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--- exploring_lora [2018/09/30 10:33] – [4.2. Coverage] samer
+++ exploring_lora [2018/10/04 17:43] – [2. Theoretical Study] melhem
@@ Line 57: / Line 57: @@
   * What is the relation between processing gain and spreading factor in LoRa modulation? Explain.
   * How does the spreading factor impact the coverage of a LoRa transmitter?
-  * For each of the three possible configurations of your LoRa device, what is the transmission bit rate? Explain your computation.
+  * What is the transmission bit rate for each of the following configurations of your LoRa device? Explain your computation.
+    * Configuration 1: channel bandwidth = 125 kHz, spreading factor = 7, coding rate = 4/5.
+    * Configuration 2: channel bandwidth = 500 kHz, spreading factor = 7, coding rate = 4/5.
+    * Configuration 3: channel bandwidth = 125 kHz, spreading factor = 12, coding rate = 1/2.
   * Compute the receiver sensitivity, assuming the following parameters: channel bandwidth = 125 kHz, spreading factor = 7, coding rate = 4/5, bit error rate (BER) target = 10<sup>-4</sup>, and receiver noise figure = 6 dB. Refer to this {{ :1705.05899.pdf | article}} to determine the mapping between the BER and the SNR.
   * Compare the computed sensitivity to that provided by the {{ :an1200.22.pdf |Semtech Application Note AN1200.22}} for the same parameters.
@@ Line 135: / Line 138: @@
 In this section, you will measure the coverage of LoRa under different radio configurations.
-Start by identifying a set of five geographical locations or Test Points (TP). These TPs should be astutely chosen to explore the limits of LoRa coverage. Then, you should implement a function on the server that measures the ratio of successfully delivered packets or PDR (Packet Delivery Ratio). Now, you should run the experiment for three different radio configurations: such configurations should ensure different reliability levels (high, medium, and low reliability).
+Start by identifying a set of five geographical locations or Test Points (TP). These TPs should be astutely chosen to explore the limits of LoRa coverage. Then, you should implement a function on the server that measures the ratio of successfully delivered packets or PDR (Packet Delivery Ratio). Now, you should run the experiment for three different radio configurations: such configurations should provide different reliability levels (high, medium, and low reliability).
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