Complex envelope-based information processing on SDR platform
Software-Defined Radio (SDR), and more broadly Software-Defined Electronics (SDE), have become essential components of modern professional electronic systems. Their theoretical foundation is based on the application of complex envelopes, which allow the baseband-equivalent representation of band-limited signals and Linear Time-Invariant (LTI) systems. This representation preserves all relevant information of the signal or system, except for the carrier frequency.
The generation of the baseband-equivalent signal is supported by commercially available integrated circuits that ensure reliable operation within specified bandwidth and frequency ranges. An SDR receiver based on the RTL2832U and R8202T chips provides a practical platform for implementing baseband-equivalent signal processing.
The objective of the project is for the student to become familiar with the functional blocks of the SDR receiver and to acquire the theoretical and practical knowledge required for baseband-equivalent signal generation and processing. Based on the obtained baseband waveforms, the student shall design and implement a complex signal-processing application using Matlab or LabVIEW as recommended, or an alternative software environment of their choice.
Due to the nature of the SDR receiver, the core task involves the dynamic processing, analysis, and visualization of high-frequency RF signals in the baseband domain. The exact application domain may be specified and refined in consultation with the supervisor. Possible application examples include cognitive radio, intelligent jamming systems, spectrum analysis, or related SDR-based signal-processing solutions.
BME-MIT




