| Blackfin平台上V.17调制解调器的实现与优化 |
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| 引用本文： | 邢志岩,孙建伟.Blackfin平台上V.17调制解调器的实现与优化[J].小型微型计算机系统,2012,33(3):660-663. |
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| 作者姓名： | 邢志岩 孙建伟 |
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| 作者单位： | 1. 中国科学院沈阳计算技术研究所网络与通信室,沈阳110171;中国科学院研究生院,北京100039
2. 中国科学院沈阳计算技术研究所网络与通信室,沈阳,110171 |
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| 摘 要： | 介绍V.17调制解调算法的原理,给出V.17在Blackfin532+uClinux平台上的软件实现,并针对Blackfin平台提出相应的优化方案.该方案主要针对Blackfin处理器的定点特性、分层的存储器架构、支持并行指令等特性进行了优化.优化后的调制解调器减少了对系统资源的占用量,而且性能也提升了约3倍.目前已应用到语音网关的传真Modem中.
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| 关 键 词： | ITU-TV.17 QAM Blackfin532 优化 传真 |
Implementation and Optimization of V.17 Modem Based on Blackfin |
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| XING Zhi-yan
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SUN Jian-wei.Implementation and Optimization of V.17 Modem Based on Blackfin[J].Mini-micro Systems,2012,33(3):660-663. |
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| Authors: | XING Zhi-yan SUN Jian-wei |
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| Affiliation: | 1(Shenyang Institute of Computing Technology,Chinese Academy of Science,Shenyang 110171,China) 2(Graduate School of the Chinese Academy of Science,Beijing 100039,China) |
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| Abstract: | This paper introduces ITU-T V.17,presents an implementation of V.17 soft modem based on Blackfin532+uClinux,and proposes an optimization method according to the characters of Blackfin532,such as processor features,tiered storage architecture and parallel instructions.The optimized modem’s occupation of the system resources is reduced,and the performance is about 3 times better.Now it is applied to the fax modem in the voice gateway. |
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| Keywords: | ITU-T V 17 QAM blackfin532 optimization fax |
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