引用本文: | 夏飞,聂晶,李荣春,等.现场可编程门阵列参数化多标准高吞吐率基4 Viterbi译码器[J].国防科技大学学报,2016,38(1):86-92.[点击复制] |
XIA Fei,NIE Jing,LI Rongchun,et al.Parameterized multi-standard high-throughput radix-4 Viterbi decoder on field-programmable gate array[J].Journal of National University of Defense Technology,2016,38(1):86-92[点击复制] |
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现场可编程门阵列参数化多标准高吞吐率基4 Viterbi译码器 |
夏飞1, 聂晶1, 李荣春2, 王文涛3 |
(1.海军工程大学 电子工程学院, 湖北 武汉 430033;2. 国防科技大学 计算机学院, 湖南 长沙 410073;3.中国人民解放军91033部队, 山东 青岛 266034)
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摘要: |
为了同时达到高性能和灵活性的目标,提出一种基于现场可编程门阵列的参数化多标准自适应基4 Viterbi译码器。译码器采用3~9可变约束长度,1/2、1/3可变码率,支持任意截断长度的纠错译码,并采用码字无符号量化、加比选单元设计优化和归一化判断逻辑分离策略优化关键路径设计,提高译码器工作频率。实验结果表明,该译码器能根据用户设定的参数改变结构,在多种通信标准之间实现动态切换;性能达到了541 Mbps,明显优于相关工作;对GPRS,WiMAX,LTE,CDMA,3G等通信标准都取得了良好的误码性能,可满足多种通信标准的译码需求。 |
关键词: 现场可编程门阵列 Viterbi译码器 参数化 多标准 基4 |
DOI:10.11887/j.cn.201601015 |
投稿日期:2015-02-13 |
基金项目:国家自然科学基金资助项目(61202127);湖南省学位与研究生教育专项基金资助项目(YB2013B008) |
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Parameterized multi-standard high-throughput radix-4 Viterbi decoder on field-programmable gate array |
XIA Fei1, NIE Jing1, LI Rongchun2, WANG Wentao3 |
(1. Electronic Engineering College, Naval University of Engineering, Wuhan 430033, China;2. College of Computer Science, National University of Defense Technology, Changsha 410073, China;3. The PLA Unit 91033, Qingdao 266034, China)
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Abstract: |
To achieve the goal of high performance and flexibility, a parameterized multi-standard adaptive radix-4 Viterbi decoder based on the field-programmable gate array was presented. This decoder adopts constraint lengths ranging from 3 to 9, code rates of 1/2 or 1/3 and supports error-correcting decoding of arbitrary truncation lengths. The unsigned quantization, add-compare-select unit optimization and normalization judgment logic separation strategies were used to optimize the design of critical path, so that it can improve system throughput. Experiment results show that: the decoder can change the structures according to the parameters set by users and achieve dynamic switching in multiple communication standards; the throughput can reach up to 541 Mbps, apparently superior to the related works; the decoder achieves low bit error ratio in multiple standards such as GPRS, WiMax, LTE, CDMA and 3G and satisfies the decoding requirements of multiple communication standards. |
Keywords: field-programmable gate array Viterbi decoder parameterization multi-standard radix-4 |
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