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Re: [Discuss-gnuradio] Channel Model Block in GNU radio

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Channel Model Block in GNU radio
Date: Thu, 19 Mar 2015 13:55:37 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

Hi Merry,

the taps characterize the channel you want to simulate, so you will need to calculate these based on your mathematical channel model. The classical multipath channel model is a tapped-delay line-model, and that kind of directly maps to the concept of filter taps.

Are you sure you do 4 samples per second? That seems to be incredible little, especially when working with channel impulse responses.


On 03/19/2015 06:55 AM, Merry Dominic wrote:

I am working on the channel model block in GNU radio. I am confused in setting up the taps.I have a random source that undergoes a QPSK modulation at 4 samples per second.Could you please explain me the concept under setting the tap values.

I am supposed to use a polyphase clock synchronizer followed by a CMA equalizer for analyzing the channel response.

Looking forward for your reply.


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