Multi-rate equivalents of cyclo-static synchronous dataflow graphs

In this paper, we present a transformation that takes a cyclo-static dataflow (CSDF) graph and produces an equivalent multi-rate synchronous dataflow (MRSDF) graph.\ud This fills a gap in existing analysis techniques for synchronous dataflow graphs; transformations into equivalent homogeneous synchronous dataflow (HSDF) graphs exist, but these suffer from an exponential increase in the graph's size.\ud We show the applicability of the presented transformation by demonstrating its effectiveness on the problem of optimising buffer sizes under a throughput constraint

System-level design of energy-efficient sensor-based human activity recognition systems: a model-based approach

This thesis contributes an evaluation of state-of-the-art dataflow models of computation regarding their suitability for a model-based design and analysis of human activity recognition systems, in terms of expressiveness and analyzability, as well as model accuracy. Different aspects of state-of-the-art human activity recognition systems have been modeled and analyzed. Based on existing methods, novel analysis approaches have been developed to acquire extra-functional properties like processor utilization, data communication rates, and finally energy consumption of the system