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• Modulation Methods/General Description of OFDM
  |Vorherige Seite=Error Probability of Direct-Sequence Spread Spectrum Modulation |Nächste Seite=Implementation of OFDM Systems
  18 KB (2,900 words) - 18:31, 23 January 2023
• Mobile Communications/Physical Layer for LTE
  |Vorherige Seite=The Application of OFDMA and SC-FDMA in LTE |Nächste Seite=LTE-Advanced - a Further Development of LTE
  22 KB (3,513 words) - 15:52, 20 February 2023
• Exercise 2.6: Cyclic Prefix
  ...m shows a simplified block diagram, where the prefix used for equalization of the channel frequency response ...ccupied with the QAM symbols  $D_k$ . Because of the reservation of the lowest frequencies for ISDN and for upstream  $D_0 =$ ... $= D_{63
  7 KB (1,076 words) - 19:37, 25 March 2023
• Modulation Methods/Quadrature Amplitude Modulation
  Due to the orthogonality of cosine and  (minus)  sine,  two data streams can be transmit ...rm I$ and  $\rm Q$–components;  signal space for  $\text{16-QAM}$]]
  27 KB (4,342 words) - 15:50, 13 January 2023
• Examples of Communication Systems/xDSL as Transmission Technology
  The xDSL specifications give operators a great deal of freedom with regard to allocation. For the necessary directional separation of the xDSL signal transmission according to
  35 KB (5,461 words) - 17:05, 24 April 2023
• Mobile Communications/The Application of OFDMA and SC-FDMA in LTE
  |Vorherige Seite=Technical Innovations of LTE ...UMTS$]],  Long Term Evolution  $\rm (LTE)$  uses a variant of the OFDM concept also used by  [https://en.wikipedia.org/wiki/Wireless
  21 KB (3,302 words) - 19:15, 9 February 2023
• Channel Coding/Information Theoretical Limits of Channel Coding
  |Nächste Seite=Some Basics of Algebra *code words of length  $n$,
  27 KB (4,255 words) - 12:12, 22 November 2022
• Mobile Communications/Characteristics of UMTS
  |Untermenü=Mobile Radio Systems of the 2nd and 3rd Generation - an Overview |Vorherige Seite=Characteristics of GSM
  21 KB (3,247 words) - 18:44, 20 February 2023
• Modulation Methods/Implementation of OFDM Systems
  |Vorherige Seite=General Description of OFDM #In principle,  DFT and IDFT have the same structure.
  33 KB (5,069 words) - 18:05, 11 March 2023
• Signal Representation/Equivalent Low-Pass Signal and its Spectral Function
  The following figure shows a possible structure of a transmission system: [[File:EN_Sig_T_4_3_S1.png|right|frame|Block diagram of a band-pass transmission system]]
  35 KB (5,623 words) - 16:11, 21 June 2023
• Information Theory/AWGN Channel Capacity for Discrete-Valued Input
  ...he input and output and the stochastic noise  $N$  as the result of a mean-free Gaussian random process   ⇒   "white noise" with *With the transmission power  $P_X = σ_X^2$   ⇒   variance of the random variable  $X$,  the channel capacity equation is:
  37 KB (5,856 words) - 16:28, 28 February 2023
• Modulation Methods/Pulse Code Modulation
  |Vorherige Seite=Influence of Noise on Systems with Angle Modulation == # OVERVIEW OF THE FOURTH MAIN CHAPTER # ==
  44 KB (7,142 words) - 15:29, 23 January 2023
• Digital Signal Transmission/Redundancy-Free Coding
  ...ignal  $c(t)$  corresponds to the bit duration  $T_q$  of the source signal,  which is assumed to be binary and redundancy-free. ...  of bit duration  $T_q$  is assigned a one-to-one sequence of  $m_c$  encoder symbols from an alphabet with encoder symbol se
  26 KB (4,161 words) - 16:01, 23 January 2023
• Examples of Communication Systems/Methods to Reduce the Bit Error Rate in DSL
  |Nächste Seite=General Description of GSM ==Transmission properties of copper cables ==
  36 KB (5,652 words) - 16:31, 24 April 2023
• Modulation Methods/Non-Linear Digital Modulation
  ==Properties of non-linear modulation methods== ...ear modulation method'''«  is present if any linear combination of signals at modulator input leads to a corresponding linear combination at i
  28 KB (4,482 words) - 16:21, 17 January 2023