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exploring_lora [2018/10/04 17:36] – [2. Theoretical Study] melhemexploring_lora [2018/10/06 13:45] – [1.2. Software Tools] samer
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 In order to design and implement experiments with LoRa, you will use the following devices:   In order to design and implement experiments with LoRa, you will use the following devices:  
  
-  * Arduino Mega (x2).+  * Arduino Mega or Arduino Duemilanove (x2).
   * LoRa shields from [[http://www.dragino.com/products/module/item/102-lora-shield.html|Dragino]] (x2).   * LoRa shields from [[http://www.dragino.com/products/module/item/102-lora-shield.html|Dragino]] (x2).
  
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   * Give the main characteristics of the LoRa shield from Dragino (www.dragino.com).   * Give the main characteristics of the LoRa shield from Dragino (www.dragino.com).
   * What type of Antenna are you using? Explain the corresponding characteristics.    * What type of Antenna are you using? Explain the corresponding characteristics. 
-  * Give an estimated cost of your platform.+  * Give an estimated cost of your devices.
 </WRAP> </WRAP>
- 
 ==== -. Software Tools ==== ==== -. Software Tools ====
  
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 Unzip the RadioHead library and copy it to your sketchbook library folder as detailed in [[https://www.arduino.cc/en/Guide/Libraries]]. Unzip the RadioHead library and copy it to your sketchbook library folder as detailed in [[https://www.arduino.cc/en/Guide/Libraries]].
- 
-<WRAP center round tip 75%> 
-Note well the location of the library folder on your computer. In the following, you will be required to modify source files located in this folder.  
-</WRAP> 
 ==== -. Installation ==== ==== -. Installation ====
  
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   * How does the spreading factor impact the coverage of a LoRa transmitter?    * How does the spreading factor impact the coverage of a LoRa transmitter? 
   * What is the transmission bit rate for each of the following configurations of your LoRa device? 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 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 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.+    * 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.   * 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.   * Compare the computed sensitivity to that provided by the {{ :an1200.22.pdf |Semtech Application Note AN1200.22}} for the same parameters.
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer