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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-21622

# Kelley, C A; Sridhara, D; Rosenthal, J (2006). Pseudocodeword weights for non-binary LDPC codes. In: Barg, A; et al. 2006 IEEE International Symposium on Information Theory, Vols 1-6, Proceedings. Seattle USA, 1379-1383. ISBN 978-1-4244-0505-3.

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## Abstract

Pseudocodewords of q-ary LDPC codes are examined and the weight of a pseudocodeword on the q-ary symmetric channel is defined. The weight definition of a pseudocodeword on the AWGN channel is also extended to two-dimensional q-ary modulation such as q-PAM and q-PSK. The tree-based lower bounds on the minimum pseudocodeword weight are shown to also hold for q-ary LDPC codes on these channels