I have just started learning about USRP and Gnuradio by doing some projects like FM receiver, or to send and receive files so that i could be familiar with GNUradio and USRP working. and has been working almost fine.
I would like to work with GnuRadio using USRPs, probably with OFDM transmission. Where I can use multiple Sub-carriers in one OFDM Symbol. Each subscribers in this Symbol can carry Pilots data probably (binary Data) which go through the Channel. on the other side at RX USRP will have to receive these Pilots Symbols. In the end I will have to find out the value for this Channel which will compensate any kind of data in the future.
1: How I can modify this model in order to just send and compare the Pilots Symbols(Data)? I have set the value 0 in my input source vector so that USRP sends only Pilots carriers ((-6,-5,5,6),) and symbols ((-1,1,-1,1),). But just doing this, My TX does transmitting but at RX, my USRP GREEN light is turning ON for some seconds and after that its getting off? Or may be I'm doing something wrong..
2: Is there a scope in Gnuradio which gives info about carriers and their Symbols?
3: How I can convert the whole model into Binary representation, so that I can better analyze which bits are flipping. Actually the Data on Pilot Carriers should be binary; for example, theoretically, If I have a+jb, a complex representation of binary data after mapping using Modulation (PSK/QAM). and a=1011, b=1111. and at RX if I get b=1110, then how can i compare them both in GNUradio? in order to find a compensation factor for the Channel model? Please help in this ..
