Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment
Online bit error rate (BER) estimation (OBE) has been used as a stopping iterative turbo decoding criterion. However, the stopping criteria only work at high signal-to-noise ratios (SNRs), and fail to have early termination at low SNRs, which contributes to an additional iteration number and an incr...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Walter de Gruyter GmbH
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/63572/ http://psasir.upm.edu.my/id/eprint/63572/1/Threshold-based%20bit%20error%20rate%20for%20stopping%20iterative%20turbo%20decoding%20in%20a%20varying%20SNR%20environment.pdf |
| _version_ | 1848854821016174592 |
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| author | Mohamad, Roslina Harun, Harlisya Mokhtar, Makhfudzah Adnan, Wan Azizun Wan Dimyati, Kaharudin |
| author_facet | Mohamad, Roslina Harun, Harlisya Mokhtar, Makhfudzah Adnan, Wan Azizun Wan Dimyati, Kaharudin |
| author_sort | Mohamad, Roslina |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Online bit error rate (BER) estimation (OBE) has been used as a stopping iterative turbo decoding criterion. However, the stopping criteria only work at high signal-to-noise ratios (SNRs), and fail to have early termination at low SNRs, which contributes to an additional iteration number and an increase in computational complexity. The failure of the stopping criteria is caused by the unsuitable BER threshold, which is obtained by estimating the expected BER performance at high SNRs, and this threshold does not indicate the correct termination according to convergence and non-convergence outputs (CNCO). Hence, in this paper, the threshold computation based on the BER of CNCO is proposed for an OBE stopping criterion (OBEsc). From the results, OBEsc is capable of terminating early in a varying SNR environment. The optimum number of iterations achieved by the OBEsc allows huge savings in decoding iteration number and decreasing the delay of turbo iterative decoding. |
| first_indexed | 2025-11-15T11:15:57Z |
| format | Article |
| id | upm-63572 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:15:57Z |
| publishDate | 2017 |
| publisher | Walter de Gruyter GmbH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-635722018-11-05T02:22:17Z http://psasir.upm.edu.my/id/eprint/63572/ Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment Mohamad, Roslina Harun, Harlisya Mokhtar, Makhfudzah Adnan, Wan Azizun Wan Dimyati, Kaharudin Online bit error rate (BER) estimation (OBE) has been used as a stopping iterative turbo decoding criterion. However, the stopping criteria only work at high signal-to-noise ratios (SNRs), and fail to have early termination at low SNRs, which contributes to an additional iteration number and an increase in computational complexity. The failure of the stopping criteria is caused by the unsuitable BER threshold, which is obtained by estimating the expected BER performance at high SNRs, and this threshold does not indicate the correct termination according to convergence and non-convergence outputs (CNCO). Hence, in this paper, the threshold computation based on the BER of CNCO is proposed for an OBE stopping criterion (OBEsc). From the results, OBEsc is capable of terminating early in a varying SNR environment. The optimum number of iterations achieved by the OBEsc allows huge savings in decoding iteration number and decreasing the delay of turbo iterative decoding. Walter de Gruyter GmbH 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/63572/1/Threshold-based%20bit%20error%20rate%20for%20stopping%20iterative%20turbo%20decoding%20in%20a%20varying%20SNR%20environment.pdf Mohamad, Roslina and Harun, Harlisya and Mokhtar, Makhfudzah and Adnan, Wan Azizun Wan and Dimyati, Kaharudin (2017) Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment. Frequenz, 71 (1-2). 83 - 94. ISSN 0016-1136; ESSN: 2191-6349 https://www.degruyter.com/view/j/freq.ahead-of-print/freq-2016-0018/www.degruyter.com/view/j/freq.ahead-of-print/freq-2016-0018/freq-2016-0018.xml 10.1515/freq-2016-0018 |
| spellingShingle | Mohamad, Roslina Harun, Harlisya Mokhtar, Makhfudzah Adnan, Wan Azizun Wan Dimyati, Kaharudin Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title | Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title_full | Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title_fullStr | Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title_full_unstemmed | Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title_short | Threshold-based bit error rate for stopping iterative turbo decoding in a varying SNR environment |
| title_sort | threshold-based bit error rate for stopping iterative turbo decoding in a varying snr environment |
| url | http://psasir.upm.edu.my/id/eprint/63572/ http://psasir.upm.edu.my/id/eprint/63572/ http://psasir.upm.edu.my/id/eprint/63572/ http://psasir.upm.edu.my/id/eprint/63572/1/Threshold-based%20bit%20error%20rate%20for%20stopping%20iterative%20turbo%20decoding%20in%20a%20varying%20SNR%20environment.pdf |