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+---
+title: Chapter 3 - Note
+timestamp: 09.05.2025 - 10:09
+tags:
+  - Note
+  - Uni
+---
+>[!info]
+
+# Tasks
+- [ ] Task1 
+
+
+> [!info] Link Budget 3.20
+> $P_{dBm,T}$ = Sendeleistung am TX
+> $G_{dBi,T}$ = Antennen Gain am TX
+> $L_{dB,F}$ = Leistung(sverlust) über den Kanal
+> $G_{dBi,R}$ = Antennen Gain am RX
+> $P_{dBm,R}$ = Signal am RX
+
+
+
+---
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+---
+title: Conversion Table - Note
+timestamp: 15.08.2025 - 16:59
+tags:
+  - Note
+---
+![logo](logo.png)
+# Conversion Table
+
+>[!info] Logarithmic Conversion
+>Definition of Bell:
+>$1B = \log_{10}\frac{P_1}{P_2}$
+>Therefor a Dezibell:
+>$P_{dB} = 10\cdot\log_{10}\frac{P_1}{P_2} \longleftrightarrow \frac{P_1}{P_2} = 10^\frac{P_{dB}}{10}$ 
+
+
+Value Conversion according to:
+$$P_{dB} = 10 \cdot \log_{10} x$$
+
+| Value | DB  | Note          |
+| ----- | --- | ------------- |
+| 2     | 3   |               |
+| 4     | 6   |               |
+| 5     | 7   |               |
+| 10    | 10  |               |
+| 0.2   | -7  | $\frac{1}{5}$ |
+| 0.5   | -3  | $\frac{1}{2}$ |
+
+
+# Dezibel Units
+>[!info] $dBm$ & $dBW$
+>decibel millitwatt
+>measurement of Power level $P_{dBm}$
+>Ratio for Power $P$ compared to $1mW$
+>$$P_{dBm}=10\cdot\log_{10}\frac{P}{1mW}dBm$$
+>
+>decibel Watt
+>similar but for the reference $1W$
+>$$P_{dBW}=10\cdot\log_{10}\frac{P}{1W}dBW$$
+
+
+>[!warning] Conversion
+>$$P_{dBm}= P_{dBW} -30$$
+
+
+
+
+
+---
+
+# Cell Parameter Configurationen
+
+> [!info] SIR - Signal to Interference Ratio
+> $$SIR = \frac{1}{6} (3k)^{\frac{\gamma}{2}}$$
+> Cluster Size k:
+> $$k = \frac{1}{3}(\frac{D}{R})^2$$
+> with D:
+> $$D = R \cdot \sqrt{3k}$$
+> Testing k is done by:
+> $$k = i^2 + ij + j^2; \quad i,j\in\mathbb{N}$$
+
+
+---
+# Erlang B
+![[exercise3.pdf#page=1]]
+
+---
+
+# Friss Transmission Formula
+![[exercise4.pdf#page=5]]
+
+---
+# Diffraction & Reflection
+![[exercise5.pdf#page=1]]
+
+---
+# Okumura Hata
+
+---
+# Link Budget
+
+---
+# Doppler Effekt
+
+---
+# C1 Kriterium
+
+---
+# OFDM
+---
+# WLAN
+# LTE
+
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+---
+title: log10 Tabelle - Note
+timestamp: 12.08.2025 - 21:38
+tags:
+  - Note
+  - Uni
+---
+>[!info]
+
+# Regeln
+- Umwandlung von Multiplikation in Addition
+$$\log_n(x*y) = \log_n(x) + \log_n(y)$$
+- Potenzgesetz
+$$\log_n(x^n)=n\cdot\log_n(x)$$
+# Tabelle
+
+$$\forall n\in \mathbb{N}_+: \log_n(1) = 0$$
+
+
+
+---
@@ -0,0 +1,22 @@
+---
+title: Grundlagen des Mobilfunks - Note
+timestamp: 08.04.2025 - 15:10
+tags:
+  - Note
+  - Uni
+---
+![logo](logo.png)
+# Grundlagen des Mobilfunks
+
+
+>[!info] Links
+>[Vorlesung](https://studip.tu-braunschweig.de/dispatch.php/course/overview?cid=8916e4682c5d928310c79f1a6f879dac)
+> [Übung](https://studip.tu-braunschweig.de/dispatch.php/course/overview?cid=d1ea247f37a71365d3a0696b973bf1bc)
+
+# Tasks
+- [ ] [[Ch1+2.pdf]] Zusammenfassen
+- [ ] [[Ch3.pdf]] Zusammenfassen
+	- [ ] Dopplereffekt
+- [ ] [[Ch4+5.pdf]] Zusammenfassen
+
+---