Nonbinary polar coding with partially frozen symbols
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiver device may receive encoded symbols, encoded using nonbinary polar coding, that include a set of information symbols, a set of partially frozen symbols, and a set of frozen symbols, where the set of information symbols and the set of partially frozen symbols indicate information bits, and where the set of information symbols indicate values in a set of values, and the set of partially frozen symbols indicate values in a proper subset of the set of values. The receiver device may decode the information bits from the encoded symbols. Numerous other aspects are described.
1 . An apparatus for wireless communication at a receiver device, comprising:
one or more memory components; and
one or more processors, coupled to the one or more memory components, which are configured, individually or in any combination, to:
receive encoded symbols, encoded using nonbinary polar coding, that include a set of information symbols, a set of partially frozen symbols, and a set of frozen symbols,
wherein the set of information symbols and the set of partially frozen symbols indicate information bits,
wherein the set of information symbols indicate values in a set of values, and the set of partially frozen symbols indicate values in a proper subset of the set of values, and
wherein each information symbol, of the set of information symbols, indicates two bits of data; and
decode the information bits from the encoded symbols.
2 . The apparatus of claim 1 , wherein each partially frozen symbol, of the set of partially frozen symbols, indicates less than two bits of data.
3 . The apparatus of claim 1 , wherein an information symbol, of the set of information symbols, has four possible values, and a partially frozen symbol, of the set of partially frozen symbols, has two possible values or three possible values.
4 . The apparatus of claim 1 , wherein a quantity of partially frozen symbols in the set of partially frozen symbols is according to a code rate.
5 . The apparatus of claim 1 , wherein positions of information symbols, of the set of information symbols, and of partially frozen symbols, of the set of partially frozen symbols, in the encoded symbols are in accordance with a reliability sequence.
6 . The apparatus of claim 1 , wherein the one or more processors, to cause the receiver device to decode the information bits from the encoded symbols, are configured to:
decode the information bits from the encoded symbols by processing partially frozen symbols, of the set of partially frozen symbols, on a per-symbol basis.
7 . The apparatus of claim 1 , wherein the one or more processors, to cause the receiver device to decode the information bits from the encoded symbols, are configured to:
decode the information bits from the encoded symbols by processing partially frozen symbols, of the set of partially frozen symbols, in symbol pairs.
8 . The apparatus of claim 1 , wherein the one or more processors are further configured to:
communicate configuration information indicating that partially frozen symbols are to be used.
9 . The apparatus of claim 1 , wherein the one or more processors are further configured to:
communicate a capabilities report indicating a capability to use partially frozen symbols.
10 . An apparatus for wireless communication at a transmitter device, comprising:
one or more memory components; and
one or more processors, coupled to the one or more memory components, which are configured, individually or in any combination, to:
encode information bits using nonbinary polar coding to generate encoded symbols that include a set of information symbols, a set of partially frozen symbols, and a set of frozen symbols,
wherein the set of information symbols and the set of partially frozen symbols indicate the information bits,
wherein the set of information symbols indicate values in a set of values, and the set of partially frozen symbols indicate values in a proper subset of the set of values, and
each information symbol, of the set of information symbols, indicates two bits of data; and
transmit the encoded symbols.
11 . The apparatus of claim 10 , wherein each partially frozen symbol, of the set of partially frozen symbols, indicates less than two bits of data.
12 . The apparatus of claim 10 , wherein an information symbol, of the set of information symbols, has four possible values, and a partially frozen symbol, of the set of partially frozen symbols, has two possible values or three possible values.
13 . The apparatus of claim 10 , wherein a quantity of partially frozen symbols in the set of partially frozen symbols is according to a code rate.
14 . The apparatus of claim 10 , wherein positions of information symbols, of the set of information symbols, and of partially frozen symbols, of the set of partially frozen symbols, in the encoded symbols are in accordance with a reliability sequence.
15 . The apparatus of claim 10 , wherein the one or more processors are further configured to:
communicate configuration information indicating that partially frozen symbols are to be used.
16 . The apparatus of claim 10 , wherein the one or more processors are further configured to:
communicate a capabilities report indicating a capability to use partially frozen symbols.
17 . A method of wireless communication performed by a receiver device, comprising:
receiving encoded symbols, encoded using nonbinary polar coding, that include a set of information symbols, a set of partially frozen symbols, and a set of frozen symbols,
wherein the set of information symbols and the set of partially frozen symbols indicate information bits,
wherein the set of information symbols indicate values in a set of values, and the set of partially frozen symbols indicate values in a proper subset of the set of values, and
wherein each information symbol, of the set of information symbols, indicates two bits of data; and
decoding the information bits from the encoded symbols.
18 . The method of claim 17 , wherein each partially frozen symbol, of the set of partially frozen symbols, indicates less than two bits of data.
19 . The method of claim 17 , wherein an information symbol, of the set of information symbols, has four possible values, and a partially frozen symbol, of the set of partially frozen symbols, has two possible values or three possible values.
20 . The method of claim 17 , wherein a quantity of partially frozen symbols in the set of partially frozen symbols is according to a code rate.