Pseudocodeword weights for non-binary LDPC codes
classification
💻 cs.IT
math.IT
keywords
pseudocodewordq-arycodesldpcweightchannelawgnbounds
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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.
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