08-07-2017 09:50 AM
Hi.
We have made a BPSK transmitter that is transmitting bits. It is working OK and the constellation diagram is correct.
For receiving and extraction of these bits at the receiving USRP we used an OFDM receiver. The problem is that the receiver is not giving the exact bits that were transmitted. How can we get the exact bits at the receiver that were transmitted from the transmitter?
We are using 2 USRP 2920 with 2 host PC's.
Attached are the OFDM receiver and BPSK Transmitter.
08-08-2017 05:26 PM - edited 08-08-2017 05:30 PM
Hi nauman
Is there any particular reason why you are trying to transmit with BPSK and receive with OFDM? The Modulation Toolkit includes a BPSK receiver example in C:\Program Files (x86)\National Instruments\LabVIEW 20XX\examples\instr\niUSRP\ModulationToolkitExamples, the "niUSRP EX PSK Rx" allows you to pick the PSK format including BPSK.
Also, if you want your question to have more visibility from USRP users, I would definitely recommend you to post it the USRP forum instead in http://forums.ni.com/t5/USRP-Software-Radio/bd-p/500
WenR
08-10-2017 02:16 AM
Hi.
Thank you for your reply.
Yes there is an example of bpsk receiver available and I tried that, but the problem is that i need to regenerate the bits that were transmitted at the receiver.
The receiver in the example does not regenerate bits. Is there a way I can use this receiver to extract/regenerate the transmitted bits?
This OFDM receiver regenerates the transmitted bits but the bits are in error that is why I thought if it is possible to somehow correctly regenerate bits using the OFDM receiver.
I have posted my question on the USRP forum. Hope to get a reply soon.