Hi, I’m working on something similar. I’m also trying to map channel parameters to input parameters for the gr-channel blocks and validate the results.
I wondered whether there were any news on that and whether the python code is available somewhere. Best, Bastian > On 30 Dec 2015, at 02:33, Marcus Müller <marcus.muel...@ettus.com> wrote: > > I must admit I did that, but feel unsure about how many sines I'd need to use > to simulate spread. > The result I got with 8 and standard doppler spread don't look overly > healthy, and osmocore/gr-gsm has a hard time understanding noise-free > synthetic bcch bursts after going through the fading model. > Any advice on that? > > Best regards, > Marcus > > Am 29. Dezember 2015 22:16:53 MEZ, schrieb Johnathan Corgan > <johnat...@corganlabs.com>: > On Tue, Dec 29, 2015 at 11:50 AM, Marcus Müller <marcus.muel...@ettus.com > <mailto:marcus.muel...@ettus.com>> wrote: > > ETSI TS 145 005 V[1] specifies the relevant GSM channel models. > > I do have a bit of python code that converts those to 10MS/s sampled > FIRs. Should I just add something to gr-channels python code that gives > you FIR taps for different of these models? > > It would be useful to see how well the Annex C tables can be mapped to the > Frequency Selective Fading Model block parameters and do some resulting > simulations with these. The block simulates the time-varying effects of > doppler and Rician/Rayleigh fading given a power delay profile and other > relevant parameters. >
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