Signature-enabled polar encoder and decoder
AssigneeHuawei Technologies Co., Ltd.
InventorsYIQUN GE, WUXIAN SHI
Life of this patent
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Abstract
A transmitter and receiver are provided for communication over a noisy channel in a wireless communications system. The transmitter and receiver use polar coding to provide reliability of data transmission over the noisy wireless channel. In addition, signature bits are inserted in some unreliable bit positions of the polar code. For a given codeword, the receiver with knowledge of the signature can more effectively decode the codeword. Cyclic redundancy check (CRC) bits may also included in the input vector to assist in decoding.
Claims28
An apparatus comprising:
- at least one processor configured to polar encode an input vector to produce a codeword, the input vector including information bits and one or more signature bits, at least one bit of the one or more signature bits being in a respective bit position of the input vector that has a lower reliability than a reliability of each bit position of the input vector for the information bits;
- and
- an output for outputting the codeword.
An apparatus comprising:
- an input for receiving a codeword produced based on a polar encoding an input vector including information bits and one or more signature bits, at least one bit of the one or more signature bits being in a respective bit position that has a lower reliability than a reliability of each bit position of the input vector for the information bits;
- and
- a polar code decoder configured to decode the received codeword to produce decoded bits.
A method comprising:
- polar encoding an input vector to produce a codeword, the input vector including information bits and one or more signature bits, at least one bit of the one or more signature bits being in a respective bit position of the input vector that has a lower reliability than a reliability of each bit position of the input vector for the information bits;
- and
- outputting the codeword.
A method comprising:
- receiving, by a receiver device, a codeword produced based on a polar encoding an input vector including information bits and one or more signature bits, at least one bit of the one or more signature bits being in a respective bit position that has a lower reliability than a reliability of each bit position of the input vector for the information bits;
- and
- polar decoding the received codeword to produce decoded bits.
Dependencies are inferred from the claim text.