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Mobile Communications/Characteristics of UMTS
...d between  $\text{2020}$  and  $\text{2025 MHz}$  (one channel) are reserved.<br> ...; The tasks of a "Node B" include data rate matching, data and channel (de)coding, interleaving, and modulation or demodulation.  Each base station can

21 KB (3,247 words) - 18:44, 20 February 2023
Channel Coding/Definition and Properties of Reed-Solomon Codes
|Nächste Seite=Reed-Solomon Decoding for the Erasure Channel == Coding principle and code parameters ==

30 KB (4,327 words) - 21:46, 23 November 2022
Examples of Communication Systems/Telecommunications Aspects of UMTS
==Improvements regarding speech coding == #independence from channel conditions and network load,

40 KB (6,238 words) - 18:15, 20 April 2023
Examples of Communication Systems/Methods to Reduce the Bit Error Rate in DSL
...and achievable transmission rate can be illustrated very well by Shannon's channel capacity formula: ...Information_Theory/AWGN_Channel_Capacity_for_Continuous-Valued_Input|"AWGN Channel Capacity for Continuous-Valued Input"]].

36 KB (5,652 words) - 16:31, 24 April 2023
Examples of Communication Systems/Further Developments of ISDN
...ifier"  $\rm (VCI)$  ⇒   $16$  bits for virtual channel identification, [[Aufgaben:Exercise_1.7:_Coding_for_B-ISDN|Exercise 1.7: Coding for B-ISDN]]

9 KB (1,443 words) - 13:13, 10 November 2022
Channel Coding/Decoding of Convolutional Codes
A significant advantage of convolutional coding is that there is a very efficient decoding method for this in the form of t ..._Structures#Binary_Symmetric_Channel_.E2.80.93_BSC|$\text{Binary Symmetric Channel}$]]  $\rm (BSC)$  holds   $y_i ∈ \{0, 1\}$,  so t

43 KB (6,415 words) - 16:53, 23 January 2023
Examples of Communication Systems/General Description of GSM
...not or only briefly addressed in other chapters,  e.g.  "speech coding"  and  "burst structure". #the main  »speech coding schemes«  for data compression,

22 KB (3,351 words) - 15:58, 20 February 2023
Channel Coding/The Basics of Turbo Codes
The resulting rate of the concatenated coding system is thus  $R = 1/4$.  ..._v2.png|right|frame|Bit and block error probability of turbo codes at AWGN channel]]

30 KB (4,517 words) - 16:58, 23 January 2023
Channel Coding/General Description of Linear Block Codes
|Untermenü=Binary Block Codes for Channel Coding ...ode is also considered exemplarily in the next sections,  because the coding results are well interpretable.<br>

37 KB (5,068 words) - 11:32, 22 November 2022
Theory of Stochastic Signals/Generation of Discrete Random Variables
...gher than the bit frequency.  This offers the possibility of multiple channel utilization.  Since the same sequence must be added in phase at the re $(2)$  As detailed in the book  [[Channel_Coding|»Channel Coding«]],  a polynomial  $G(D)$  of degree  $L$  i

12 KB (1,843 words) - 19:39, 8 February 2024
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