| 时频分布算法的并行实现 |
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| 引用本文： | 袁泉,石昭祥.时频分布算法的并行实现[J].微计算机信息,2006,22(34):271-273. |
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| 作者姓名： | 袁泉 石昭祥 |
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| 作者单位： | 电子工程学院602教研室,安徽,合肥,230037 |
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| 摘 要： | 二次时频分布(TFD)是一种常用的非平稳信号分析方法,以最常用的Wigner-Ville分布(WVD)为例,分析了离散时频分布算法实现,针对该算法的复杂性和计算量大的特点,实现了离散信号时频分布的并行算法,通过采用缓冲池和计算结果的压缩传输,同时减小了并行计算中传输数据总量和传输次数,将通信开销从O(N2)降低到O(N),解决了并行时频分布计算中数据传输“瓶颈”问题。
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| 关 键 词： | 时频分布 并行算法 内存管理 |
| 文章编号： | 1008-0570(2006)12-1-0271-03 |
| 修稿时间： | 2006年3月12日 |
Parallel Realization of Time-Frequency Distribution Algorithm |
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| YUAN QUAN,SHI ZHAOXIANG.Parallel Realization of Time-Frequency Distribution Algorithm[J].Control & Automation,2006,22(34):271-273. |
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| Authors: | YUAN QUAN SHI ZHAOXIANG |
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| Affiliation: | YUAN QUAN SHI ZHAOXIANG |
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| Abstract: | Quadratic Time- Frequency Distribution (TFD) is common analysis method for non- stationary signal. Discrete TFD is ana- lyzed in the example of Wigner- Ville Distribution. In view of the complexity and calculation amount of TFD algorithm, parallel WVD algorithm is realized.The buffer- pool and compressing data translation are used to decrease quantity and times of data translation. Communication spending is decreased from to. The bottle- neck problem of data translation is settled by the method. |
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| Keywords: | Parallel algorithm Time-frequency distribution memory manage |
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