| 基于内存地址映射的并行交织器的改进算法 |
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| 引用本文： | 徐 可,茹国宝,甘良才.基于内存地址映射的并行交织器的改进算法[J].科学技术与工程,2015,15(3). |
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| 作者姓名： | 徐 可 茹国宝 甘良才 |
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| 作者单位： | 武汉大学电子信息学院,武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目(61072041) |
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| 摘 要： | 为了使具有高吞吐量特性的并行Turbo码译码得到应用,提出了并行无冲突交织器的数学模型,并由它得到一种改进的内存地址映射(IMM)方案,此方案能快捷高效地将传统的交织器变为并行交织器。仿真结果表明,相比传统的内存地址映射(MM)方案和优化的内存地址映射(OPMM)方案,IMM方案更加快速高效。在执行效率方面,IMM的效率比MM和OPMM分别提高了约96%和16%;在延时方面,IMM的延时比MM和OPMM分别降低至1/129和1/10。
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| 关 键 词： | 并行交织器 无冲突 内存地址映射 Turbo码译码 |
| 收稿时间： | 9/4/2014 12:00:00 AM |
| 修稿时间： | 2014/9/30 0:00:00 |
Improved algorithm for parallel interleavers based on memory address remapping |
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| XU Ke,RU Guo-bao and GAN Liang-cai.Improved algorithm for parallel interleavers based on memory address remapping[J].Science Technology and Engineering,2015,15(3). |
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| Authors: | XU Ke RU Guo-bao and GAN Liang-cai |
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| Abstract: | For the application of parallel turbo decoding with high throughput performance, this paper presents mathematical models for parallel collision-free interleavers, using which it develops an improved memory address remapping (IMM) scheme that enables a classic interleaver to be exchanged for a parallel interleaver readily and efficiently. As is shown in the simulation results, compared with the traditional memory address remapping (MM) method and the optimized memory address remapping (OPMM) scheme, the rate of IMM approach is much faster. The efficiency of IMM is increased by about 96% and 16% than MM and OPMM; the time delay of IMM is reduced by about 129 and 10 times than MM and OPMM. |
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| Keywords: | parallel interleaver collision-free memory address remapping turbo decoding |
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