Bit stream using myDAQ

[bns2804]

Hello.

I am new to Labview. I want to have stream of bits to be line coded using some technique such as Manchester coding, RZ etc and the modulate the signal and transmit over a channel using myDAQ.. I want at the other end of the channel to retrieve the signal, demodulate and decode. Finally I want to compare the sent bit stream and the received bit stream hence calculating the BER. My channel is a power line communication channel and I already have my coupling circuits.

Thank you.

[nyc_(is_out_of_here)]

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@bns2804 wrote:

Hello.

I am new to Labview. I want to have stream of bits to be line coded using some technique such as Manchester coding, RZ etc and the modulate the signal and transmit over a channel using myDAQ.. I want at the other end of the channel to retrieve the signal, demodulate and decode. Finally I want to compare the sent bit stream and the received bit stream hence calculating the BER. My channel is a power line communication channel and I already have my coupling circuits.

Thank you.

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So now that we know what you want.

What have you attempted?

Sounds like yet another project where someone is expected to provide you with a solution ready-made. This isn't the forum for that.

 EDIT: This is a post is a duplicate. THe original can be found at http://forums.ni.com/t5/LabVIEW/Bit-error-rate-of-a-channel/m-p/3076076

[bns2804]

Sorry about that.

Well I have been able to encode a digital waveform using Manchester coding. I now need to modulate it using FSK,QAM or OFDM and then transmit the signal. I then want to perform the demodulation. I am stuck with the modulation and the demodulation.

Thank you

[Dennis_Knutson]

Are you using the modulation toolkit - http://sine.ni.com/nips/cds/view/p/lang/en/nid/210568?

[bns2804]

Hello.

Yes i have tried to understand some examples given in NI but I can't relate them sufficiently enough to what I want to do especially interfacing with the myDAQ for transmission.

Thank you

[smoores]

bns2804,

Reading from and writing to the myDAQ is performed using the NI DAQmx drivers.  You will not be able to do hardware timed AI/AO, so the myDAQ may not be appropriate for your application.  You will likely see a good bit of jitter if you attempt to create a sinusoidal wave via your analog output.

http://www.ni.com/product-documentation/5434/en/