Re: [Discuss-gnuradio] using custom signal processing module

2011-06-06 Thread Thomas H Kim
Yes, I did... My custom module showed up in gnuradio-companion after I ran make install... But, I couldn't load it in python script. Thomas From: Nick Foster To: Thomas H Kim Cc: Discuss-gnuradio@gnu.org Date: 06/06/2011 01:08 PM Subject:Re: [Discuss-gnuradio]

[Discuss-gnuradio] using custom signal processing module

2011-06-06 Thread Thomas H Kim
Hello, I followed "writing a signal processing block for GNU radio" with little bit of modification and I was able to compile and ran make check without any problem. When I launch gnuradio-companion, the module I made showed up. However, when I try to import the module from python script, I ge

[Discuss-gnuradio] problem on transmitting signal

2011-04-08 Thread Thomas H Kim
Hi all, I'm transmitting a packet to 2.4G band using RFX2400 on USRP1 and observed this problem: Once in a while, the transmission stops in the middle of the packet being transmitted. Does anyone know if 1) there is any TX amp control line which is controlled by the FPGA and in what condition

[Discuss-gnuradio] Benchmark scripts

2011-01-10 Thread Thomas H Kim
All, I am testing 2x USRP1 with RFX2400 daughter cards with benchmark_rx and benchmark_tx scripts and have questions. When I set the MCS to dbpsk, error rate I got was close to zero. When I set it to dqpsk, d8psk, error rate is 100%. When I set it to gmsk, certain daughter cards had close to 0

[Discuss-gnuradio] USRP failed to tune?

2010-12-21 Thread Thomas H Kim
I have two USRP1 boxes and four RFX2400 daughter cards. It looks that one of the two USRP1 box does not recognize three of four daughter cards. I pluged in the daughter card to a USRP1 one by one and ran benchmarck_tx.py script with the center frequency set to 2.4G. All four daughter cards ran

[Discuss-gnuradio] benchmark_rx result is odd!

2010-12-21 Thread Thomas H Kim
Hi all, I am checking my usrp setup with benchmark_tx and benchmark_rx scripts. The results I got were very odd, I want to ask your opinion about it. HW setup: I have two "nodes" and each node has 1x laptop, 1x USRP1 with 2x RFX2400 daughter cards. The two RX/TX ports from a node are connected

[Discuss-gnuradio] question on gr_message_sptr class

2010-12-16 Thread Thomas H Kim
Hi all, I wonder if I can access message data of this class? It has to_string() function, but I want to carry some binary data via message. I looked at the documentation, but it did not look like it had any way to pass the data. Thanks, Thomas ___ D

[Discuss-gnuradio] usrp_source: overrun

2010-12-16 Thread Thomas H Kim
Hello, I was running Hydra MIMO testbench on USRP and got stream of this message: usrp_source: overrun drop 16384 bytes Does anyone know what it means by overrun? Thanks, Thomas From: Josh Blum To: Patrik Eliardsson Cc: "discuss-gnuradio@gnu.org" Date: 12/16/2010 12:29 PM Su

Re: [Discuss-gnuradio] segmentation fault (core dump) -- help needed

2010-11-08 Thread Thomas H Kim
ject:Re: [Discuss-gnuradio] segmentation fault (core dump) -- help needed Sent by:discuss-gnuradio-bounces+thomas.h.kim=aero@gnu.org On Mon, Nov 8, 2010 at 12:13 PM, Steven Clark wrote: > On Mon, Nov 8, 2010 at 11:52 AM, Thomas H Kim wrote: >> >> Steven, >

[Discuss-gnuradio] segmentation fault (core dump) -- help needed

2010-11-08 Thread Thomas H Kim
Hi all, I'm a newbie in gnu software radio (and in python, and in linux) and got stuck on this segmentation fault issue. I am trying to setup GNU software radio on a machine (HP workstation xw8600 with dual intel Xeon processor). I installed Fedora Core 14 and installed all needed dependencies