Complex geological body is main types of complex oil and gas reservoir, and its irregular geometrical shape and acutely variable velocity have an effct upon the accurate imaging of complex reservoir.
This scheme considers the decoding property of irregular LDPC codes and decides whether iterative decoding continues based on the log-likelihood ratio value of lowest degree variable nodes.
该方案考虑到非规则LDPC码的译码特点，通过度数最低的变量节点的似然信息来判定迭代译码是否继续。
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Passing through the center of lobules, a central vein is radiating and arranging by hepatic cord or plate. Interval the hepatic cords or masses are irregular and variable sinusoid.