Rate-optimal scheduling of recursive DSP algorithms based on the scheduling-range chart

A method for rate-optimal scheduling of recursive DSP algorithms is presented. The approach is based on the determination of the scheduling window of each operation and the construction of a scheduling-range chart. The information in the chart is used during scheduling to optimize some quality criteria (number of hardware resources, latency, register life time) at the same time that a rate-optimal solution is guaranteed. An algorithm based on this approach is introduced. It can schedule cyclic as well as acyclic data-flow graphs. The algorithm is powerful enough to solve optimally some problems for which other proposed methods fai