Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1991-04-30
1992-11-17
Hoff, Marc
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
341138, H03M 300
Patent
active
051647273
ABSTRACT:
A class of optimal nonlinear decoding algorithms for data acquisition applications of Sigma Delta modulators is applicable to all current Sigma Delta structures, including single and double loop, cascade and interpolative modulators. The decoding method takes on a particularly simple form for the case of constant modular inputs. While the performance of the present invention is identical to other optimal nonlinear decoding schemes such as table look-up, the present invention is simpler to implement. Numerical results show that the performance of the invention exceed that of conventional linear decoding.
REFERENCES:
patent: 4021799 (1977-05-01), Hinoshita et al.
patent: 4308524 (1981-12-01), Harrison et al.
patent: 4411002 (1983-10-01), Auger
patent: 4866442 (1989-09-01), Steim et al.
patent: 4876542 (1989-10-01), Van Bavel et al.
patent: 5030954 (1991-07-01), Riener
S. Hein & A. Zakhor, "Lower Bounds on the MSE of the Single and Double Loop Sigma Delta Modulators", May, 1990.
Chao, Nadeed, Lee and Sodini "A Higher Order Topology for Interpolative Modulators for Oversampling AD Converters", Mar., 1990.
Gray "Oversampled Sigma-Delta Modulation" May, 1987.
Zakhor/Hein "Optimal Decoding for Sigma Delta Modulators", Jun., 1990.
Uchimura, Hayashi, Kirmura & Iwata "Oversampling A-to-D and D-to-A Converters with Multistage Noise Shaping Modulators", Dec., 1988.
Gray "Spectral Analysis of Quantization Noise in a Single-Loop Sigma-Delta Modulator with dc input" Jun., 1989.
Wong & Gray "Two Stage Sigma-Delta Modulation" Nov., 1990.
Chou, Wong & Gray "Multistage Sigma-Delta Modulation" Jul., 1989.
Ferguson, Ganesan & Adams "One Bit Higher Order Sigma-Delta Converters" May, 1990.
Hein & Zakhor "Optimal Decoding for Data Acquisition Applications of Sigma-Delta Modulators" May, 1990.
Youla & Webb "Image Restoration by the Method of Convex Projections: Part 1-Theory" Oct. 1982.
Hein Soren
Zakhor Avideh
Hoff Marc
Regents of the Unversity of California
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