How much data is needed for blind system identification? : DSP
This is a discussion on How much data is needed for blind system identification? within the DSP forums in Other Technologies category; Hello! I'm trying to implement a blind systems identification method. Does anyone know how to estimate the minimum length of the data needed? Currently I'm using two 10 second signals with fs = 50 Hz. regards /Baba...
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#1
06-29-2007, 06:05 AM
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 How much data is needed for blind system identification? I'm trying to implement a blind systems identification method. Does anyone know how to estimate the minimum length of the data needed? Currently I'm using two 10 second signals with fs = 50 Hz. regards /Baba |
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#2
06-29-2007, 08:58 AM
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| Re: How much data is needed for blind system identification? On Jun 29, 6:05 am, "Baba" <carth...@student.liu.se> wrote: > Hello! > I'm trying to implement a blind systems identification method. Does anyone > know how to estimate the minimum length of the data needed? Currently I'm > using two 10 second signals with fs = 50 Hz. > regards > /Baba This question is meaningless without further specification of how much your tolerance is, and how much uncertainty your system/observation has ;-). Julius |
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#3
06-29-2007, 09:38 AM
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| Re: How much data is needed for blind system identification? Baba wrote: > Hello! > I'm trying to implement a blind systems identification method. Does anyone > know how to estimate the minimum length of the data needed? If the system has N parameters, then you need N points of data at the very least. In fact, you may need much more data depending on what is the system and what is the signal. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com |
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#4
06-29-2007, 09:54 AM
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| Re: How much data is needed for blind system identification? Ok, thanks very much for pointing out these things /Baba |
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