Speaker: Dan Scholnik (NRL)

Title: Spatio-Temporal Delta-Sigma Modulation


Classical delta-sigma modulation gains resolution through temporal oversampling by using a high-speed, low-resolution quantizer and shaping the resulting quantization errors out of the signal band. Likewise, spatial delta-sigma modulation is often used in image halftoning to create high-visual-quality binary images. In this talk I will present an approach to joint spatial and temporal delta-sigma modulation uisng a general time-invariant, space-varying architecture. Although the primary application of interest is to reduce temporal oversampling requirements in high-SNR antenna transmit arrays, the technique also has potential application to halftoned movies on binary displays.