Error detection for a wireless channel

An apparatus for wireless communication, comprising:

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, at a decoder, a signal that comprises a plurality of error detection values and a plurality of information values;
• decode, using a polar code, one or more information values of the plurality of information values received in the signal;
• determine one or more coefficients associated with an expected error detection value as part of an error check for the one or more information values, wherein each coefficient of the one or more coefficients is associated with an information value of the one or more information values;
• determine a first error detection value based at least in part on the one or more coefficients associated with the one or more information values, wherein the first error detection value comprises the expected error detection value;
• decode, using the polar code, a second error detection value of the plurality of error detection values received in the signal, the second error detection value associated with the error check for the one or more information values received in the signal;
• determine that the second error detection value received in the signal and associated with the error check for the one or more information values is different than the first error detection value;
• and
• terminate a decoding of remaining portions of the signal at the decoder that uses the polar code based at least in part on the first error detection value and the second error detection value.

An apparatus for wireless communication, comprising:

• means for receiving, at a decoder, a signal that comprises a plurality of error detection values and a plurality of information values;
• means for decoding, using a polar code, one or more information values of the plurality of information values received in the signal;
• means for determining one or more coefficients associated with an expected error detection value as part of an error check for the one or more information values, wherein each coefficient of the one or more coefficients is associated with an information value of the one or more information values;
• means for determining a first error detection value based at least in part on the one or more coefficients associated with the one or more information values, wherein the first error detection value comprises the expected error detection value;
• means for decoding, using the polar code, a second error detection value of the plurality of error detection values received in the signal, the second error detection value associated with the error check for the one or more information values received in the signal;
• means for determining that the second error detection value received in the signal and associated with the error check for the one or more information values is different than the first error detection value;
• and
• means for terminating a decoding of remaining portions of the signal at the decoder that uses the polar code based at least in part on the first error detection value and the second error detection value.

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

• receive, at a decoder, a signal that comprises a plurality of error detection values and a plurality of information values;
• decode, using a polar code, one or more information values of the plurality of information values received in the signal;
• determine one or more coefficients associated with an expected error detection value as part of an error check for the one or more information values, wherein each coefficient of the one or more coefficients is associated with an information value of the one or more information values;
• determine a first error detection value based at least in part on the one or more coefficients associated with the one or more information values, wherein the first error detection value comprises the expected error detection value;
• decode, using the polar code, a second error detection value of the plurality of error detection values received in the signal, the second error detection value associated with the error check for the one or more information values received in the signal;
• determine that the second error detection value received in the signal and associated with the error check for the one or more information values is different than the first error detection value;
• and
• terminate a decoding of remaining portions of the signal at the decoder that uses the polar code based at least in part on the first error detection value and the second error detection value.