Processing math: 0%
On Tail-Biting Polarization-Adjusted Convolutional (TB-PAC) Codes and Small-Sizes List Decoding | IEEE Journals & Magazine | IEEE Xplore

On Tail-Biting Polarization-Adjusted Convolutional (TB-PAC) Codes and Small-Sizes List Decoding


Abstract:

Polarization-adjusted convolutional (PAC) coding is a good concatenation of convolutional codes and polar codes. For short block-length codes ( N\leq 128 ), PAC codes w...Show More

Abstract:

Polarization-adjusted convolutional (PAC) coding is a good concatenation of convolutional codes and polar codes. For short block-length codes ( N\leq 128 ), PAC codes with a sequential decoding or a list decoding with large list-sizes ( L\geq 128 ) can achieve better block-error-rate (BLER) performance than polar codes with CRC-aided list decoding. However, the PAC codes have no BLER performance advantage when the list decoding is with small list-sizes ( L\leq 8 ). In this letter, tail-biting PAC (TB-PAC) coding is proposed, in which tail-biting convolutional pre-transformation is applied. A multi-round list decoding with small list-sizes is provided for TB-PAC codes, in which an early-stopping method is designed to control the number of rounds. In each round, the tail-biting bits are assigned various initial path-values and also used as a check at the end, which helps the correct path be distinguishable. The proposed small-sizes list decoding can help the TB-PAC codes achieve much better BLER performance than the polar/PAC codes.
Published in: IEEE Communications Letters ( Volume: 27, Issue: 2, February 2023)
Page(s): 433 - 437
Date of Publication: 28 November 2022

ISSN Information:

Funding Agency:


References

References is not available for this document.