Re: Debugging OFDM | Error in Image reception

[Mulamoottil Abraham]

Hey 

But thats the thing as I am directly connecting the transmitter and reciever as in grc... will there be any error(i dont think so) also can you tell me whether the packet length used is correct or not and is there a need for fec when the blocks are directly connected and no awhn or external is introduced. Can you look at my grc so that you will get an idea what i did.

Thanks

On Thu, 13 Apr 2023, 01:52 Mulamoottil Abraham, <maabrahamofficial@gmail.com> wrote:

Hello,

Using the examples I have created an OFDM transmitter and receiver loopback. As given in grc file below I have changed packet length to 48 instead of 96 even though only 48 subcarriers are used as in that case I am getting correct output for bmp_24.png which is attached below. But for all other cases it fails. I have been behind this and I do not know where it actually fails as no noise is not added anywhere. Can anyone Help me in solving the issue and help me in debugging the same. Attaching grc files for the same along with sample images.

Thanks and Regards,

Abraham Abraham Mulamoottil

Graduate Student (MS in Telecommunication Program)

maa97@umd.edu.in

+12408543275