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From: Musa on 26 Jun 2010 16:19
Hi Everbody,
My problem is cancelling ISI at the Receiver by using Adaptive Equalizer(Decision Feedback Equalizer)
I have a problem with Simulink Communication Toolbox. By using simulink communication toolbox I set up a baseband model Bernoulli Data Source=>QPSK Modulator=>Multipath Rayleigh Fading=>AWG=>LMS(DFE)Equalizer=>QPSK Demodulator.
when I ran model I took the below results,
*When there is no delay(no multipath) and no Equalizer the BER of the simulation is acceptable
*When there is 2e-8 delay(with ISI) and Equalizer I have a 0.5 BER so which is unacceptable.Let's get summurize it my problem is setting correct Equalizer settings and removing the ISI and better BER(acceptable)
I have the simulink model and send it who want to solve my problem and I will support with extra information.
I need urgent help,
Please contact with me.
Best Wishes
From: Realbaltalyus on 27 Jun 2010 05:02
"Musa " <baltalyus2004(a)yahoo.com> wrote in message <i05nbp$4q$1(a)fred.mathworks.com>...
> Hi Everbody,
> My problem is cancelling ISI at the Receiver by using Adaptive Equalizer(Decision Feedback Equalizer)
> I have a problem with Simulink Communication Toolbox. By using simulink communication toolbox I set up a baseband model Bernoulli Data Source=>QPSK Modulator=>Multipath Rayleigh Fading=>AWG=>LMS(DFE)Equalizer=>QPSK Demodulator.
> when I ran model I took the below results,
> *When there is no delay(no multipath) and no Equalizer the BER of the simulation is acceptable
> *When there is 2e-8 delay(with ISI) and Equalizer I have a 0.5 BER so which is unacceptable.Let's get summurize it my problem is setting correct Equalizer settings and removing the ISI and better BER(acceptable)
> I have the simulink model and send it who want to solve my problem and I will support with extra information.
> I need urgent help,
> Please contact with me.
> Best Wishes


Is there nobody to help me about this problem? :(
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