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| -rw-r--r-- | bakalarka.pdf | bin | 4895582 -> 4898375 bytes | |||
| -rw-r--r-- | text/labina.tex | 30 |
2 files changed, 27 insertions, 3 deletions
diff --git a/bakalarka.pdf b/bakalarka.pdf Binary files differindex 98edfbc..8b65751 100644 --- a/bakalarka.pdf +++ b/bakalarka.pdf diff --git a/text/labina.tex b/text/labina.tex index eaabeaa..3feb68e 100644 --- a/text/labina.tex +++ b/text/labina.tex @@ -30,6 +30,14 @@ From this a maximal range can be simulated using \ac{RF} attenuators in laborato d = A_{max} \end{equation} +\subsection{Antennas} + +For ability to add additional attenuators external antennas had to be made. For this a $\lambda / 4$ monopole antenna design has been chosen. + + +O2 on 800 MHz + + Dosah zásvisí na vzdálenosti, v ideálních podmínkách line of sight Free-space path loss Popis Free-space path loss, teorie, vzorečky @@ -51,11 +59,21 @@ Technika zdroj šumu, směšovač, Pro jednotlivé AWGN a CNR carier noise ratio Tabulka utlum , km ve free-space , teoreticka sila signalu , signal na vstupu podle FW , packet drop / BER , spotřeba -\section{Power consumtion} +\section{Power consumption} + +\colorbox{orange}{Toto asi bude chujovina} +With wireless communication often comes an incentive for power source without need for external wires and power transmission network. Significant research has been made to alternative power sources for IoT devices from prevalent energy sources like light, vibration, temperature gradient and similar. Use of small solar panels with potential large capacitor seems to be the most viable out of these but there [tuzdroj]. + +\colorbox{orange}{Konec chujoviny} + +All power sources expect the ones connected directly to energy power grid have some sort of limited capacity. In the case of primary batteries and rechargeable batteries this limit is absolute and usually has to be guarantied in terms of + + + -Globalni oteplovani bad, small battery good +%Globální oteplování bad, small battery good -Technika Power Profiler Kit II +\subsection{Nordic Power Profiler Kit II} \section{Latency} @@ -110,6 +128,12 @@ Spotřeba, packet drop, rychlost, latence závislá na útlumu (popř. intenzita 33 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline 36 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline 40 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 43 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 46 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 50 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 53 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 56 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline + 60 & -140 & -80 & 10 & 40 & 0.5 & 0.1 & 98 & 10 & 0.1 & 400 & 400 & 1 \\ \hline \end{tabular} \caption{NB-IoT / LTE-M measurements for message length = X B and added noise = X dBm} \end{sidewaystable} |