Re: [Discuss-gnuradio] Packetloss and Ber simulation using OFDM

[Sai Parepalli Laxman]

Hello,

This is Nishant. 

I have a pair of N210 USRP modules and two pairs of LFTX/LFRX daughter boards. I have an unexplained 55db  drop in the signal where a signal with amplitude bounded between -1 to 1, shows a -30db peak rather than a 0 dB peak on Qt GUI Frequency Sink and I am wondering if the amplifier is wrong or something that I am not doing right.  

I am using Ubuntu 18.04.1 gnuradio version 3.7.11 and UHD_003.010.003.000

I have attached the flowgraph and the transmitter output below.