Re: [Discuss-gnuradio] anyone implement the Raleigh fading model/multi-path?

[George Nychis]

Hi Richard,

This would be great!  I have great use for this, and I'm sure many 
others would too.  Did he generate any documentation showing his 
evaluation of his implementation, and any details of it?  (like a final 
research paper).

Could you make this code publicly available to the list so that we can 
review its implementation and discuss integrating it in to the code 
base?  We could work on integrating the multiple paths in to the C++ 
block and making it flexible.

If you host it for us, it won't undergo just one set of eyes, but many 
sets of eyes on the list :)  But make sure to link to it, rather than 
send an attachment because of list restrictions.  Then we can put it in 
a features branch within the SVN repository to work on it if needed.

Thank you!
George


Richard Clarke wrote:
> Hi George,
>
> I have had a Summer student doing some work on this (a year ago now). He 
> implemented a GNU Radio module that can do Rayleigh channel simulation. 
> He based it on a particular paper (I'd have to look it up) for the 
> implementation. He verified the statistical performance of his 
> implementation against the Matlab Rayleigh channel model and against 
> theory and found it to be a close match. I'm not entirely convinced of 
> the delayed multiple path aspects of the design/implementation but 
> haven't had time to look into it further. In fact as it stands I believe 
> the GNU Radio module (at C++ level) only handles a single flat fading 
> path and doing multiple delayed paths is done at the python module level 
> and which invokes multiple instances of the Flat fading Rayleigh C++ GNU 
> Radio module.
>
> I'd welcome another set of eyes and someone more experienced than I am 
> with GNU Radio to help finish off this potentially very useful addition 
> to the GNU Radio code base.
>
> Cheers
> Richard
>
>
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