Differences

This shows you the differences between two versions of the page.

--- exploring_lora [2018/09/27 08:53] – [2. Software Tools] samer
+++ exploring_lora [2018/09/27 10:30] – [5. Theoretical Analysis] samer
@@ Line 56: / Line 56: @@
 [{{ :client-iotlab1.png?direct&600 ||Figure 2. Client serial monitor}}]
 [{{ :server-iotlab1.png?direct&600 ||Figure 3. Server serial monitor}}]
+===== -. Theoretical Analysis =====
+In this section, a theoretical analysis of the performance of LoRa modulation
+<WRAP left round help 100%>
+  * 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 module, what is the transmission bit rate? Explain your computation.
+  * 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.
+</WRAP>
 ===== -. Modifying the Radio Parameters =====
@@ Line 68: / Line 78: @@
 setModemConfig(Bw125Cr45Sf128);
 </file>
-<WRAP left round help 100%>
-  * 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 module, what is the transmission bit rate? Explain your computation.
-  * 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.
-</WRAP>
 In the remainder of this lab, you will conduct measurements to validate the obtained theoretical receiver sensitivity.