Maxio Technology (hangzhou) Ltd.

Shirley Xiaoling Fang

Mohammad Athar Khalil

Jimmy Pu

The present invention provides systems and methods to detect when hard decisions change for bit nodes of one or more layers of a layered LDPC decoder and to update accumulated partial syndrome calculations for those layers. As hard decisions of bit nodes are generated, they are compared with their previous values. If the hard decisions change, partial syndrome calculations are accumulated and updated for the layers having non-zero elements in one or more columns of the parity check matrix corresponding to the bit nodes of the changed hard decisions. If the hard decisions for the bit nodes are unchanged, the partial syndrome calculations for the corresponding layers are not updated. Changes to hard decisions of codewords are tracked and partial syndromes are flipped for the layers of the columns of the parity check matrix corresponding to the bit nodes of the changed hard decisions.

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San Diego, CA, United States of America

Shirley Xiaoling Fang