Differences

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--- exploring_lora [2018/09/29 23:03] – [4.2. Coverage] samer
+++ exploring_lora [2018/09/29 23:26] – [4.3. [Classroom activity] Collisions and Packet Delivery Ratio] samer
@@ Line 145: / Line 145: @@
 ==== -. [Classroom activity] Collisions and Packet Delivery Ratio ====
-In this section, you will measure the impact of collisions on the network throughput using different transmission periods.
+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:
@@ Line 151: / Line 151: @@
   * 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.
+  * 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%>
-  * 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 models enables to theoretically compute the PER?
+  * What type of mathematical model enables to theoretically compute the PDR? Verify the obtained results.
 </WRAP>
 ===== -. Coverage Challenge =====