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SNR Calculation using CADENCE SpectreS tool
by Unknown on Mar 26, 2004 |
Not available! | ||
|
Hi,
I need some help to write matlab code for calculating SNR of an adc.I
am using coherent sampling i.e. integral no. of input signal periods.I
perform an fft on the data samples.Please tell me how many bins we
have to consider to extract signal component.Also how do we extract
harmonic power from this.
Thanks in advance
Neha
----- Original Message -----
From: stevepkwong at h...
To: cores at o...
Date: Sat, 27 Sep 2003 06:20:10 +0200
Subject: Re: [oc] SNR Calculation using CADENCE SpectreS tool
----- Original Message -----
From: ghittori at e...
To: cores at o...
Date: Mon, 30 Jun 2003 11:24:07 -0100
Subject: Re: [oc] SNR Calculation using CADENCE SpectreS tool
>
> > Hi, > > have you got an example of Matlab routine for the SNR calculation?
> I',
> not able to find a general way to extract the signal component from
> my
> frame of data (the signal is always located in more frequency bins)
>
> Thank you for yor help,
>
> Nicola
>
>
>
> ----- Original Message -----
> From: gu2 at u...
> To: cores at o...
> Date: Tue, 28 May 2002 00:29:27 +0200
> Subject: Re: [oc] SNR Calculation using CADENCE SpectreS tool
>
>
> > Hi, > > You may first sample you datas from your modulator output > using 'sample' function and save them, then you can calculate
> SNR
> with
> MATLAB.
>
> Hope this helps
> gu
> ----- Original Message -----
> From: adesh_b at a...
> To: cores at o...
> Date: Wed, 20 Feb 2002 21:27:53 +0100
> Subject: Re: [oc] SNR Calculation using CADENCE SpectreS
tool
>
> >
> > > > did u find a way to determine the snr of a signal using
> matlab
> > tools whether using the commands or in simulink.
> > If so please provide me with help.
> > send reply to:
> >
> > adesh_b at a...
> >
> > thank u!
> >
> > ----- Original Message -----
> > From: electronicszone at y...
> > To: cores at o...
> > Date: Fri, 3 Aug 2001 16:19:18 +0200
> > Subject: [oc] SNR Calculation using CADENCE SpectreS
tool
> >
> >
> > > > Dear Sir, > > I am working on a > Sigma-delta
> ADC.
> > Currently I am working on CADENCE
> spectreS
> tool
> > to
> > simulate the modulator.
> > > I
> > have a
> > second order modulator . The bandwidth of the
input
> is
> > 12.5MHz. The
> > oversampling ratio is only four (so sampling
freq.
> is
> 100MHz).
> > I am
> > working on a cascaded (MASH) modulator in which
the
> second
> > stage is
> > a 10-bit Pipelined ADC. The flash ADC inside
the
> modulator is
> > a
> > 4-bit one. Currently, I have designed the 2nd
order
> modulator
> > using
> > Switched capacitor filters. Now, I want to
> calculate the
> > Signal to
> > Noise ratio at the output of the Modulator.
Can you
> please
> > help me
> > how to calculate SNR using CADENCE? Since, I
have
> just
> started
> > working on CADENCE, i don't know much the
features
> of
> this
> > tool.
> > While doing its
behavioral
> simulation in MATLAB, i used
> > the
> > PSD command in the MATLAB and since I know the
input
> signal
> > frequency, I calculated the signal power and
the
> rest as
> the
> > Noise
> > power to get the SNR. I thought to use that SNR
> routine
> only
> > (as i
> > used in MATLAB) to calculate the SNR of the
output
> of the
> > modulator
> > generated in CADENCE spectreS tool. But the
problem
> is
> that
> > this
> > tool, during its transient analysis, does not
> generate
> samples
> > at
> > regular interval. So, i cant use the PSD
command
> available in
> > MATLAB to calculate the PSD of the output of
the
> modulator to
> > calculate the SNR.
> > Sir, please give me a suitable solution for the
> same.
> > waiting for a positive reply.
> > Thanking You > > Yours sincerely > > Lokesh Kumath > > > > > > |
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SNR Calculation using CADENCE SpectreS tool
by andrew on Jun 28, 2004 |
andrew
Posts: 3 Joined: Jul 10, 2008 Last seen: Jan 6, 2013 |
||
|
Hi
An useful site to help with this is http://www.maxim-
ic.com/appnotes.cfm/appnote_number/729 . Look down the page for
Matlab code. If you look you will find how many bins they used to get
the signal and harmonic power.
Hope this helps
Andrew
----- Original Message -----
From: bhargav_neha at y...bhargav_neha at y...>
To:
Date: Fri Mar 26 11:25:40 CET 2004
Subject: [oc] SNR Calculation using CADENCE SpectreS tool
Hi,
I need some help to write matlab code for calculating SNR of an
adc.I
am using coherent sampling i.e. integral no. of input signal
periods.I
perform an fft on the data samples.Please tell me how many bins we
have to consider to extract signal component.Also how do we extract
harmonic power from this.
Thanks in advance
Neha
----- Original Message -----
From: stevepkwong at h...
To: cores at o...
Date: Sat, 27 Sep 2003 06:20:10 +0200
Subject: Re: [oc] SNR Calculation using CADENCE SpectreS tool
>
>
>
>
> ----- Original Message -----
> From: ghittori at e...
> To: cores at o...
> Date: Mon, 30 Jun 2003 11:24:07 -0100
> Subject: Re: [oc] SNR Calculation using CADENCE SpectreS tool
>
>
> > Hi, > > have you got an example of Matlab routine for the SNR > calculation?
> I',
> not able to find a general way to extract the signal component
> from
> my
> frame of data (the signal is always located in more frequency
> bins)
>
> Thank you for yor help,
>
> Nicola
>
>
>
> ----- Original Message -----
> From: gu2 at u...
> To: cores at o...
> Date: Tue, 28 May 2002 00:29:27 +0200
> Subject: Re: [oc] SNR Calculation using CADENCE SpectreS
tool
>
> >
> > > > Hi, > > > > You may first sample you datas from your modulator output
> > using 'sample' function and save them, then you can
> calculate
> SNR
> > with
> > MATLAB.
> >
> > Hope this helps
> > gu
> > ----- Original Message -----
> > From: adesh_b at a...
> > To: cores at o...
> > Date: Wed, 20 Feb 2002 21:27:53 +0100
> > Subject: Re: [oc] SNR Calculation using CADENCE
SpectreS
> tool
> >
> >
> > > > did u find a way to determine the snr of a signal
> using
> matlab
> > tools whether using the commands or in
simulink.
> > If so please provide me with help.
> > send reply to:
> >
> > adesh_b at a...
> >
> > thank u!
> >
> > ----- Original Message -----
> > From: electronicszone at y...
> > To: cores at o...
> > Date: Fri, 3 Aug 2001 16:19:18 +0200
> > Subject: [oc] SNR Calculation using CADENCE
SpectreS
> tool
> >
> > >
> > > > > > Dear Sir, > > > I am working on a > Sigma-delta
> > ADC.
> > > Currently I am working on CADENCE
> spectreS
> > tool
> > to > > > > > simulate the
modulator. > > > > > > > > I > > >
> have a > > > > > second order modulator . The
bandwidth of the > input > > is > > > > 12.5MHz. The > > > > > oversampling ratio is only four (so sampling > freq. > > is > > > 100MHz).
> > I am > > > > > working on a
cascaded (MASH) modulator in which > the > > > second
> > stage is > > > > > a 10-bit
Pipelined ADC. The flash ADC inside > the > > > modulator is > > > > a > > > > > 4-bit one. Currently, I have designed the 2nd > order > > > modulator > > > > using > > > > > Switched capacitor filters. Now, I want to > > calculate the
> > Signal to > > > > > Noise ratio
at the output of the Modulator. > Can you > > > please
> > help me > > > > > how to
calculate SNR using CADENCE? Since, I > have > > just >
> started > > > > > working on CADENCE, i
don't know much the > features > > of > > > this
> > tool. > > > > > While doing
its behavioral > > > simulation in MATLAB, i used >
> > the > > > > > PSD command in the
MATLAB and since I know the > input > > > signal >
> > frequency, I calculated the signal power and
> the > > rest as > > > the > > > > Noise > > > > > power to get the SNR. I thought to use that SNR > > routine > > > only > > >
> (as i > > > > > used in MATLAB) to calculate
the SNR of the > output > > of the > > > > modulator > > > > > generated in CADENCE spectreS tool. But the > problem > > is > > > that >
> > this > > > > > tool, during its
transient analysis, does not > > generate > > > samples > > > > at > > > > > regular interval. So, i cant use the PSD > command > > > available in > > > > > MATLAB to calculate the PSD of the output of > the > > > modulator to > >
> > calculate the SNR. > > > > > Sir,
please give me a suitable solution for > the > > same.
> > > waiting for a positive reply. > >
> > Thanking You > > > > > Yours sincerely > > > > > Lokesh Kumath > > >
> > > > > >
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