Recently we are building an OFDM communication system based on RawOFDM(
http://people.csail.mit.edu/szym/rawofdm/README.html). In the simplest
case, we use a pair of PC and USRP as the transmitter and use another
as the receiver.
To reduce the influence of CFO, we need to run our system with large
bandwidth (like 802.11 at 20MHz). However, once we set the transmitting
bandwidth larger than 2MHz, the receiver’s program will block there and
show “over-run” message later on (a screen of "O"s). For small bandwidth
(<2MHz), the receiver runs pretty well.
Do you have similar experience? How can I make the OFDM receiver work
We use USRP N210. And the configuration of our PC is
Ubuntu release 10.10(maverick) kernel 2.6.35-22-generic GNOME 2.32.0
Processor 0~7: Intel® Xeon® CPU E5620 @ 2.40GHz
UHD version: UHD_003.004.000-c50bb91 image version 8
gnuradio version: 3.4.x