Storage device and operating method of storage device

An operating method of a storage device which includes a nonvolatile memory device and a memory controller configured to control the nonvolatile memory device, the method comprising:

• obtaining, by the memory controller, channel selection information indicating positions of data bits included in input data, positions of error correction code (ECC) parity bits, and positions of shaping parity bits;
• generating, by the memory controller, an alignment vector by aligning the data bits, the ECC parity bits, and the shaping parity bits, based on the channel selection information;
• determining, by the memory controller, values of the ECC parity bits;
• generating based on first log likelihood ratio (LLR) information related to the alignment vector, by the memory controller, second LLR information for a target vector including the shaping parity bits;
• determining, by the memory controller, values of the shaping parity bits, based on the target vector and the second LLR information;
• performing, by the memory controller, an update operation on the shaping parity bits, based on the determined values;
• and
• generating, by the memory controller, a codeword with respect to the input data, based on a first matrix multiplication calculation of the target vector and a first generation matrix after the update operation is performed.

A storage device, comprising:

• a nonvolatile memory device;
• and
• a memory controller configured to
• control the nonvolatile memory device,
• obtain channel selection information indicating positions of data bits included in input data and positions of shaping parity bits,
• generate an alignment vector by aligning the data bits and the shaping parity bits based on the channel selection information,
• generate, based on first log likelihood ratio (LLR) information related to the alignment vector, second LLR information for a target vector including the shaping parity bits,
• determine values of the shaping parity bits based on the target vector and the second LLR information,
• perform an update operation on the shaping parity bits based on the determined values, and
• generate a codeword with respect to the input data based on a first matrix multiplication calculation of the target vector and a first generation matrix.