[1]李玉玲,翟盼盼..交错多通道采样信号的分析与重构方法[J].郑州大学学报(工学版),2013,34(06):10-14.[doi:10.3969/j.issn.1671-6833.2013.06.003]
　LI Yu-ling,ZHAI Panpan.ReconstructionMethodofMultichannel NonuniformSampling Signals[J].Journal of Zhengzhou University (Engineering Science),2013,34(06):10-14.[doi:10.3969/j.issn.1671-6833.2013.06.003]

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交错多通道采样信号的分析与重构方法()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

34

期数:

2013年06期

页码:

10-14

栏目:

出版日期:

2013-12-30

文章信息/Info

Title:

ReconstructionMethodofMultichannel NonuniformSampling Signals

作者:

李玉玲; 翟盼盼.

河南大学计算机与信息工程学院,河南开封,475004, 河南大学计算机与信息工程学院,河南开封,475004

Author(s):

LI Yu-ling; ZHAI Pan—pan

College of Computer and Information Engineering，Henan University，Kaifeng 475004，China

关键词:

多通道采样;  量化;  均匀采样;  重构

Keywords:

muhichannel sampling; quantization; uniform sampling; reconstruction

分类号:

TP302

DOI:

10.3969/j.issn.1671-6833.2013.06.003

文献标志码:

A

摘要:

交错多通道采样中,通道间时间延迟的不同易导致产生均匀采样或非均匀采样,现有的重构算法运算量较大,容易使信号在重构过程中出现较大的性能退化.首先对通道中的信号量化噪声比(SQNR)进行分析,提出一种信号重构算法;其次分析了应用此算法的通道间的量化步长、时间延迟及过采样率,论证在量化步长相同的情况下,只有均匀采样可以达到最优重构;最后分析非均匀采样的情况,确定如何选择参数以达到最优重构.

Abstract:

This paper considers interleaved muhchannel measurements as arise，for example，in time-inter— leaved analog-to-digital converters and in distributed sensornetworks．This system takesthe form of either uni— form or recurrent Nonuniform sampling，depending on the relative timing between the channels．Uniform quantization in each channelresults in all effectiveoverall signal·-to-·quantization—-error in thereconstructed out·putwhich is dependenton the quantizer step size in each channel，the relative timing between the channels andthe oversampling ratio．It is shown that in the multi-channel sampling system when the quantization step size is notrestricted to be the samein each channeland the channel timing is not constrainedto correspond to uniform sampling，it often reducesthe SQNR relative to uniformcase．

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