exploring_lora
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exploring_lora [2018/10/06 15:13] – [6. Grading] samer | exploring_lora [2019/02/02 20:38] – [5. Coverage Challenge] samer | ||
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Unzip the RadioHead library and copy it to your sketchbook library folder as detailed in [[https:// | Unzip the RadioHead library and copy it to your sketchbook library folder as detailed in [[https:// | ||
+ | |||
+ | <WRAP center round tip 75%> | ||
+ | Make sure to restart your computer after the installation of Arduino IDE and run the software as administrator. | ||
+ | </ | ||
+ | |||
+ | |||
==== -. Installation ==== | ==== -. Installation ==== | ||
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<WRAP center round tip 75%> | <WRAP center round tip 75%> | ||
- | For Arduino Mega 2560, additional drivers for Microsoft Windows can be installed from [[http:// | + | For Arduino Mega 2560, additional drivers for Microsoft Windows |
+ | For Arduino Duemilanove, | ||
+ | [[https:// | ||
</ | </ | ||
===== -. Theoretical Study ===== | ===== -. Theoretical Study ===== | ||
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<WRAP left round help 100%> | <WRAP left round help 100%> | ||
- | * What is the relation between processing gain and spreading factor in LoRa modulation? | + | * What is the relation between processing gain and spreading factor in LoRa modulation? |
* How does the spreading factor impact the coverage of a LoRa transmitter? | * How does the spreading factor impact the coverage of a LoRa transmitter? | ||
* What is the transmission bit rate for each of the following configurations of your LoRa device? Explain your computation. | * What is the transmission bit rate for each of the following configurations of your LoRa device? Explain your computation. | ||
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For example, the scenario for assessing the impact of the spreading factor on the ToA consists of sending 100 packets for three different spreading factors //e.g.,// 7, 9, and 10, and drawing the average ToA or the distribution in a boxplot for comparing the results. | For example, the scenario for assessing the impact of the spreading factor on the ToA consists of sending 100 packets for three different spreading factors //e.g.,// 7, 9, and 10, and drawing the average ToA or the distribution in a boxplot for comparing the results. | ||
+ | |||
+ | As for the theoretical computation of the ToA, you can refer to the the following documents : | ||
+ | |||
+ | * The Semtech [[http:// | ||
+ | * An explanatory video: https:// | ||
+ | * Various calculation tools available online: https:// | ||
+ | |||
+ | Note that all messages sent and received by the [[https:// | ||
+ | |||
+ | * 8 symbol PREAMBLE | ||
+ | * Explicit header with header CRC (handled internally by the radio) | ||
+ | * 4 octets HEADER: (TO, FROM, ID, FLAGS) | ||
+ | * 0 to 251 octets DATA | ||
+ | * CRC (handled internally by the radio) | ||
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
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* Direct transmission between the two devices is only considered. | * Direct transmission between the two devices is only considered. | ||
- | * 3D distance is computed between devices. | + | * 3D distance is computed between devices. You can get the elevation from this [[ http:// |
- | * PDR must be higher than 10% as computed for 100 packets. | + | * PDR must be higher than 10% as computed for 100 packets. |
+ | * Supporting live video and screen capture should be used to authenticate the record. | ||
+ | |||
+ | You can use the [[https:// | ||
+ | |||
+ | <WRAP center round todo 60%> | ||
+ | Take a look at this tool [[http:// | ||
+ | </ | ||
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
- | * Compute the Fresnel zone for your transmission. | + | * Compute the Fresnel zone for your transmission |
- | * Provide the expression of the link budget and compute the received power using two different | + | * Provide the expression of the link budget and compute the received power using two different |
- | * Compare the received power obtained experimentally with the theoretical | + | * Compare the received power obtained experimentally with the results |
- | * Prepare a short presentation to describe your experiment. | + | * Prepare a short presentation |
</ | </ | ||
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| ^ Exemplary | | ^ Exemplary | ||
^ Techniques for Engineering Practice | ^ Techniques for Engineering Practice | ||
- | ^ Skills for Engineering Practice | + | ^ Skills for Engineering Practice |
- | ^ Engineering tools | Students showed advanced ability to properly use modern engineering tools that are necessary for the Labs, such as simulators, software or computer tools. | + | ^ Engineering tools | Students showed advanced ability to properly use modern engineering tools that are necessary for the Labs, such as simulators, software or computer tools. |
- | ^ Problem solving | + | ^ Problem solving |
- | ^ Results and analysis | + | ^ Results and analysis |
- | ^ Motivation, initiative, and creativity | + | ^ Motivation, initiative, and creativity |
^ Written communication skills | ^ Written communication skills | ||
^ Scientific referencing | ^ Scientific referencing |
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer