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Exercise 3.2Z: Sinc-Squared Spectrum with Diracs
The sketched spectrum  ${X(f)}$  of a time signal  ${x(t)}$  is composed of ...p; $2T$  and symmetrical about  $t = 0$  $($i.e.:  the signal values are  $\ne 0 $  only between  $–T$  and  $

4 KB (582 words) - 15:11, 24 May 2021
Exercise 3.8: Triple Convolution?
{{quiz-Header|Buchseite=Signal Representation/The Convolution Theorem and Operation This equation is not suitable for calculating the so-called  "direct signal transfer factor"   ⇒   $H(f = 0)$,  since both the bracke

9 KB (1,433 words) - 14:27, 29 April 2021
Exercise 3.6Z: Complex Exponential Function
...ne-sided spectral function  ${X(f)}$, which results in a complex time signal  ${x(t)}$. *For the first two sub-tasks use the signal parameters  $A = 1\, \text{V}$  and  $f_0 = 125 \,\text{kHz}

5 KB (748 words) - 17:12, 3 May 2021
Exercise 2.4: Rectified Cosine
...is applied to the input of a half-wave rectifier.  At its output, the signal  $y(t)$ results, which is shown in the graph below. ...sp; limited to only  $N = 3$  coefficients and the actual output signal  $y(t)$.

7 KB (1,083 words) - 14:24, 15 April 2021
Exercise 4.3Z: Hilbert Transformator
*the analytical signal  $x_{+}(t)$  can be generated, *from the real band-pass signal  $x(t)$.

6 KB (1,008 words) - 16:13, 24 May 2021
Exercise 4.4Z: Pointer Diagram for SSB-AM
The analytical signal  $s_+(t)$  with the line spectrum ...enz  $f_{\rm N} = 10 \ \text{kHz})$  with a cosinusoidal carrier signal  $(f_{\rm T} = 50 \ \text{kHz})$ , whereby only the upper sideban

7 KB (1,023 words) - 05:15, 18 September 2022
Signal Representation/Signal classification
...system,  both  deterministic signals  and  stochastic signal  occur. A  »'''deterministic signal'''«  exists,  if its time function  $x(t)$  can b

16 KB (2,524 words) - 14:46, 22 June 2023
Exercise 2.11Z: Once again SSB-AM and Envelope Demodulator
[[File:P_ID1050__Mod_Z_2_10.png|right|frame|Equivalent low-pass signal in <br>single-sideband AM]] ...the equivalent low-pass signal  (German:  "äquivalentes Tiefpass-Signal"   ⇒   subscript:  "TP")  in the complex plane –

6 KB (1,003 words) - 14:45, 17 November 2022
Mobile Communications/Non-Frequency-Selective Fading With Direct Component
...e stray components  $(2\sigma^2)$  the better suited for digital signal transmission is the mobile communication channel. == Example of signal behaviour with Rice fading==

7 KB (1,061 words) - 16:55, 3 February 2023
Signal Representation/Discrete Fourier Transform (DFT)
|Untermenü=Time and Frequency-Discrete Signal Representation |Vorherige Seite=Discrete-Time Signal Representation

20 KB (3,186 words) - 17:57, 28 June 2023
Exercise 3.10: Rayleigh Fading
...nals"  in the book  [[Signal Representation]]  to a complex signal: ...ine of sight between the mobile user and the base station,  the radio signal thus reaches the receiver exclusively by indirect means  (refraction,&

5 KB (846 words) - 13:01, 17 February 2022
Mobile Communications
*Many of the fundamentals covered in the book  »[[Signal Representation]]«  are still valid.  Differences arise from the radio chan ===Exercises and multimedia===

4 KB (530 words) - 13:27, 3 April 2023
Exercise 4.2: Rectangular Spectra
:is a low-pass signal whose two parameters  $u_0$  and  $T_u$  are to be dete ...spectrum  $W(f)$ shows that  $w(t)$  describes a band-pass signal.

6 KB (935 words) - 15:49, 5 May 2021
Exercise 1.4: "Pointer diagram" and "Locality Curve"
[[File:P_ID966__Mod_A_1_4_neu.png|right|frame|A given analytical signal in the complex plane]] The accompanying graph shows the analytical signal  $s_+(t)$  in the complex plane.

8 KB (1,257 words) - 13:19, 24 March 2022
Modulation Methods/General Model of Modulation
The two input signals and the output signal have the following characteristics: ...low-frequency message signal and has the spectrum  $Q(f)$.  This signal is continuous in value and time and limited to the frequency range  $|

17 KB (2,756 words) - 19:09, 12 January 2023
Exercise 4.5Z: Simple Phase Modulator
{{quiz-Header|Buchseite=Signal_Representation/Equivalent Low-Pass Signal and its Spectral Function ...ed by the signal  $m(t)$, which results from the cosinusoidal carrier signal  $z(t)$  by phase shifting by  $\phi = 90^\circ$ :

6 KB (925 words) - 16:16, 24 May 2021
Exercise 1.6Z: Comparison of Rayleigh and Rice
...cosine oscillation with amplitude  $1)$,  the low-pass reception signal is  $r(t)=z(t)$. ...'  and  '''(6)''', a BPSK signal is assumed .  The low-pass signal  $s(t)$  thus has a rectangular shape with the possible values&nb

9 KB (1,455 words) - 14:19, 18 January 2023
Exercise 3.9: Convolution of Rectangle and Gaussian Pulse
{{quiz-Header|Buchseite=Signal Representation/The Convolution Theorem and Operation {Calculate the signal  $y_1(t) = x_1(t) \ast h(t)$.  What values result at times 

6 KB (983 words) - 09:05, 26 May 2021
Exercise 2.6: Complex Fourier Series
We consider the signal  $x(t)$,  defined by the two parameters  $T_0$  and&nbs of this signal are obtained after mathematical transformations:

6 KB (1,062 words) - 11:49, 16 April 2021
Exercise 3.5Z: Integration of Dirac Functions
...reicksignals|Exercise 3.5]]  the spectrum  ${Y(f)}$  of the signal Assume the time signal  ${x(t)}$  according to the middle sketch, which is composed of t

5 KB (782 words) - 15:21, 24 May 2021