[SOLVED] COMP4336/9336 Mobile Data Networking Lab 7: LoRa encoding and decoding

Objectives
COMP4336/9336 Mobile Data Networking Lab 7: LoRa encoding and decoding
To encode and decode LoRa packet using MATLAB
Prerequisites

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Knowledge of LoRa modulation techniques.
Access to a PC and MATLAB
You will use a LoRa simulator in MATLAB to modulate/encode text messages, then decode/demodulate the encoded message.
Figure 1: LoRa sender and receiver side process
Task 1: Discover the spectrogram of a LoRa packet
Firstly, install the LoRa simulator in MATHLAB: https://github.com/jkadbear/LoRaPHY
Then try to use the LoRa simulator to encode a message 4336 (you can refer to the example code save_signal_to_file.m in the git) and output the signal array as a file. Then generate the spectrogram of the signal (Fogure 2 shows an example of LoRA spectrogram). Include the spectrogram image in your report, while specifying the preamble, Start Frame Delimiter (SFD), and data part in the spectrogram.

Figure 2: the spectrogram of the message 1234
Task 2: Decode the LoRa signal
Load the signal from the file generated from Task1, and then convert the signal back to the original text message (you can refer to the example code load_signal_from_file.m). Include the output in your report.
Submit your report that includes the outcomes from the two tasks.
Penalty at the rate of 5% for each day late will be strictly enforced for all lab submissions. Allsubmissions will be subject to strict UNSW plagiarism rules.
End of Lab 7 Hope you enjoyed this lab.

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