units_of_GSM|$\text{characteristics of GSM}$]], and<br>
-*the&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#Requirements_of_the_third-generation_mobile_systems_of_the_third_generation|$\text{characteristics of UMTS}$]].<br><br>
+*the&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#Requirements_for_third_generation_mobile_radio_systems|$\text{characteristics of UMTS}$]].<br><br>
 In the next section, we present some figures published on the Internet to illustrate the success of digital mobile communications in the years up to 2009, with a decline in GSM and a disproportionate increase in UMTS and LTE.

@@ Line 129: / Line 129: @@
 *'''1992''' &ndash;'''1995''' &nbsp; EU programme "RACE&ndash;2" with focus "Development of system concepts", based on the results of "RACE&ndash;1".<br><br>
-First considerations on the standard&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#The_IMT-2000_standard|$\text{IMT&ndash;2000}$]]&nbsp; ("International Mobile Telecommunications at 2000 MHz") were made by the ITU in '''1992'''.&nbsp; From this, with&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#System_architecture_and_Base_Units_at_UMTS|$\text{UMTS}$]]&nbsp; ("Universal Mobile Telecommunications Systems") the best known mobile radio system of the third generation (3G) developed.&nbsp; However, a number of intermediate steps were still necessary before it could be launched in Germany ('''2004'''):
+First considerations on the standard&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#The_IMT-2000_standard|$\text{IMT&ndash;2000}$]]&nbsp; ("International Mobile Telecommunications at 2000 MHz") were made by the ITU in '''1992'''.&nbsp; From this, with&nbsp; [[Mobile_Communications/Characteristics_of_UMTS#System_architecture_and_basic_units_for_UMTS|$\text{UMTS}$]]&nbsp; ("Universal Mobile Telecommunications Systems") the best known mobile radio system of the third generation (3G) developed.&nbsp; However, a number of intermediate steps were still necessary before it could be launched in Germany ('''2004'''):
 *'''1996''' &nbsp; Foundation of the UMTS Forum in Zurich &ndash; renaming of the planned European standard "W&ndash;CDMA" to "UMTS".

@@ Line 6: / Line 6: @@
 }}
-== OVERVIEW OF THE THIRD MAIN CHAPTER ==
+== # OVERVIEW OF THE THIRD MAIN CHAPTER # ==
 <br>