Modular communication systems based on spread spectrum modulation techniques using GNU radio
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Abstract
This research focuses on modular system development in GNU Radio software as a teaching aid for telecommunications experimentation. The developed systems use direct sequence spread spectrum (DSSS) and frequency hopping (FHSS) modulation techniques. The modules configured in each system allow for a variation of parameters such as data size, modulation type, channel type, noise amplitude, and characteristics specific to implemented techniques. Results were analyzed using original signal graphs and modulated signal graphs in time
and frequency domains, constellation diagrams, signal-to-noise ratio (SNR), and bit error rate (BER). The modularity offered by the systems developed in this work facilitates the generation of diverse scenarios without a need to create them independently, allowing experimentation to focus on analyzing results.
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References
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