Re: [Discuss-gnuradio] sell amplifier LNA duplexer

I do not know if the previous mail sent sucessfully or not. so reply again. Sorry about that. provide amplifier, LNA, duplexer Regards On Mon, Apr 28, 2014 at 10:48 AM, John Wu wrote: > Hi list, > If anyone needs amplifier, LNA, duplexer please contact me. I can make any > kind of

Re: [Discuss-gnuradio] WCDMA/UMTS receiver implementation

Michael is correct. before demodulation the received signal should be correlated. Michael, you said UMTS using scrambling code to do the timing recovery. But the scrambling code is to distinguish MS in the uplink, each MS use different scrambling code so I think the correlation shouldn't be related

[Discuss-gnuradio] Any one know how to detect CDMA2000 or EVDO pilot channel

Hi all, I am implementing CDMA2000 and EVDO phy layer. I know pilot channel is used to estimate channel and synchronization, but I don't know how to use it any one know how to detect pilot channel and how to take advantage of pilot channel to estimate channel and synchronization. Or just give a hin

Re: [Discuss-gnuradio] anyone know sine wave or square wave external clock is better for usrp

Thanks! On 4/23/11, Daniel Bartel wrote: > Hello. > >> I need to use external clock on usrp, there are two kinds of clock: sine >> wave and square wave. which >> is better for usrp? > > I used for my N210 a square wave signal, because it was suggested on > http://www.ettus.com/uhd_docs/manual/htm

[Discuss-gnuradio] anyone know sine wave or square wave external clock is better for usrp

Hi all. I need to use external clock on usrp, there are two kinds of clock: sine wave and square wave. which is better for usrp? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] how to build std_xrxhb_xtx.rbf from uhd fpga source

Hi all, I compile the uhd fpga source then produce rbf like that: usrp_std.rbf. I don't know how many rx and tx this rbf can support. I guess the count of rx and tx it support is in some configure file. so how to config it if I want to build a 2rx and 2tx rbf? And I also need this config for inband

[Discuss-gnuradio] confuse with the relation between ADC and DDC

the ADC and DDC scheme is shown in: http://swigerco.com/gnuradio/usrp_diagrams/mux_example_2.jpg >From what I know, DDC take a signal as an input and output the I and Q signals. But in usrp scheme DDC take I and Q signals from ADC as inputs. So what does ddc do in usrp? ___

[Discuss-gnuradio] run two usrp app on two usrp meet: usrp_standard_common: failed to read FPGA cap register.

Hi all, I run two usrp apps on two usrp, each set the which usrp correctly, but meet usrp_standard_common: failed to read FPGA cap register when I run the second app. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/

[Discuss-gnuradio] Hi all, how to change usrp clock to 52M in gnuradio 3.3

Hi all, I want to change usrp clock to 52M, there are some document about change usrp clock in gnuradio 3.1 and 3.2 but none for 3.3. how to change usrp clock to 52M in gnuradio 3.3 ? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists

[Discuss-gnuradio] compile fpga code error

Hi all, I use Qartus II version 9.1 web edition to compile fpga code, meet a lot of error. I enter "D:\fpga\usrp1\toplevel\usrp_inband_usb" then open "usrp_inband_usb.qpf" then I compile this project. error below: Error (10054): Verilog HDL File I/O error at adc_interface.v(3): can't open Verilog

[Discuss-gnuradio] where to get inband_2rxhb_2tx.rbf and inband_1rxhb_1tx.rbf source

Hi all, I want to make some modify on fpga code, anyone know where to get inband_2rxhb_2tx.rbf and inband_1rxhb_1tx.rbf source to reference. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] about the channel distinguish when read from multi channel

Hi all, I create a standard rx which contain 2 channels for two rx daughter board. Now I use read function read the sampled data, and deinterleave the data, but which channel is related to which daughter board, and the deinterleaved data is related to which channel?

[Discuss-gnuradio] cant create two rx

Hi all, I need to use two rx in my project, however I can not create two rx. My code create rx is bellow: Rx1 = usrp_standard_rx_sptr(usrp_standard_rx::make(0,decimRate,1,-1, usrp_standard_rx::FPGA_MODE_NORMAL, 1024,16*8,rbf)); Rx2 = usrp_

[Discuss-gnuradio] what is the different between usrp_prims_libusb0 and usrp_prims_libusb1?

what is the different between usrp_prims_libusb0 and usrp_prims_libusb1? what case are they used? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] If uhd support a more precise In band signaling timestamp in the resolution 1ns or 10ns?

Hi Matt, I recently learn the uhd project which contain a double type timestamp in band signaling. I want to know if this change really take a more precise timestamp from usrp hardware or it just an interface change to meet other hardware? For now, I want to measure the time of flight to count a di

[Discuss-gnuradio] Re: hi all, I want to support fpga to add a timestamp when the usrp send and receive data package

Hi all, I learn from some document that usrp have take a timestamp in nanosecond with the data package. Can anyone tell me more detail about that? Since I have not receive usrp board I can not do the experiment to confirm it. Thanks. On Thu, Jun 3, 2010 at 11:40 AM, John Wu wrote: > Hi

[Discuss-gnuradio] hi all, I want to support fpga to add a timestamp when the usrp send and receive data package

Hi all, I need to measure the time of flight with the accuracy in nanosecond, now I found an ic that can measure the time in ns. So now I want to support fpga to read the timestamp when receive and send a data package with modifying the fpga firmware. Can someone estimate whether the usrp or usrp2

Re: [Discuss-gnuradio] Hi all, how to use usrp and gnuradio support triangulation to locate a cell phone

Myler wrote: > On May 26, 2010, at 5:25 AM, John Wu wrote: > > > Harley Thanks > > I find another way call hyperbolic location method that is more accurate > to locate a cell phone. and what u said is correct, I must first get a > phone's communication. Now the easier way

Re: [Discuss-gnuradio] Hi all, how to use usrp and gnuradio support triangulation to locate a cell phone

right? On Tue, May 25, 2010 at 8:11 PM, Harley Myler wrote: > > On May 24, 2010, at 10:06 PM, John Wu wrote: > > > Hi all, I am a fresh on usrp and gnuradio, now I want to use them to > support locate a cell phone, and what I know is locate a cell phone need to > use triangulat

[Discuss-gnuradio] can not open link "http://gnuradio.org/svn/usrp-hw/trunk/USRP_REV_4_2/"

Hi all, I want to get usrp board schematic, and this link is usrp board schematic pdf download link, however it can't be open. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Hi all, how to use usrp and gnuradio support triangulation to locate a cell phone

Hi all, I am a fresh on usrp and gnuradio, now I want to use them to support locate a cell phone, and what I know is locate a cell phone need to use triangulation method. Anyone know if gnuradio contain triangulation block or any open triangulation algorithm available? Thanks!

[Discuss-gnuradio] Hi all, how to use gnuradio to get the distance between a gsm mobil phone and the usrp receiver?

Hi all, how to use gnuradio to get the distance between a gsm mobil phone and the usrp receiver? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Hi all, how to use gnuradio to get the distance between a special gsm phone and the usrp hardware?

Hi all, i am going to support this feature above gnuradio, but i know little about gnuradio before. What is the correct way to support this feature? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-g