Low-density parity-check code: Difference between revisions

Revision as of 04:21, 3 March 2006

Revision as of 04:24, 3 March 2006

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factor graph notation. A message is encoded by placing bits on the

'''T's''' at the top such that the graphical constraints are

satisfied. Specifically, all lines connecting to an <math>"="</math>

box have the same value, and all values connecting to a

<math>"+"</math> box must sum to zero [[modular arithmetic|modulo]] two.

[[Image:ldpc_code_fragment_factor_graph.png|none]]

If we ignore