Parity bit channel assignment for polar coding
AssigneeQUALCOMM Incorporated
InventorsJian Li, Changlong Xu, Chao Wei, Jilei Hou, Jing Jiang
Life of this patent
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Abstract
Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded.
Claims29
1-64. (canceled)
A method for wireless communications, comprising:
- identifying a set of information bits and a set of parity check bits for encoding using a polar code having a set of polar channels;
- assigning the set of information bits to a first subset of the set of polar channels and the set of parity check bits to a second subset of the set of polar channels based at least in part on respective reliability metrics for the set of polar channels, wherein a parity check bit of the set of parity check bits is assigned to a polar channel based at least in part on a channel index of the polar channel;
- and
- encoding the set of information bits and the set of parity check bits based at least in part on the first and second subsets of polar channels of the set of polar channels.
A method for wireless communications, comprising:
- identifying a set of information bits and a set of parity check bits for decoding using a polar code having a set of polar channels;
- determining a first subset of the set of polar channels assigned to the set of information bits and a second subset of the set of polar channels assigned to the set of parity check bits based at least in part on respective reliability metrics for the set of polar channels, wherein a parity check bit of the set of parity check bits is assigned to a polar channel based at least in part on a channel index of the polar channel;
- and
- decoding the set of information bits and the set of parity check bits based at least in part on the first and second subsets of polar channels of the set of polar channels.
An apparatus for wireless communications, comprising:
- a processor,
- memory coupled with the processor;
- and
- instructions stored in the memory and executable by the processor to cause the apparatus to:
- identify a set of information bits and a set of parity check bits for encoding using a polar code having a set of polar channels;
- assign the set of information bits to a first subset of the set of polar channels and the set of parity check bits to a second subset of the set of polar channels based at least in part on respective reliability metrics for the set of polar channels, wherein a parity check bit of the set of parity check bits is assigned to a polar channel based at least in part on a channel index of the polar channel;
- and
- encode the set of information bits and the set of parity check bits based at least in part on the first and second subsets of polar channels of the set of polar channels.
An apparatus for wireless communications, comprising:
- a processor,
- memory coupled with the processor;
- and
- instructions stored in the memory and executable by the processor to cause the apparatus to:
- identify a set of information bits and a set of parity check bits for decoding using a polar code having a set of polar channels;
- determine a first subset of the set of polar channels assigned to the set of information bits and a second subset of the set of polar channels assigned to the set of parity check bits based at least in part on respective reliability metrics for the set of polar channels, wherein a parity check bit of the set of parity check bits is assigned to a polar channel based at least in part on a channel index of the polar channel;
- and
- decode the set of information bits and the set of parity check bits based at least in part on the first and second subsets of polar channels of the set of polar channels.
Dependencies are inferred from the claim text.