Channel estimation and fixed thresholds for multi-threshold decoding of low-density parity check codes

A method comprising:

• acquiring a plurality of thresholds, wherein acquiring a plurality of thresholds includes determining the thresholds with respect to a channel parameter;
• receiving a codeword from a communication channel;
• and
• using the plurality of thresholds to iteratively decode the codeword in a decoder, wherein the plurality of thresholds are determined before decoding the codeword, wherein determining the thresholds with respect to a channel parameter includes simulating a multi-threshold decoder to determine the thresholds with respect to the channel parameter.

A computer-readable medium that stores instructions, which when performed by a machine, cause the machine to:

• acquire a plurality of thresholds in the machine under direction of a processor of the machine;
• receive a codeword from a communication channel;
• and
• iteratively decode the codeword in a decoder of the machine using the plurality of thresholds, wherein the plurality of thresholds are determined before decoding the codeword such that using each threshold including using each threshold to make a decision, under control of the decoder, as to whether or not to update a bit and its associated reliability during the iterative decoding.

A computer-readable medium that stores instructions, which when performed by a machine, cause the machine to:

• acquire a plurality of thresholds;
• receive a codeword from a communication channel;
• and
• use the plurality of thresholds to iteratively decode the codeword, wherein the plurality of thresholds are determined before decoding the codeword, wherein to acquire a plurality of thresholds includes simulating a multi-threshold decoder to determine the thresholds with respect to a channel parameter or wherein to use the plurality of thresholds to iteratively decode the codeword includes:
• receiving information about a channel parameter;
• and
• selecting a value of a decoding threshold from the plurality of thresholds based on the received information to decode the codeword.

A system comprising:

• a communication interface to receive a signal from a communication channel, the signal containing a codeword;
• a threshold module to acquire a plurality of thresholds;
• and
• a decoder adapted to use the plurality of thresholds to iteratively decode the codeword, the thresholds arranged as a fixed values to the decoder, the decoder arranged to use each threshold to make a decision as to whether or not to update a bit and its associated reliability during the iterative decoding of the codeword.

A system comprising:

• a communication interface to receive a signal from a communication channel, the signal containing a codeword;
• a threshold module to acquire a plurality of thresholds;
• and
• a decoder adapted to use the plurality of thresholds to iteratively decode the codeword, the thresholds arranged as a fixed values to the decoder, wherein the system includes a channel estimation unit to provide information about a channel parameter, the decoder adapted to select a value of a decoding threshold from the plurality of thresholds based on the information to decode the codeword or wherein the system includes a connection to a simulation unit adapted to simulate a multi-threshold decoder to determine the thresholds with respect to a channel parameter of the communication channel or wherein the threshold module is adapted to simulate a multi-threshold decoder to determine the thresholds with respect to a channel parameter.