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Digital Signal Transmission/Symbolwise Coding with Pseudo-Ternary Codes
In symbolwise coding,  each incoming source symbol  $q_\nu$  generates an encoder Typical for symbolwise coding is that

15 KB (2,474 words) - 00:47, 23 March 2023
Mobile Communications/Characteristics of GSM
...divided by time division multiplexing  $\rm (TDMA)$.  Each FDMA channel is divided into TDMA frames, which each comprise  $N_{\rm T} = 8$&nbsp ...y the rate  $R_{\rm net} = 22.8 \ \rm kbit/s$.   Without channel coding, the data rate would be only  $13 \ \rm kbit/s$.<br>

17 KB (2,642 words) - 18:41, 20 February 2023
Channel Coding/Basics of Convolutional Coding
...lias $\text{Peter Elias}$]  [Eli55]<ref name='Eli55'>Elias, P.:  Coding for Noisy Channels.  In:  IRE Conv. Rec. Part 4, pp. 37-47, 1955. ...R algorithm}$]],  which can process reliability information about the channel   ⇒   "soft decision input"  and provide reliability in

17 KB (2,604 words) - 18:02, 7 December 2022
Biographies and Bibliographies/LNTwww members from LNT
...ant and expert for the books  "Information Theory" and  "Channel Coding".  ...29|Prof. Kramer]].   His research was mainly concerned with algebraic coding theory, and in particular with the properties of bivariate interpolation-ba

25 KB (3,806 words) - 12:43, 13 January 2022
Modulation Methods/Further OFDM Applications
*The effects of such a frequency-selective channel can be counteracted by extending the guard interval.  However,  o ...duration  $T_{\rm G}$,  there are narrow limits to the tolerable channel impulse response.

15 KB (2,350 words) - 18:36, 23 January 2023
Examples of Communication Systems/ISDN Basic Access
...ignaling channel"  resp.  "data channel"   ⇒   "D channel"  with  $\text{16 kbit/s}$. ⇒   A bearer channel is used for the transmission of user information  $($voice,  text

37 KB (6,055 words) - 18:39, 16 November 2022
Biographies and Bibliographies/Chair holders of the LNT since 1962
...g and information technology" whose numerous works in the field of network coding were of central importance for the further development of mobile communicat ...on Innovation Award for Research for his "seminal work" on information and coding theory.

10 KB (1,492 words) - 18:56, 18 April 2023
Channel Coding/Some Basics of Algebra
|Vorherige Seite=Information Theoretical Limits of Channel Coding *the error correction of such a code at the  »binary ersaure channel«   $\rm (BEC)$,

21 KB (3,210 words) - 16:09, 19 November 2022
Digital Signal Transmission/Optimal Receiver Strategies
*In this model,  any channel distortions are added to the transmitter and are thus already included in t ...for the necessary noise power limitation and – in the case of strong channel distortions – for sufficient pre-equalization of the resulting inters

23 KB (3,666 words) - 14:16, 11 July 2022
Theory of Stochastic Signals/Binomial Distribution
...; It allows the calculation of the residual error probability in blockwise coding. If one transmits blocks each of  $I =10$  binary symbols over a channel

9 KB (1,397 words) - 18:32, 7 February 2024
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