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Exercise 4.5: Locality Curve for DSB-AM
{{quiz-Header|Buchseite=Signal_Representation/Equivalent Low-Pass Signal and its Spectral Function ...le:P_ID751__Sig_A_4_5_neu.png|250px|right|frame|Spectrum of the analytical signal]]

8 KB (1,230 words) - 15:22, 18 January 2023
Signal Representation/Principles of Communication
|Vorherige Seite=Signal Representation |Nächste Seite=Signal Classification

17 KB (2,614 words) - 19:56, 6 June 2023
Exercise 1.2: Distortions? Or no Distortion?
...9__Mod_A_1_2.png|right|frame|Observed sink signals for the <br>given input signal   $q(t)$]] ...tortions they cause. For this purpose, the cosine-shaped test signal with signal frequency $f_{\rm N} = 1\text{ kHz}$  is applied to the input of each

6 KB (972 words) - 18:16, 10 April 2022
Modulation Methods/Further AM Variants
[[File:EN_Mod_T_2_5_S1.png|right|frame|Spectrum  (of the analytical signal)  for vestigial sideband amplitude modulation]] In this schematic representation,  one recognizes:

8 KB (1,275 words) - 11:52, 13 January 2023
Exercise 3.6: Even and Odd Time Signals
....png|250px|right|frame|"Wedge function" as well as an even and an odd time signal]] *For the first two subtasks use the signal parameters  $A_u = 1\,\text{V}$  and  $T = 1\,\text{ms}$.

6 KB (937 words) - 15:22, 27 April 2021
Mobile Communications/General Description of Time Variant Systems
...tem}$  with the signal  $s(t)$  at the input and the output signal  $r(t)$.   For the sake of simplicity, let  $s(t)$  and ...verse Fourier transform}$]]  of  $H(f)$.    The output signal results from the convolution:

10 KB (1,542 words) - 15:41, 29 January 2023
Theory of Stochastic Signals/Uniformly Distributed Random Variables
$\text{Example 1:}$  The graph shows two signal waveforms with uniform amplitude distribution. ...given.  Rather,  this sawtooth signal represents a deterministic signal.}}

11 KB (1,638 words) - 19:01, 20 February 2024
Modulation Methods/Direct-Sequence Spread Spectrum Modulation
...itter-side carrier signal  $z(t)$  and the receiver-side carrier signal   $z_{\rm E}(t) =2\cdot z(t)$  are omitted. ...;$z(t)$  and AWGN noise, characterized by the additive Gaussian noise signal  $n(t)$.  The second interference component  (interference f

13 KB (2,071 words) - 17:13, 19 January 2023
Physical Signal & Equivalent Lowpass Signal
...tps://www.lntwww.de/Applets:Physikalisches_Signal_%26_%C3%84quivalentes_TP-Signal '''English Applet with German WIKI description'''] ...uivalent low-pass signal $x_{\rm TP}(t)$. It is assumed that the band-pass signal $x(t)$ has a frequency-discrete spectrum $X(f)$:

24 KB (4,188 words) - 17:04, 13 April 2023
Modulation Methods/Single-Sideband Modulation
...lated signal  $s(t)$  requires twice the bandwidth of the source signal  $q(t)$. In this representation,  one can see:

14 KB (2,244 words) - 14:43, 18 January 2023
Exercise 1.4: Low-Pass Filter of 2nd Order
..."  were described in the frequency domain.  Now, the time domain representation is elaborated on. The circuit with the input signal  $x(t)$  and the output signal  $y_1(t)$  is a low-pass filter of first order with frequency res

8 KB (1,275 words) - 01:51, 19 July 2021
Exercise 4.4: Pointer Diagram for DSB-AM
[[File:P_ID718__Sig_A_4_4.png|250px|right|frame|Spectrum of the analytical signal]] We assume a cosine-shaped source signal  $q(t)$  with

8 KB (1,301 words) - 15:29, 7 May 2021
Exercise 2.8: Asymmetrical Channel
[[File:P_ID1038__Mod_A_2_8.png|right|frame|Equivalent low-pass signal <br>in the complex plane]] ...{\rm N}$  is double-sideband amplitude modulated.  The modulated signal is given by:

8 KB (1,290 words) - 17:30, 31 March 2022
Exercise 5.7Z: Matched Filter - All Gaussian
+ The signal component  $d_{\rm S}(T_\text{D, opt}\hspace{-0.05cm})$  is small *In logarithmic representation,  the following result is obtained:

4 KB (699 words) - 15:56, 21 February 2022
Exercise 3.1Z: Hilbert Transform
...etermine the (complex) analytical signal corresponding to a real band-pass signal. ...]  and  [[Signal_Representation/Calculating_With_Complex_Numbers#Representation by magnitude and phase|Euler's theorem]] :

7 KB (1,083 words) - 17:45, 9 October 2021
Modulation Methods/General Description of OFDM
*Instead of a broadband,  strongly modulated signal,  a large number of narrowband,  mutually orthogonal subcarriers ...t data rates for the subcarriers.  This means that a high-rate source signal must be split into several signals of significantly lower symbol rate for t

18 KB (2,900 words) - 18:31, 23 January 2023
Graphical Convolution
For the output signal  $y(t)$  corresponding to the block diagram in  $\text{Examp ...p;$x(t)$,  $h(t)$  and  $y(t)$  cannot assume negative signal values in the program.

23 KB (3,675 words) - 17:30, 10 April 2023
Exercise 3.4: Simple Phase Modulator
The adjacent circuit allows the approximate realization of a phase-modulated signal.  ...r forms a sinusoidal signal of the same frequency, such that the modulated signal can be written as:

8 KB (1,175 words) - 17:04, 9 April 2022
Exercise 2.4Z: Repetition to IDFT
...r_Transform_(DFT)|"Discrete Fourier Transform"]]  of the book "Signal Representation" and is identical to the one there  [[Aufgaben:Exercise_5.2:_Inverse_D ...s thus describes the discrete form of the Fourier correspondence of the DC signal:

7 KB (1,085 words) - 20:22, 7 March 2023
Linear and Time Invariant Systems/Classification of the Distortions
Untermenü=Signal Distortion and Equalization ...'  is understood to be undesirable deterministic changes in a message signal caused by a transmission system. }}

14 KB (2,172 words) - 17:30, 9 November 2023