| 短时DFT压扩器及其快速算法 |
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| 引用本文： | 袁晓辉,夏良正. 短时DFT压扩器及其快速算法[J]. 东南大学学报(自然科学版), 1995, 0(4) |
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| 作者姓名： | 袁晓辉 夏良正 |
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| 作者单位： | 东南大学自动控制系 |
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| 基金项目： | 国家教委留学回国人员基金 |
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| 摘 要： | 针对传统压扩器需要检测峰值并存在混调误差、短时ＤＦＴ压扩器运算量大、计算效率低等问题，本文通过对传输信号进行序号模运算和引入循环相关，构造了一种新的高速化短时ＤＦＴ压扩器，在保证提高传输信号信噪比的前提下，有效地减少了频域压扩运算量和提高了计算效率，具有较大的理论意义和实用价值。
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| 关 键 词： | 压缩扩张器；傅里叶变换；快速变换 |
Short Time DFT Compander and Its Fast Algorithm |
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| Yuan Xiaohui,Xia Liangzheng. Short Time DFT Compander and Its Fast Algorithm[J]. Journal of Southeast University(Natural Science Edition), 1995, 0(4) |
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| Authors: | Yuan Xiaohui Xia Liangzheng |
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| Abstract: | The conventional companders are suffered from intermodulation distortion owins to esti-mating signal envelope,and the short time DFT compoder is afflieted with the great deal of computa-tion.In this papor,a new high-speed short time DFT compander is realized by deducirig the module cal-culation of time variable and employing the circular correlation.It not only improves the SNR but alsogreatly reduces the aniount of computation. |
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| Keywords: | compander Fourier transform fast transformation |
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