Exploiting SORN-Arithmetic for Efficient Cross Correlation in Low-Complexity FPGAs
Jochen Rust, Marvin Henkel, Nils Hülsmeier, Moritz Bärthel, Steffen Paul · 2024
In this paper a novel approach for the efficient computation of the cross-correlation operator is presented, targeting Low-Complexity FPGAs. To keep the signal processing effort of the required complex operators low, Sets-of-Real-Numbers (SORN) arithmetic is considered. For the underlying datatype, a non-uniform interval segmentation scheme is applied, leading to further improvements in terms of algorithmic performance. The feasibility of our approach is demonstrated on the GateMate CCGM1A1 FPGA, highlighting a hybrid SORN-based cross-correlation to be a powerful approach for resource constrained systems.