exploring_lora
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exploring_lora [2018/09/29 23:03] – [4.2. Coverage] samer | exploring_lora [2018/09/29 23:42] – [5. Coverage Challenge] samer | ||
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==== -. [Classroom activity] Collisions and Packet Delivery Ratio ==== | ==== -. [Classroom activity] Collisions and Packet Delivery Ratio ==== | ||
- | In this section, you will measure the impact of collisions | + | In this section, you will measure the impact of the packet arrival rate on the collision rate and consequently the PDR. |
The setting for this experiment is unique: | The setting for this experiment is unique: | ||
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* Only one server is required in the classroom. This server should compute the ratio of successfully delivered packets or PDR. | * Only one server is required in the classroom. This server should compute the ratio of successfully delivered packets or PDR. | ||
* All groups are required to use the same frequency, spreading factor, and coding rate. | * All groups are required to use the same frequency, spreading factor, and coding rate. | ||
+ | * On each client, packets will be generated following a Poisson process with the same average arrival rate for all groups. | ||
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
- | * Draw the PER as a function of the transmission period. Analyze your results. | + | * Draw the PDR as a function of the average arrival rate. Analyze your results. |
- | * What type of mathematical | + | * What type of mathematical |
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===== -. Coverage Challenge ===== | ===== -. Coverage Challenge ===== | ||
- | In this section, you will study the properties | + | In this section, you are required to establish a record |
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+ | * Direct transmission between | ||
+ | * 3D distance is computed between devices. | ||
+ | * PDR must be higher than 10% as computed | ||
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
- | * Provide | + | * Compute |
- | * Draw the RSSI values as a function | + | * Provide |
- | * What is the path loss exponent? | + | * Compare the received power obtained |
- | * Using regressions, | + | * Write an article (blog, wiki, ...) to describe your experiment. |
- | * Compare the obtained | + | |
</ | </ | ||
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- | In order to compute distances in your experiment, you can get the GPS coordinates as recorded by your smartphone using an application such as [[https:// | ||
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===== -. Grading ===== | ===== -. Grading ===== | ||
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer