Re: [Discuss-gnuradio] Adding UCLA_Zigbee_PHY

stian Bloessl > On 03/16/2013 12:13 PM, Songsong Gee wrote: > >> forget about my last post. I've solved that thing by copying >> ieee802_15_4.so from somewhere in git directory. >> But, now I got a real problem. The following is messages from running >> examples/rx

[Discuss-gnuradio] Replacing USRP package with UHD package

I have a python code that uses usrp package from gnuradio However, as GNUradio gets updated, usrp package is deprecated and uhd package is recommended. Thus, is there any way to modifying the code to use uhd package instead of usrp package? Is it okay to just replace* *'from gnuradio import usrp'

[Discuss-gnuradio] Adding UCLA_Zigbee_PHY

Hi, I'm now trying to use UCLA_Zigbee_PHY by UCLA I have been following this instruction: https://www.cgran.org/wiki/UCLAZigBee#HowToInstall FYI, I've installed GNUradio with *build-gnuradio *script. Thus, i think I don't have any directories and files for installation because the script removes

[Discuss-gnuradio] Is git repository down today?

I've tried to install GNU Radio with build-gnuradio script. But every time it fails and says 'could not find gnuradio-core after checkout git checkout' something ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/lis

[Discuss-gnuradio] Too weak Tx power daughterboard problem

I have more than eight RFX 2400 daughterboards and for a long time, I have left them unused. Recently, I have tested TxRx test with those DBs and only one transmits signal with a proper power level but others cannot generate a such power level In addition, some of them even cannot sense or receive

Re: [Discuss-gnuradio] Trouble in running usrp_siggen.py (or usrp_siggen_gui.py)

I solved problem It's not because eth, USB, nor permission problem but because broken daughterboard 2012/5/15 Songsong Gee > Good evening, > > Currently, I am testing usrp_siggen.py (or gui version) with usrp_fft.py > and usrp_oscope.py > But I have a unfamiliar error

[Discuss-gnuradio] Trouble in running usrp_siggen.py (or usrp_siggen_gui.py)

Good evening, Currently, I am testing usrp_siggen.py (or gui version) with usrp_fft.py and usrp_oscope.py But I have a unfamiliar error message which I have never faced. When running siggen without SU permission: socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Op eth0: socket: No such file or directo

[Discuss-gnuradio] Difference between usrp in gnuradio and usrp in grc_gnuradio

I'm examining a GNU Radio Lab material: Blad, Olofsson - 2011 - Software-Defined Radio Lab 1 Getting in Touch with GNU Radio and the USRP

[Discuss-gnuradio] Failed to find libraries with prefix 'libboost_' after pre-requisite installation.

I am trying to install GNU Radio and UHD on a new PC with the latest build-gnuradio script. (which includes gtk2-engines-pixbuf) When the script checks the library after pre-requisite installation, an error occurs and the script stops. Here is the message when it occurs: Checking for library libu

[Discuss-gnuradio] gr_firdes cutoff frequency

I'm looking benchmark program and now found use of gr.firdes.low_pass: chan_coeffs = gr.firdes.low_pass (1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate 1.0,

[Discuss-gnuradio] Gtk-WARNING when calling GUI

Hello, Is there anyone seeing message like Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", when calling any GUI window? I'm wondering that this message is caused by Ubuntu 11, or by GR 3.5.x before I got this message, I've used Ubuntu 10 and GR 3.4.x and I upgraded both OS

[Discuss-gnuradio] Differences between USRP series

There are various kind of USRP series, USRP1, USRP2, E100, B100, and N200. At a glance I could find some differences between them. 1. USB connection and Ethernet connection which determines the data rate between the USRP and a PC. (and it also makes difference when addressing USRP in GNU Radio.)

[Discuss-gnuradio] How does benchmark_rx.py know the packet size?

When I run benchmark_tx.py, the packet size has to be specified (default is 1500) However, I could see nothing defining the packet size on benchmark_rx.py In benchmark_rx.py, messages from benchmark_tx.py are queued after passing demodulator, correlator, and framer sink. But, I'm wondering that ho

[Discuss-gnuradio] About threshold value in digital_correlate_access_code_bb in gr-digital

I got a question about threshold value in digital_correlate_access_code_bb in gr-digital while testing benchmark_xx.py threshold is set to 12 by default, However, if I use threshold=12, it never calls callback function Thus, I changed this value with larger value, like 24, 36, 64... And then callb

Re: [Discuss-gnuradio] Problems in benchmark_xx.py (free(), Segmentation fault, overrun, CRC check, FLL)

Thank you to all of you who answered to this silly questions. It's confusing because I did fresh install several times Anyway, I'll try with those advices Thank you very much 2011/11/27 Marcus D. Leech > ** > > I have a number of problems in testing benchmark program under a > gr-digital dire

[Discuss-gnuradio] Problems in benchmark_xx.py (free(), Segmentation fault, overrun, CRC check, FLL)

I have a number of problems in testing benchmark program under a gr-digital directory from GR 3.5.0rc0 1. Problem about free() side or segmentation fault on tx Whatever I select modulation schemes(-m) or bit rate(-r), carrier frequency(-f) and other options either a free()-related problem or a seg

[Discuss-gnuradio] Very confused on benchmark_rx.py

I have difficulties benchmark_xx.py I use USRP1 with SBX and GNU Radio 3.5.0rc0 on Ubuntu 10.10 on VMWare. Usually I do test with following commands. $ ./benchmakr_tx.py -f 450e6 --tx-gain=30 -r 100e3 -S 10 -m psk (or gmsk) --tx-amplitude=0.02 (for a signal not being clipped) $ ./benchmakr_rx.py

[Discuss-gnuradio] Error in testing benchmark_tx/rx.py

I'm currently testing UHD. I use two USRPs with one SBX on each. and I got GNU Radio 3.5.0rc0 on Ubuntu 10.10 and benchmark programs supporting UHD. When I run benchmark_tx/rx.py, however, tx@ubuntu $ ./benchmark_tx.py -f 410M rx@ubuntu $ ./benchmark_rx.py -f 410M I can see 'dots' representing a

Re: [Discuss-gnuradio] Keeping GNU Radio up-to-date

ke > make check > sudo make install > -- > (I think the path is "~/username/gnuradio/" if you used the script) > > Regards > Sebastian > > On Wed, 16 Nov 2011 20:53:19 +0900 >  Songsong Gee wrote: >> >> I've installed G

[Discuss-gnuradio] Keeping GNU Radio up-to-date

I've installed GNU Radio with *build-gnuradio* script by Marcus Leech, Now, I have a question If I wanted to update GNU Radio, how should I do it? 1. re-download the script and run again. or 2. remove installed GNU Radio and UHD in *SOMEHOW* and do procedure (1.) For a Linux newbie, it is very

Re: [Discuss-gnuradio] rx_callback with UHD

Oh, thank you very much It seems its directory hierarchy is different from that of mine. I'm currently using 3.4.0 Is it new one for 3.5.0 ? 2011/11/16 Josh Blum : > > >> I want to modify benchmark_tx/rx.py for UHD >> > > http://gnuradio.org/cgit/gnuradio.git/tree/gr-digital/examples/narrowband

[Discuss-gnuradio] rx_callback with UHD

Hi, I want to modify benchmark_tx/rx.py for UHD In benchmark_tx.py, usrp_receive_path invokes rx_callback when receiving a signal I'm curious that it is also possible with uhd.usrp_source or not -- Seokseong Jeon, PhD Candidate Communication & Networks Lab IT Convergence Engineering (ITCE), PO

[Discuss-gnuradio] Cognitive Radio Implementation with XML

;t show the part that implementing XML parser. Is it impossible to use the parser in GRC? Only for a .py file typed manually? -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/

[Discuss-gnuradio] simple_correlator with no outputs

, but gr_simple_correlator gives nothing. It does not output neither a recovered signal or junk. Literally, it gives nothing. Currently I use GNU Radio 3.4.0 built by build-gnuradio script on Ubuntu 10.10 -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnu

[Discuss-gnuradio] preamble and simple framer and correlator

use these blocks from doxygen ( http://gnuradio.org/doc/doxygen/) But I cannot figure out it easily. Does anyone know what value should be in Payload Byte Size for framer and correlator and where I can find some examples of these two blocks? -- Seokseong Jeon (aka Songsong Gee

[Discuss-gnuradio] appending preamble with different power

anion flow graph to make? And is python hard coding possible? -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] appending preamble with different power

"Nick Foster" 님이 작성: > On Fri, 2011-06-24 at 01:17 +0900, Songsong Gee wrote: >> Continueing with http://www.ruby-forum.com/topic/1983866, >> >> >> I have planned to append a preamble before an actual signal and turn >> RX on earlier than TX. >> >

[Discuss-gnuradio] How to synchronize RX with TX?

eives undesired signal if RX turns on earlier, and RX USRP cannot receive what TX sent if RX turns on later. Thus, I have a difficulty on making synchronization. I'm looking forward to your helpful advices. -- Seokseong Jeon (aka Songsong Gee) _

[Discuss-gnuradio] Freezing when running build-gnuradio

omebody help me :) -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Installing UHD with [BOOST not found]

wrong. -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Question about SMA-SMA coaxial cable

rtain cable which does not have such effect for very wide frequency range including very low frequency range i.e. DC to 400-500 MHz -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/ma

[Discuss-gnuradio] USRP1 and RFX2200 problem

Currently I am trying to use RFX2200 on USRP1 However, when I run a flow graph of GRC it doesn't recognize RFX2200, other boards, RFX400, RFX2400 is okay. I run a usrp_probe for RFX2200 and the result is like below: >>> USRP Probe Name: Unknown (0x002c) Converter Rate: 6400 Uses Quadrature: F

[Discuss-gnuradio] USRP SBX board and RFX2200

I wonder if SBX board can replace all RFX series including 2.4G ISM band and so on. And currently I tried to use RFX2200 with GRC but it says RFX2200 is unknown (0x002d) How can I solve this problem? -- Seokseong Jeon (aka Songsong Gee) ___ Discuss

[Discuss-gnuradio] 802.11 Interference

I'm trying to do some experiment on freq. band 2.4-2.483 GHz with RFX2400 But I could not get what I expected. My guess is that 802.11 AP and USRP interfere each other, thus it cannot work well. Am I right? -- Seokseong Jeon (aka Songson

[Discuss-gnuradio] about RFX2200 duaghter board

use? -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Fwd: Do RX and TX of USRP2 work independently ?

> > > > > > > > > > > > > Could you tell me how to understand this situation? > > > > > > Regards, Bomi. > > > > > > > > > > > > > > > > > > > > > > > > > > > >

Re: [Discuss-gnuradio] GNU Radio conditional operation

at 08:54:15PM +0900, Songsong Gee wrote: > > Hi, > > > > > > I'm wondering whether I can use GNU Radio with conditional operation > > > > > > For example, > > > > > > Listens signal, and if preamble received, skip preamble and

[Discuss-gnuradio] GNU Radio conditional operation

Hi, I'm wondering whether I can use GNU Radio with conditional operation For example, Listens signal, and if preamble received, skip preamble and continue listening if payload received, store it into file sink Like that. Currently, I use GNU Radio with USRPs just sending and receiving a sequen

[Discuss-gnuradio] USRP output power

I want to figure out bit error rate for certain signal to noise ratio Thus I have to know SNR value which is a function of energy per one bit (Eb) and noise characteristic (N0) Let's assume I know noise characteristic, N0 (in fact I gathered noise data and figured out N0) For now, I have to figure

[Discuss-gnuradio] LNA chip and Gain calculation

I heard that RFX series have LNA chips on it. It means RX is amplified after LNA chip. Then, do I have to consider it in order to calculate gain? Which I mean, do I have to divide RX with some values (as same as LNA chip gain) ? And after that, can I get a TRUE gain value? Or can I just calculat

Re: [Discuss-gnuradio] DPSK mod/demod block work well?

-- Forwarded message -- From: Songsong Gee Date: 2011/4/1 Subject: Re: [Discuss-gnuradio] DPSK mod/demod block work well? To: Tom Rondeau I have an additional problem Here is a flow graph: https://picasaweb.google.com/lh/photo/vwkkNZP_WFKGJQSP48MoOQ?feat=directlink It did not

[Discuss-gnuradio] DPSK mod/demod block work well?

I just made very simple dpsk mod/demod testing flow graph you can see flow graph in following link: https://picasaweb.google.com/lh/photo/76z3sTbLs9Srz1N-wJhNzw?feat=directlink When I run it, I found strange outcome from it: https://picasaweb.google.com/lh/photo/U0_S_71HzkL9t9RbeEBP2Q?feat=direct

[Discuss-gnuradio] About Baisc TX/RX power

I used to work with RFX 400 for wireless communication Now, I have to change daughterboard to BasicTX/RX And then, received signal is not much strong as RFX 400 It's to weak Other conditions are all same, except boards. Are Basic TX/RX not appropriate testing wireless communication? And if I MUS

[Discuss-gnuradio] Re: Cannot choose TXA/TXB on BasicTX board

And one thing Can I connect TX and RX directly with SMA-SMA cable? When I use RFX400, someone advised me not to connect TX and RX directly and to connect with some attenuator But, some search after, I found that people who connected Basic TX and RX directly with cable 2011/3/25 Songsong Gee

[Discuss-gnuradio] Cannot choose TXA/TXB on BasicTX board

I can find RXA/RXB on BasicRX board in USRP source However, where is TXA/TXB in USRP sink? That doesn't matter to transmit signal? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] DPSK block problem

I want to send an receive data with DPSK modulation So I made a simple testing GRC graph https://picasaweb.google.com/lh/photo/wYSKGiQz-0xB5EXtfEe_HQ?feat=directlink Originally, I separated TX part and RX part, TX part performs DBPSK mod and passes to USRP sink and RX part USRP source gives a sign

[Discuss-gnuradio] Is there a discriminator for FSK demod?

I'm looking for some discriminator for FSK demod But I cannot find pre-made block in GRC Does anyone have an idea to make a discriminator with existing blocks? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listin

[Discuss-gnuradio] Can it be an example of FSK?

Now I'm trying to build a FSK transmitter I made it, but I'm not sure this is what I expected, https://picasaweb.google.com/lh/photo/BM8DUECtwkkRhG3OlFzkLg?feat=directlink When I see the scope plot It seems that PC performance is not enough to refresh the screen __

[Discuss-gnuradio] Question about CPFSK block

I heard that there is a CPFSK block in GRC The question is, when decode a signal How can I decode a signal modulated with CPFSK ? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] question about USRP up/downconversion

I have some curiosity about USRP up/downconversion If I have a rectangular pulse train and I want to send it with carrier freq. 2.4G So I set frequency in USRP block with freq. 2.4G Then, my rectangular pulse train is moved to 2.4G band in frequency domain? In other words, USRP block automaticall

[Discuss-gnuradio] Can static cause USRP work inproperly?

At least, until the day before yesterday, my flow graph works fine with USRP TX: https://picasaweb.google.com/lh/photo/FVqGp6Qt39P3nP-DLzm2pg?feat=directlink RX: https://picasaweb.google.com/lh/photo/rKCvVTq9Ptst_u2Z0TvCDw?feat=directlink Suddenly, however, yesterday received signal strength is m

[Discuss-gnuradio] Sometimes USRP sensitiviy goes down

Now I've tried communication test a lot of times. I send a signal like below: https://picasaweb.google.com/lh/photo/Ntw86qudmxB4Qu07Z1TNvQ?feat=directlink Then RX shows plot like below: https://picasaweb.google.com/lh/photo/H9RItzjpfemHy-OR2eQhQg?feat=directlink Most of time it's fine. However,

Re: [Discuss-gnuradio] My SHIELDING is wrong?

Thank you for your answer So, does you mean that I have to connect foil with ground pin of the connector? It seems to make sense... I'll try it Thank you so much 2011/3/14 Sim IJskes > On 14-03-11 12:31, Songsong Gee wrote: > >> So, I make a shield around the rod part. Th

[Discuss-gnuradio] My SHIELDING is wrong?

I have electrodes to be tested their characteristics Here is a picture of them, https://picasaweb.google.com/lh/photo/UY9fJGfk2iayEBafvniVbg?feat=directlink And I connected them to USRPs via SMA-SMA cable https://picasaweb.google.com/lh/photo/0wJ84tU_Y0veX6svcWBeMw?feat=directlink However, there

[Discuss-gnuradio] USRP output power

Hello, I want to know USRP output power If I set an amplitude of a sinusoidal signal to 32767, which is the maximum value that USRP can transmit. Then, at the antenna, what voltage value the sinusoidal signal swing? 5V to -5V? ___ Discuss-gnuradio mailing

[Discuss-gnuradio] USRP output power

Does anybody know about output power of a USRP antenna, in voltage and ampere ? I'm trying to make a circuit connected with a USRP antenna port. And, in the future, the human body will replace the circuit Of course, it's a kind of experimental. So, If I send a sinusoidal signal with magnitude 35

[Discuss-gnuradio] IS USRP safe for the human body?

I'm trying to make an intra-body communication system with the USRP Thus, I want to attach TX cable onto the human body skin and transmit signals through the body In this point, is there any electrical, or biological risk like, electric shock.? ___ Discu

[Discuss-gnuradio] Intra-body communication with USRPs

Now I'm trying to make an intra-body communication system Thus I'm looking for freq. characteristics of the human body I found something like below: [image: methods.png] http://dl.dropbox.com/u/11382666/methods.png Here are 3 methods. The question is that if I tried to make the intra-body communi

[Discuss-gnuradio] about RF SMA-M to SMA-M cable

Sorry I didn't say in detail. I mean SMA-M to SMA-M cable in ettus website. If it cannot shield external signal of 400-500MHz band, Could you give me a suggestion? -- Forwarded message -- From: Songsong Gee Date: 2011/1/18 Subject: about RF SMA-M to SMA-M cable To: gnu

[Discuss-gnuradio] about RF SMA-M to SMA-M cable

Does this cable have shielding capability? I need a cable that shields external signal in 400-500MHz -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Baseband vs. Carrier freq.

ncy you specify for the receiver will convert that > frequency to baseband for the rest of your receive flowgraph. > > --n > > On Wed, 2011-01-12 at 15:38 +0900, Songsong Gee wrote: > > I'm wondering whether my flow graph is working correctly. > > > > > > I thin

[Discuss-gnuradio] Baseband vs. Carrier freq.

my question is The sender seems to send just a baseband signal, not a signal whose center freq. is not 450 MHz I think that it need to be multiplied by sinusoidal signal... -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Disc

Re: [Discuss-gnuradio] What Modulation Scheme does RFX400 can perform?

Thank you for your anwer :) Then, in short, Does the flow graph I mentioned use carrier freq. 450 MHz or not? >From the file source, it is just a baseband signal 2011/1/12 Marcus D. Leech > On 01/11/2011 11:57 AM, Songsong Gee wrote: > > Same as Title, What Modulation Scheme doe

[Discuss-gnuradio] What Modulation Scheme does RFX400 can perform?

Same as Title, What Modulation Scheme does RFX400 can perfom? If I draw a flow graph like below: http://dl.dropbox.com/u/11382666/02_RXTX/TX.grc.png What Modulation Scheme is used by default? Can I change it? -- Seokseong Jeon (aka Songsong Gee

[Discuss-gnuradio] RX waveform is not what I expected...

hat I expected, I wanted rectangular waveform like TX side and this weird waveform is a part of LONG sinusoidal wave how can I fix it to get a fine waveform? -- Seokseong Jeon (aka Songsong Gee) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org h

[Discuss-gnuradio] RFX 2400 collides with 802.11 AP?

I saw that RFX 2400 uses 2.3-2.9 GHz band In this document, however, http://www.ettus.com/downloads/ettus_ds_transceiver_dbrds_v6c.pdf an internal BPF filter out the non-ISM band frequency. Does that mean I cannot use 2.3G, 2.5G-2.9GHz? If so, I have an 802.11 AP, and these two can collide? ___

Re: [Discuss-gnuradio] How can I skip N ites for each input?

Thank you very much You are must be a genius 2010/11/25 Josh Blum > There is a block called keep one in n. Is that what you are looking for? > > http://gnuradio.org/doc/doxygen/classgr__keep__one__in__n.html > > -Josh > > > On 11/24/2010 11:39 PM, Songsong Gee wrote

[Discuss-gnuradio] How can I skip N ites for each input?

I know there is a block 'Skip Head' When I use it, however, I don't think that it works as I expected I expected that like this: Suppose a sequence 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 (one 1, seven 0's and repeat forever) I want to take just '1' for EVERY

Re: [Discuss-gnuradio] Carrier frequency mismatching?

basically different in baseband frequency... I really really cannot understand this magic :( 2010/11/19 Eric Blossom > On Fri, Nov 19, 2010 at 05:17:53PM +0900, Songsong Gee wrote: > > I use USRP sink and source and set frequency with 2.6 GHz > > When I run a flow graph, I

[Discuss-gnuradio] Carrier frequency mismatching?

I use USRP sink and source and set frequency with 2.6 GHz When I run a flow graph, I see like below: == A: Flex 2400 Tx MIMO B r.baseband_frequency = 260400.0 r.dxc_frequency = -400.0 r.residual_frequency = 0.0 r.inverted = False

[Discuss-gnuradio] Received signal is DANCING

I am now building a flow graph for ASK modulation,during the test, Here is my flow graph, http://picasaweb.google.com/lh/photo/-4xnI_UgFeSNENH3UGHgxw?feat=directlink And this is the result plot, http://picasaweb.google.com/lh/photo/QYy5NJEezHCqaMX-8AIFww?feat=directlink The bottom is the RX sign

Re: [Discuss-gnuradio] USRP problems (interpolation, decimation, sampling rate, frequency)

. 2010/11/17 Steven Clark > On Wed, Nov 17, 2010 at 3:41 AM, Songsong Gee wrote: > >> I use two USRPs. One sends a sinusoidal signal, and the other receives it. >> >> A flow graph and a result are here >> flow graph: >> http://lh5.ggpht.com/_byQV8nmc5FA/TOOTX9ReS

[Discuss-gnuradio] USRP problems (interpolation, decimation, sampling rate, frequency)

I use two USRPs. One sends a sinusoidal signal, and the other receives it. A flow graph and a result are here flow graph: http://lh5.ggpht.com/_byQV8nmc5FA/TOOTX9ReSYI/AQk/hWJ9Kf5GcAA/s800/%EC%8A%A4%ED%81%AC%EB%A6%B0%EC%83%B7-1.png result: http://lh5.ggpht.com/_byQV8nmc5FA/TOOTYGnBCUI/

[Discuss-gnuradio] Simple TX/RX test problem

I made a GRC flow graph like this image http://lh5.ggpht.com/_byQV8nmc5FA/TOJtmsZcuiI/AQY/ylUoDqXpXbw/s800/%EC%8A%A4%ED%81%AC%EB%A6%B0%EC%83%B7.png And the result is like this image http://lh5.ggpht.com/_byQV8nmc5FA/TOJtm9GDpXI/AQc/1MsP1mXFUNQ/s800/%EC%8A%A4%ED%81%AC%EB%A6%B0%EC%83

[Discuss-gnuradio] USRP underrun, overrun

Now I have problems with uU and uO Are they related with a computational power? (CPU clock, RAM, running on VM?) Now I'm using GRC on Ubuntu on VMWare on MacBook Pro Everytime I run a flow graph, I get tons of uUuUuUuUuUuUuOuOuOuOuOuOuOuO ___ Discuss-g

Re: [Discuss-gnuradio] USRP connection failure

return _usrp_swig.sink_c(*args, **kwargs) RuntimeError: can't open usrp 2010/11/15 Josh Blum > Did you setup the udev permissions on your system? -Josh > > > On 11/14/2010 07:13 PM, Songsong Gee wrote: > >> Now I'm trying to test a very simple TX/RX examples

[Discuss-gnuradio] USRP1 basic RX/TX frequency range

I am wondering that what frequency range does USRP1 basic RX/TX board support ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] USRP connection failure

Now I'm trying to test a very simple TX/RX examples I have a USRP1 and basic TX/RX board GNUradio flow graph is like a link here http://picasaweb.google.com/gee.songsong/Study#5539608314025540050 When I run it by pressing F6, it is terminated with an error message like below: Generating: "/home/

Re: [Discuss-gnuradio] How to use 2 USRPs on 1 PC.

have two usrps on one machine in continuous operation. One usrp is > using the computer's usb bus, and the other is hooked to a PCI usb > card, to ensure full bandwidth on both usrps. But unless you need full > bandwidth on each device, you probably don't need to do this. &g

[Discuss-gnuradio] How to use 2 USRPs on 1 PC.

I am testing RX TX example with 2 USRPs. but now I have to just 1 PC. When I connect 2 USRPs on 1 PC, my device list is like this: > ls -lR /dev/bus/usb /dev/bus/usb/001: total 0 crw-rw-r-- 1 root root 189, 0 2010-10-29 15:48 001 crw-rw 1 root usrp 189, 1 2010-10-29 15:59 002 crw-rw 1 r

[Discuss-gnuradio] Someone please check my ASK de/modulator.

I've just made AKS modulator and demodulator Currently, however, I couldn't use USRP. So I cannot make sure that it really works And also, I'm new to GNUradio and USRP! These are flow graphs made by GRC, and some test input file sources. (with lots of 0x00's and 0xFF's) http://goo.gl/sx5m (a ta

[Discuss-gnuradio] Does GNUradio have an envelope detector block?

Now I'm trying to build an ASK demodulator. I use GRC. However, I REALLY REALLY couldn't find an envelope detector. Does GNUradio have an envelope detector block? Or, do I have to make that one? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.or

Re: [Discuss-gnuradio] How to hold a values from file source

Thank you. I made it with help of josh's and your advice about frequency is helpful, too. :) 2010/10/28 Marcus D. Leech > On 10/27/2010 11:58 AM, Josh Blum wrote: > > Ok. I see the pattern... > > > > '0' = 0011 > > > > '1' = 00110001 > > > > Your plots look like one of the above patterns rep

Re: [Discuss-gnuradio] How to hold a values from file source

> the case? -josh > > > On 10/27/2010 12:40 AM, songsong gee wrote: > >> For more details, I have two files for test. One is 'all1' and another is >> 'all0' >> >> +-+ 'all1' >>

Re: [discuss-gnuradio] how to hold a values from file source

For more details, I have two files for test. One is 'all1' and another is 'all0' +-+ 'all1' |11| +-+ result (image) +-+ '

Re: [Discuss-gnuradio] How to hold a values from file source

somewhat sync problem? I'm new to GRC so it's a kind of hard things :( 2010/10/27 Josh Blum > > On 10/26/2010 10:17 PM, songsong gee wrote: > >> Currently I am trying to make an ASK (Amplitude Shift Keying) >> >> I use GNURadio Companion, >> >&g

Re: [Discuss-gnuradio] How to hold a values from file source

somewhat sync problem? I'm new to GRC so it's a kind of hard things :( 2010/10/27 Josh Blum > > > On 10/26/2010 10:17 PM, songsong gee wrote: > >> Currently I am trying to make an ASK (Amplitude Shift Keying) >> >> I use GNURadio Companion, >> >

[Discuss-gnuradio] How to hold a values from file source

Currently I am trying to make an ASK (Amplitude Shift Keying) I use GNURadio Companion, The program gets the input from file source and multiplies it with signal source. And I monitors via Scope and FFT plots You can see a diagram ASK.grc (image) And the result is somewhat

[Discuss-gnuradio] Is there a way to send AM signal from a file?

I have a file with a number of 0's and 1's. And I want to send it via AM modulation But I couldn't find any SIMPLE AM modulation block Do I have to write a new AM mod block? -- Seokseong Jeon a.k.a., *Gee Songsong* combined course in ITCE (IT Convergence Engineering), POSTECH WCU program mail: ge