Dynamic frozen bits and error detection for polar codes

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive a signal comprising a codeword encoded using a polar code, the codeword generated based at least in part on a plurality of dynamic frozen bits, a plurality of information bits, and a plurality of error detection bits for joint detection and decoding of the codeword;
• perform decoding of the codeword including at least:
• parity checking a first subset of decoding paths for making a decision on early termination of decoding of the codeword based at least in part on the plurality of dynamic frozen bits,
• generating path metrics for a second subset of the decoding paths that each pass the parity check based at least in part on the dynamic frozen bits, and
• performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at least in part on a representation of the plurality of error detection bits and the generated path metrics;
• and
• process the plurality of information bits based at least in part on a result of the decoding.

An apparatus for wireless communication, comprising:

• means for receiving a signal comprising a codeword encoded using a polar code, the codeword generated based at least in part on a plurality of dynamic frozen bits, a plurality of information bits, and a plurality of error detection bits for joint detection and decoding of the codeword;
• means for performing decoding of the codeword including at least:
• parity checking a first subset of decoding paths for making a decision on early termination of decoding of the codeword based at least in part on the plurality of dynamic frozen bits,
• generating path metrics for a second subset of the decoding paths that each pass the parity check based at least in part on the dynamic frozen bits, and
• performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at least in part on a representation of the plurality of error detection bits and the generated path metrics;
• and
• means for processing the plurality of information bits based at least in part on a result of the decoding.

A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

• receive a signal comprising a codeword encoded using a polar code, the codeword generated based at least in part on a plurality of dynamic frozen bits, a plurality of information bits, and a plurality of error detection bits for joint detection and decoding of the codeword;
• perform decoding of the codeword including at least:
• parity checking a first subset of decoding paths for making a decision on early termination of decoding of the codeword based at least in part on the plurality of dynamic frozen bits,
• generating path metrics for a second subset of the decoding paths that each pass the parity check based at least in part on the dynamic frozen bits, and
• performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at least in part on a representation of the plurality of error detection bits and the generated path metrics;
• and
• process the plurality of information bits based at least in part on a result of the decoding.