Emergent Mind

Pseudocodeword-based Decoding of Quantum Stabilizer Codes

(1903.01202)

Published Mar 4, 2019 in cs.IT and math.IT

Abstract

It has been shown that graph-cover pseudocodewords can be used to characterize the behavior of sum-product algorithm (SPA) decoding of classical codes. In this paper, we leverage and adapt these results to analyze SPA decoding of quantum stabilizer codes. We use the obtained insights to formulate modifications to the SPA that overcome some of its weaknesses.

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