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• Examples of Communication Systems/Radio Interface
  |Nächste Seite=Voice Coding ...n occupy either an entire physical channel or only a portion of a physical channel and fall into two categories:
  33 KB (5,164 words) - 18:48, 20 February 2023
• Examples of Communication Systems/General Description of ISDN
  ...\text{64 kbit/s}$  each and one  $\text{D channel}$  ("data channel")  with  $\text{16 kbit/s}$, ...thirty  "B channels"  and one signaling and one synchronization channel,  each at  $\text{64 kbit/s}$.
  28 KB (4,382 words) - 18:31, 16 November 2022
• Channel Coding/Error Correction According to Reed-Solomon Coding
  |Vorherige Seite=Reed-Solomon Decoding for the Erasure Channel ...Channel"]]  we consider a transmission system with Reed–Solomon coding characterized by the two code parameters  $n=2^m-1$  and  $k
  46 KB (6,739 words) - 13:43, 24 November 2022
• Digital Signal Transmission/Decision Feedback
  ...tion_of_Channel_Distortion_and_Equalization#Ideal_channel_equalizer|"Ideal channel equalizer"]]. ...er filter  $H_{\rm E}(f)$  is composed of the (fictitious) ideal channel equalizer  $1/H_{\rm K}(f)$  and a Gaussian low-pass filter &nbs
  16 KB (2,668 words) - 17:26, 24 August 2022
• Theory of Stochastic Signals/From Random Experiment to Random Variable
  ...y or multi-level digital signal,  but equally for the emulation of a channel with statistically independent errors by a digital model,  for example #In coding theory,  it is useful to map  $\{ \text{L,  H}\}$  to&n
  14 KB (2,155 words) - 18:09, 6 February 2024
• Biographies and Bibliographies/Letters M - Q
  *McCullough, R.H.: The Binary Regenerative Channel. In: Bell Syst. Techn. J. (47), 1968. *McEliece, R.J.: The Theory of Information Theory and Coding. Massachusetts: Addison-Wesley, 1977.
  5 KB (660 words) - 18:34, 19 July 2023
• Examples of Communication Systems/General Description of UMTS
  #the  »speech and channel coding«  used in UMTS, ...een  $\text{2020 MHz}$  and  $\text{2025 MHz}$  $($one channel$)$.
  25 KB (3,834 words) - 15:00, 13 March 2023
• Modulation Methods/Linear Digital Modulation
  ...bsp; and includes the functions sampling,  quantization,  binary coding and signal shaping.  * Let the channel be initially ideal, characterized by  
  26 KB (4,146 words) - 15:47, 13 January 2023
• Modulation Methods/Pulse Code Modulation
  *transmitting this signal over the channel,  where the receiver-side signal  $v_{\rm C}(t)$  is also bi ...sed of three function blocks  »'''Sampling - Quantization - PCM Coding'''«  which will be described in more detail in the next sections
  44 KB (7,142 words) - 15:29, 23 January 2023
• Digital Signal Transmission/Carrier Frequency Systems with Coherent Demodulation
  [[File:EN_Dig_T_4_4_S2_v2.png|right|frame|AWGN channel model for complex signals|class=fit]] *The phase delay of the channel  $($i.e. a phase function increasing linearly with frequency$)$ 
  33 KB (5,393 words) - 12:04, 17 November 2022
• Channel Coding/Distance Characteristics and Error Probability Bounds
  # &nbsp; Also diagram&nbsp; $\rm (B)$&nbsp; omits the color coding.&nbsp; The information bit&nbsp; $u_i = 1$&nbsp; is now denoted by&nbsp; $U ...p; we proceed as in&nbsp; [Liv10]<ref name='Liv10'>Liva, G.:&nbsp; Channel Coding.&nbsp; Lecture manuscript, Chair of Communications Engineering, TU Munich a
  34 KB (5,316 words) - 19:24, 20 December 2022
• Examples of Communication Systems/General Description of DSL
  ...ne network and by cleverly combining different transmission techniques and coding methods. ...upstream"$)$. <br>The data rate is dynamically negotiated depending on the channel state.
  18 KB (2,682 words) - 23:01, 21 March 2023
• Modulation Methods/Quadrature Amplitude Modulation
  ...wo data streams can be transmitted independently via the same transmission channel.&nbsp; The diagram shows the general circuit schematic. ...nbsp;[[Digital_Signal_Transmission/Redundancy-Free_Coding|"Redundancy-free Coding"]]&nbsp; also apply here.
  27 KB (4,342 words) - 15:50, 13 January 2023
• Examples of Communication Systems/xDSL as Transmission Technology
  ...$($"Discrete Multitone Transmission"$),$&nbsp; the uplink and the downlink channel are divided into&nbsp; $N_{\rm Up}$&nbsp; resp.&nbsp; $N_{\rm Down}$&nbsp; ...ing_with_4B3T_Codes#ACF_and_PSD_of_the_4B3T_codes|"ISDN spectrum with 4B3T coding"]].&nbsp; Above $\text{120 kHz}$&nbsp; the ISDN spectrum is completely supp
  35 KB (5,461 words) - 17:05, 24 April 2023
• Information Theory/Differential Entropy
  #the &nbsp;&raquo;capacity of the AWGN channel&laquo;&nbsp; and several such parallel Gaussian channels, #the &nbsp;&raquo;channel coding theorem&laquo;,&nbsp; one of the highlights of Shannon's information theory
  36 KB (5,684 words) - 15:29, 28 February 2023
• An e-learning project for Communications Engineering - LNTwww
  ...the graphical program interface appears, which allows to choose from four coding options and three basic transmission pulse options. Depending on the setti At the end of this file you will find the English title &raquo;The AWGN Channel &laquo; and the English summary:
  19 KB (2,918 words) - 14:56, 22 January 2024
• Information Theory/Some Preliminary Remarks on Two-Dimensional Random Variables
  *the definition and meaning of the&nbsp; &raquo;channel capacity&laquo;&nbsp; and its connection with the mutual information, *the&nbsp; &raquo;Channel Coding Theorem&laquo;,&nbsp; one of the highlights of Shannon's information theory
  33 KB (5,119 words) - 16:58, 16 February 2023
• Mobile Communications/History and Development of Mobile Communication Systems
  |Vorherige Seite=The GWSSUS Channel Model *important system components: &nbsp; speech and channel coding, interleaving, encryption,
  21 KB (3,355 words) - 15:35, 20 February 2023

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