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Fully Optimized Code Block Segmentation Algorithm for LTE-Advanced

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Abstract

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.

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Acknowledgments

The authors thanks the support given to this work, developed as part of the RASFA project, financed by the Fundo de Desenvolvimento das Telecomunicações - FUNTTEL, from the Brazilian Department of Communication, through the partnership no. 01.09.0631.00 with FINEP – Finaciadora de Estudos e Projetos.

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Authors and Affiliations

  1. Centre for Research and Development in Telecommunications (CPqD), Campinas, SP, Brazil

    Karlo G. Lenzi, Felipe A. P. Figueiredo, José A. Bianco Filho & Fabrício L. Figueiredo

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  1. Karlo G. Lenzi
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  2. Felipe A. P. Figueiredo
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  3. José A. Bianco Filho
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  4. Fabrício L. Figueiredo
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Correspondence to José A. Bianco Filho.

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Lenzi, K.G., Figueiredo, F.A.P., Bianco Filho, J.A. et al. Fully Optimized Code Block Segmentation Algorithm for LTE-Advanced. Int J Parallel Prog 43, 988–1003 (2015). https://doi.org/10.1007/s10766-014-0324-7

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  • DOI: https://doi.org/10.1007/s10766-014-0324-7

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