Differences

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--- exploring_lora [2018/09/29 14:03] – [4.1. Time on Air] samer
+++ exploring_lora [2018/09/29 14:09] – [4.2. Packet Delivery Ratio] samer
@@ Line 121: / Line 121: @@
 ==== -. Time on Air ====
-In this section, you will measure the Time on Air (ToA) as given by the time necessary to transmit a message on the radio interface. You will assess the impact of the spreading factor, bandwidth, coding rate, the message size on the ToA.
+In this section, you will measure the Time on Air (ToA) as given by the time necessary to transmit a message on the radio interface. You will assess the impact of the spreading factor, bandwidth, coding rate, and the message size on the ToA.
-For this, you can start by implementing a function on the client that measures the time necessary for sending a message. For example, you can use the [[https://www.arduino.cc/en/Reference/Micros| micros()]] function available in the arduino libraries. As we are in presence of variable experimental conditions, experiments should be repeated.
+For this, you will start by implementing a function on the client that measures the time necessary for sending a message. For example, you can use the [[https://www.arduino.cc/en/Reference/Micros| micros()]] function available in the arduino libraries. Now, you can modify one of the parameters (spreading factor, bandwidth, coding rate, message size) and record the impact on the ToA. Note well that you may need to repeat the expriment to obtain the statistical distributions.
 <WRAP center round help 100%>
-  * Describe the scenarios you used for assessing the impact of radio parameters on the ToA. You can join commented extracts of your code.
+  * Describe the scenarios you used for assessing the impact of the different parameters on the ToA. You can join commented extracts of your code.
-  * Visualise the experimental results by plotting the ToA as a function of each of the different radio parameters.
+  * Visualise the experimental results by plotting the ToA as a function of each one of the different parameters.
   * 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>
 ==== -. Packet Delivery Ratio ====
-In this section, you will measure the Packet Error Rate (PER) under the three different radio configurations and for different transmission periods. For this, you can start by implementing a function on the client that measures the ratio of successfully delivered packets.
+In this section, you will measure the Packet Delivery Ratio (PDR) under the three different radio configurations and for different transmission periods. For this, you can start by implementing a function on the client that measures the ratio of successfully delivered packets.
 Only for this test, all groups are required to use the same frequency (for example 868.10 MHz).