ReconstructionMethodofMultichannel NonuniformSampling Signals

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ReconstructionMethodofMultichannel NonuniformSampling Signals

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[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 34卷 Number of periods: 2013 06 Page number: 10-14 Column: Public date: 2013-12-30

Title:: ReconstructionMethodofMultichannel NonuniformSampling Signals

Author(s):: LI Yu-ling; ZHAI Pan—pan; College of Computer and Information Engineering，Henan University，Kaifeng 475004，China

Keywords:: muhichannel sampling; quantization; uniform sampling; reconstruction

CLC:: TP302

DOI:: 10.3969/j.issn.1671-6833.2013.06.003

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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