[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Discuss-gnuradio] Support wideband(20MHz) OFDM transmitting/receiving u

From: Qing Yang
Subject: [Discuss-gnuradio] Support wideband(20MHz) OFDM transmitting/receiving using RawOFMD and USRP N210
Date: Mon, 6 Aug 2012 23:12:03 +0800

Dear all,

Recently we are building an OFDM communication system based on RawOFDM(http://people.csail.mit.edu/szym/rawofdm/README.html). In the simplest point-to-point case, we use a pair of PC and USRP as the transmitter and use another pair 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 with 20MHz bandwidth?

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
Memory: 15.7GiB
Processor 0~7: Intel(R) Xeon(R) CPU E5620 @ 2.40GHz

UHD version: UHD_003.004.000-c50bb91 image version 8
gnuradio version: 3.4.x

Yang, Qing
Information Engineering, CUHK

reply via email to

[Prev in Thread] Current Thread [Next in Thread]