FPGA-based reservoir computing system for ECG denoising

•SNRC is proposed to overcome noises that corrupt ECG signals.•Two typical types of ECG-contaminating noises are simulated and tested.•The proposed SNRC affords better results than the previous techniques.•An FPGA-based SNRC architecture is implemented to afford high speed and privacy.•The floating point (FP) arithmetic is used to obtain more accurate results.