Systems and methods for block-kronecker based low density parity check (LDPC) code with 1/2 code rate
AssigneeAvago Technologies International Sales Pte. Limited
InventorsRethnakaran Pulikkoonattu, Andrew Blanksby, Vinko Erceg
Life of this patent
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Abstract
An apparatus may include a transmitter and one or more processors. The one or more processors may identify, based on a first parity check matrix of a first quasi-cyclic-low-density parity-check (QC-LDPC) code according to a code rate of 1/2, a second parity check matrix corresponding to a first exponent matrix comprising 1152 values for a second QC-LDPC code. The second QC-LDPC code may have a code block size that is twice a code block size of the first QC-LDPC code. The one or more processors may encode data using the second parity check matrix. The transmitter may be configured to transmit the encoded data.
Claims18
A method, comprising:
- identifying, by baseband circuitry of a first device, a first parity check matrix of a first quasi-cyclic-low-density parity-check (QC-LDPC) code according to a code rate of 1/2;
- determining, by the baseband circuitry, based on a result of a Khatri-Rao product of the first parity check matrix and a first binary matrix having the same dimensions as dimensions of an exponent matrix of the first parity check matrix, a second parity check matrix corresponding to a first exponent matrix comprising 1152 values for a second QC-LDPC code, wherein the second QC-LDPC code has a code block size that is twice a code block size of the first QC-LDPC code;
- encoding, by an encoder of the baseband circuitry of the first device, data using the second parity check matrix;
- and
- transmitting, by a transmitter of the first device, the encoded data over a wireless channel to increase a gain in a signal-to-noise (SNR) of the wireless channel compared with encoding data using the first QC-LDPC code.
An apparatus comprising:
- a transmitter and baseband circuitry, wherein
- the baseband circuitry is configured to:
- identify a first parity check matrix of a first quasi-cyclic-low-density parity-check (QC-LDPC) code according to a code rate of 1/2;
- determine, based on a result of a Khatri-Rao product of the first parity check matrix and a first binary matrix having the same dimensions as dimensions of an exponent matrix of the first parity check matrix, a second parity check matrix corresponding to a first exponent matrix comprising 1152 values for a second QC-LDPC code, wherein the second QC-LDPC code has a code block size that is twice a code block size of the first QC-LDPC code;
- and
- encode, by an encoder of the baseband circuitry, data using the second parity check matrix, and
- the transmitter is configured to transmit the encoded data over a wireless channel to increase a gain in a signal-to-noise (SNR) of the wireless channel compared with encoding data using the first QC-LDPC code.
An apparatus comprising:
- a receiver configured to receive encoded data over a wireless channel to increase a gain in a signal-to-noise (SNR) of the wireless channel compared with encoding data using a first quasi-cyclic-low-density parity-check (QC-LDPC) code, wherein the encoded data is encoded using a second QC-LDPC code according to a code rate of 1/2, wherein the second QC-LDPC code has a code block size that is twice a code block size of the first QC-LDPC code;
- and
- baseband circuitry configured to:
- identify, based on a first parity check matrix of the first QC-LDPC code according to the code rate of 1/2;
- determine, based on a result of a Khatri-Rao product of the first parity check matrix and a first binary matrix having the same dimensions as dimensions of an exponent matrix of the first parity check matrix, a second parity check matrix corresponding to a first exponent matrix comprising 1152 values for the second QC-LDPC code;
- and
- decode the received encoded data using the second binary parity check matrix.
Dependencies are inferred from the claim text.