Delta-Sigma Domain Signal Processing: A Review with Relevant Topics in Stochastic Computing
Takao Waho, Akihisa Koyama, Hitoshi Hayashi · 2023
The progress over the last 30 years on ΔΣ-domain signal processing (ΔΣ-SP) is reviewed, focusing on basic circuits such as adders, multipliers, and filters. Based on bitstream operations, ΔΣ-SP shares many advantages with stochastic computing (SC). Moreover, the noise-shaping properties inherent to the ΔΣ modulation play a crucial role in overcoming the challenges in SC. Neural network applications, a promising field in the future, are also described.