Fully Optimized Code Block Segmentation Algorithm for LTE-Advanced
| Autor: | José A. B. Filho, Fabrício Lira Figueiredo, Karlo G. Lenzi, Felipe A. P. de Figueiredo |
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| Rok vydání: | 2014 |
| Předmět: |
Very-large-scale integration
biology business.industry Computer science Turbo Parallel computing biology.organism_classification Theoretical Computer Science LTE Advanced Code (cryptography) Segmentation Constant-weight code business Algorithm Software Digital signal processing Information Systems Block (data storage) |
| Zdroj: | International Journal of Parallel Programming. 43:988-1003 |
| ISSN: | 1573-7640 0885-7458 |
| DOI: | 10.1007/s10766-014-0324-7 |
| Popis: | In our previous work, we presented a brief analysis of the performance of the code block segmentation procedure adopted by the 3GPP LTE Advanced (LTE-A) Standard as part of its physical layer channel coding scheme. Here, a detailed analysis of its performance is offered along with a new approach to the LTE-A code block segmentation procedure. Code block segmentation is a generic procedure applied before turbo encoding whose function is to fragment a large transport block (TB) into smaller code blocks, reducing the decoding latency of turbo decoders (Sun et al. in Integr VLSI J 44(4):305---315, 2011). Analysis showed that only 39 % of all TBs need segmentation. Results based on two different architectures, one focused on a digital signal processors and the other on an field programmable gate array are compared and discussed. A new approach for code block segmentation is presented. This new approach exhibits a speed up of more than 83 times over previous and new approaches presented here. |
| Databáze: | OpenAIRE |
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