OPTIMAL DECODING FOR DATA ACQUISITION APPLICATIONS OF SIGMA DELTA MODULATORS
We propose a class of optimal decoding algorithms for data acquisition applications of Sigma Delta (EA) modulators. Our technique is applicable to all current EA structures, including single and double loop, cascade and interpolative modulators. While the performance of our technique is identical to that of other optimal nonlinear decoding schemes such as table look-up, it is considerably simpler to implement. Simulation results are presented to compare the performance of our decoding technique to that of linear decoders.