ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS
This paper presents a new method for stopping the iterative turbo decoding. First, a bit-level convergence test using the cross-entropy analyses is used to select non converged bits and establish a simple and effective stopping rule. Next, an adaptive approach is used to compute a scaling factor for...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
ICT Academy of Tamil Nadu
2016-06-01
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| Series: | ICTACT Journal on Communication Technology |
| Subjects: | |
| Online Access: | http://ictactjournals.in/paper/IJCT_V7_I2_paper2_1295_1300.pdf |
| _version_ | 1818132938426941440 |
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| author | Imed Amamra Nadir Derouiche |
| author_facet | Imed Amamra Nadir Derouiche |
| author_sort | Imed Amamra |
| collection | DOAJ |
| description | This paper presents a new method for stopping the iterative turbo decoding. First, a bit-level convergence test using the cross-entropy analyses is used to select non converged bits and establish a simple and effective stopping rule. Next, an adaptive approach is used to compute a scaling factor for normalizing the extrinsic information of the previously selected bits. The extra coding gain obtained from this normalization can compensate for the performance degradation of the stopping rule. The simulation results of the proposed stopping criterion show an interesting application in a hybrid automatic repeat request systems with turbo coding scheme, where the decoding complexity can be fairly reduced.
Simulation results of the proposed criterion, in comparison with previously published stopping rules, were presented for illustrating the adaptive termination according to a changing SNR environment. |
| first_indexed | 2024-12-11T08:44:47Z |
| format | Article |
| id | doaj.art-d4e618f460744e349d90ff4e57d285d0 |
| institution | Directory Open Access Journal |
| issn | 0976-0091 2229-6948 |
| language | English |
| last_indexed | 2024-12-11T08:44:47Z |
| publishDate | 2016-06-01 |
| publisher | ICT Academy of Tamil Nadu |
| record_format | Article |
| series | ICTACT Journal on Communication Technology |
| spelling | doaj.art-d4e618f460744e349d90ff4e57d285d02022-12-22T01:14:10ZengICT Academy of Tamil NaduICTACT Journal on Communication Technology0976-00912229-69482016-06-017212951300ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMSImed Amamra0Nadir Derouiche1Université of 20 Août 1955 of Skikda, AlgeriaUniversité of 20 Août 1955 of Skikda, AlgeriaThis paper presents a new method for stopping the iterative turbo decoding. First, a bit-level convergence test using the cross-entropy analyses is used to select non converged bits and establish a simple and effective stopping rule. Next, an adaptive approach is used to compute a scaling factor for normalizing the extrinsic information of the previously selected bits. The extra coding gain obtained from this normalization can compensate for the performance degradation of the stopping rule. The simulation results of the proposed stopping criterion show an interesting application in a hybrid automatic repeat request systems with turbo coding scheme, where the decoding complexity can be fairly reduced. Simulation results of the proposed criterion, in comparison with previously published stopping rules, were presented for illustrating the adaptive termination according to a changing SNR environment.http://ictactjournals.in/paper/IJCT_V7_I2_paper2_1295_1300.pdfCross EntropyHARQIterative DecodingStopping CriterionLogMAPTurbo Code |
| spellingShingle | Imed Amamra Nadir Derouiche ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS ICTACT Journal on Communication Technology Cross Entropy HARQ Iterative Decoding Stopping Criterion LogMAP Turbo Code |
| title | ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS |
| title_full | ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS |
| title_fullStr | ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS |
| title_full_unstemmed | ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS |
| title_short | ENHANCEMENT OF ITERATIVE TURBO DECODING FOR HARQ SYSTEMS |
| title_sort | enhancement of iterative turbo decoding for harq systems |
| topic | Cross Entropy HARQ Iterative Decoding Stopping Criterion LogMAP Turbo Code |
| url | http://ictactjournals.in/paper/IJCT_V7_I2_paper2_1295_1300.pdf |
| work_keys_str_mv | AT imedamamra enhancementofiterativeturbodecodingforharqsystems AT nadirderouiche enhancementofiterativeturbodecodingforharqsystems |