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--- exploring_lora [2019/10/10 11:05] – [4.2. [Classroom activity] Collisions and Packet Delivery Ratio] samer
+++ exploring_lora [2020/11/19 22:31] – [5. Coverage Challenge] samer
@@ Line 134: / Line 134: @@
 As for the theoretical computation of the ToA, you can refer to the the following documents :
-  * The Semtech [[http://semtech.com/uploads/documents/DS_SX1276-7-8-9_W_APP_V5.pdf| specification]] (section 4.1.1.6)
+  * The Semtech {{ :ds_sx1276-7-8-9_w_app_v5.pdf |specification}} (section 4.1.1.6)
   * An explanatory video: https://www.youtube.com/watch?v=C_Rh5GSENA4
   * Various calculation tools available online: https://www.loratools.nl/#/airtime, [[https://docs.google.com/spreadsheets/d/1voGAtQAjC1qBmaVuP1ApNKs1ekgUjavHuVQIXyYSvNc/edit?usp=sharing |Spreadsheet]]
@@ Line 152: / Line 152: @@
   * Analyze the obtained results and compare with the theoretical computations. You can superpose the theoretical results and the experimental ones on the same graph.
 </WRAP>
 ==== -. [Classroom activity] Collisions and Packet Delivery Ratio ====
@@ Line 180: / Line 179: @@
   * Direct transmission between the two devices is only considered.
-  * 3D distance is computed between devices. You can get the elevation from this [[ http://www.geocontext.org/publ/2010/04/profiler/en/ | site]].
+  * 3D distance is computed between devices.
   * 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://cloudrf.com/ | Cloud RF]] online service to obtain information on the elevation, Fresnel zone, and estimated path loss.
+You can use [[https://cloudrf.com/ | Cloud RF]] or [[http://radiomobile.pe1mew.nl/index.php?Welcome... | Radio Mobile]] online service to obtain information on the elevation, Fresnel zone, and estimated path loss.
-<WRAP center round todo 60%>
-Take a look at this tool [[http://radiomobile.pe1mew.nl/index.php?Welcome...]].
-</WRAP>
 <WRAP center round help 100%>
-  * Compute the Fresnel zone for your transmission using [[https://cloudrf.com/ | Cloud RF]]. Comment the result.
+  * Compute the Fresnel zone for your transmission. Comment the result.
   * Provide the expression of the link budget and compute the received power using two different path loss models (ITM, Line of sight) with Cloud RF.
-  * Compare the received power obtained experimentally with the results of Cloud RF.
+  * Compare the received power obtained experimentally with the results of the online simulators.
   * Prepare a short presentation (5 minutes pitch) to describe your experiment.
 </WRAP>