發(fā)布時(shí)間：2018-02-22 09:25

  本文關(guān)鍵詞： 信號(hào)處理 快速傅里葉變換 小波變換 多核嵌入式系統(tǒng) 并行計(jì)算　出處：《計(jì)算機(jī)工程與應(yīng)用》2017年04期 　論文類型：期刊論文

【摘要】：快速小波變換是數(shù)字信號(hào)處理面臨的一個(gè)重要問(wèn)題,針對(duì)并行小波算法展開(kāi)研究,縮減小波變換中卷積運(yùn)算的規(guī)模,提高小波變換過(guò)程中的并行效能,以實(shí)現(xiàn)小波變換的快速并行計(jì)算。通過(guò)FFT矩陣代入計(jì)算,消去了并行計(jì)算過(guò)程中的同步通信,降低了乘法運(yùn)算次數(shù)。對(duì)算法思想進(jìn)行了理論分析,說(shuō)明新算法在短小數(shù)據(jù)分段情況下能夠減少50%~75%的乘法操作;通過(guò)搭建兩種不同平臺(tái)進(jìn)行了對(duì)比測(cè)試,證明了算法的先進(jìn)性與有效性�；贔FT矩陣的并行小波變換算法是一種穩(wěn)定有效的經(jīng)典小波并行算法。
[Abstract]:Fast wavelet transform is an important problem in digital signal processing. Research on parallel wavelet algorithm is carried out to reduce the scale of convolution operation in wavelet transform and to improve the parallel efficiency in the process of wavelet transform. In order to realize the fast parallel computation of wavelet transform, the synchronous communication in the parallel computing process is eliminated and the multiplicative operation times are reduced through the FFT matrix substitution calculation. It shows that the new algorithm can reduce the multiplication operation by 50% and 75% in the case of short data segmentation. It is proved that the algorithm is advanced and effective. The parallel wavelet transform algorithm based on FFT matrix is a stable and effective classical wavelet parallel algorithm.
【作者單位】： 中南大學(xué)信息科學(xué)與工程學(xué)院;廣州大學(xué)計(jì)算機(jī)科學(xué)與教育軟件學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(No.61073037,No.61272496,No.61272151) 教育部博士點(diǎn)基金資助項(xiàng)目(No.20110162110043)
【分類號(hào)】：TN911.7

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