Boosting the error performance of suboptimal tailbiting decoders
(2003) In IEEE Transactions on Communications 51(9). p.1485-1491- Abstract
- Tailbiting is an attractive method to terminate convolutional codes without reducing the code rate. Maximum-likelihood and exact a posteriori probability decoding of tailbiting codes implies, however, a large computational complexity. Therefore, suboptimal decoding methods are often used in practical coding schemes. It is shown that suboptimal decoding methods work better when the slope of the active distances of the generating convolutional encoder is large. Moreover, it is shown that considering quasi-cyclic shifts of the received channel output can increase the performance of suboptimal tailbiting decoders. The findings are most relevant to tailbiting codes where the number of states is not small relative to the block length.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/300183
- author
- Handlery, Marc LU ; Johannesson, Rolf LU and Zyablov, V V
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- active distance, suboptimal decoding, tailbiting code
- in
- IEEE Transactions on Communications
- volume
- 51
- issue
- 9
- pages
- 1485 - 1491
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000185418500013
- scopus:0141920362
- ISSN
- 0090-6778
- DOI
- 10.1109/TCOMM.2003.816996
- language
- English
- LU publication?
- yes
- id
- 5b8c60b7-00d8-476e-94bc-44d22af14abc (old id 300183)
- date added to LUP
- 2016-04-01 16:40:39
- date last changed
- 2022-01-28 21:23:05
@article{5b8c60b7-00d8-476e-94bc-44d22af14abc, abstract = {{Tailbiting is an attractive method to terminate convolutional codes without reducing the code rate. Maximum-likelihood and exact a posteriori probability decoding of tailbiting codes implies, however, a large computational complexity. Therefore, suboptimal decoding methods are often used in practical coding schemes. It is shown that suboptimal decoding methods work better when the slope of the active distances of the generating convolutional encoder is large. Moreover, it is shown that considering quasi-cyclic shifts of the received channel output can increase the performance of suboptimal tailbiting decoders. The findings are most relevant to tailbiting codes where the number of states is not small relative to the block length.}}, author = {{Handlery, Marc and Johannesson, Rolf and Zyablov, V V}}, issn = {{0090-6778}}, keywords = {{active distance; suboptimal decoding; tailbiting code}}, language = {{eng}}, number = {{9}}, pages = {{1485--1491}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Communications}}, title = {{Boosting the error performance of suboptimal tailbiting decoders}}, url = {{http://dx.doi.org/10.1109/TCOMM.2003.816996}}, doi = {{10.1109/TCOMM.2003.816996}}, volume = {{51}}, year = {{2003}}, }