| Author |
Message |
kiki
Guest
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 Posted:
Sun Dec 26, 2004 7:57 am Post subject:
how to find the level crossing rate? |
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Hi all,
I have a stationary random process with zero mean x(t), let's define the
level crossing rate to be
LCR=lim E{Na(T)}/T as T -> 0...
where Na(T) is the number of the level crossings in the time interval T...
i.e. the times that the random process x(t) passing through the level
x(t)=a...
How should I find LCR analytically? It may be difficult... are there any
well-known results for simple random processes, such as ON-OFF process, or
Gaussian, etc?
Any ideas?
Thanks a lot! |
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ted
Guest
|
| Posted:
Sun Dec 26, 2004 7:57 am Post subject:
Re: how to find the level crossing rate? |
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"kiki" <lunaliu3@yahoo.com> wrote in message
news:cqlmuo$ett$1@news.Stanford.EDU...
| Quote: | Hi all,
I have a stationary random process with zero mean x(t), let's define the
level crossing rate to be
LCR=lim E{Na(T)}/T as T -> 0...
where Na(T) is the number of the level crossings in the time interval T...
i.e. the times that the random process x(t) passing through the level
x(t)=a...
How should I find LCR analytically? It may be difficult... are there any
well-known results for simple random processes, such as ON-OFF process, or
Gaussian, etc?
Any ideas?
Thanks a lot!
|
It is out there, usually related to a bandwidth. gaussian. I have a book
that has it and derived, somewhere, think Microwave is in the title. |
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Tim Wescott
Guest
|
| Posted:
Sun Dec 26, 2004 9:34 pm Post subject:
Re: how to find the level crossing rate? |
|
|
kiki wrote:
| Quote: | Hi all,
I have a stationary random process with zero mean x(t), let's define the
level crossing rate to be
LCR=lim E{Na(T)}/T as T -> 0...
where Na(T) is the number of the level crossings in the time interval T...
i.e. the times that the random process x(t) passing through the level
x(t)=a...
How should I find LCR analytically? It may be difficult... are there any
well-known results for simple random processes, such as ON-OFF process, or
Gaussian, etc?
Any ideas?
Thanks a lot!
Kiki: |
Ask yourself what the level crossing rate for Gaussian white noise would
be. Now try uniformly distributed white noise. Now binary white noise
that only occurs at -1 and 1. Now ask yourself if the distribution of
the noise is the important characteristic here.
--
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com |
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