Re: USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
e doing subcarrier-wise multiplication with the inverse of your channel estimate, anyways, and that cancels that. Best regards, Marcus On 18.05.23 19:08, Hamed Al-Zubi wrote: > Okay. I need to figure out how can I do that. > > Thanks! > HZ > > On Thursday, May 18, 2023 at 11:

Re: USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
, Marcus On 18.05.23 18:21, Hamed Al-Zubi wrote: So, I have to get GPS modules and use GPSDO synchronization.  On Thursday, May 18, 2023 at 11:20:02 AM CDT, Marcus Müller wrote: On 18.05.23 18:10, Hamed Al-Zubi wrote: Actually, I don't know. I thought t

Re: USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
So, I have to get GPS modules and use GPSDO synchronization.  On Thursday, May 18, 2023 at 11:20:02 AM CDT, Marcus Müller wrote: On 18.05.23 18:10, Hamed Al-Zubi wrote: Actually, I don't know. I thought that by using PC clock in UHD sink and source block in gnuradio a

Re: USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
Any OFDM receiver needs a timing recovery method anyways, so that has nothing to do with how well your PC is suitable for synchronizing two devices. On 18.05.23 17:43, Hamed Al-Zubi wrote: > Thanks for your response, Marcus! > I have observed a constellation rotation for OFDM subcarriers

Re: USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
wrote: No, it's several orders of magnitude worse and generally insufficient for anything where you need synchronization. Best, Marcus On 18.05.23 17:12, Hamed Al-Zubi wrote: Hello Dears, I would like to inquire about the synchronization of two USRPs X300, one acting

USRP X300 Synchronization

2023-05-18 Thread Hamed Al-Zubi
Hello Dears, I would like to inquire about the synchronization of two USRPs X300, one acting as a transmitter (Tx) and the other as a receiver (Rx). If both USRPs are connected to the same laptop, I'm wondering if the accuracy provided by PC clock synchronization is similar (or close) to that

Re: Detected an invalid packet at item

2023-05-15 Thread Hamed Al-Zubi
rfections - any unfortunate condition in your receiver chain may also affect your reception. The questions that arise are: - What do you want to fix here? - Did you observe anything that you didn't expect? Cheers Johannes On 14.05.23 05:33, Hamed Al-Zubi wrote: > > Ed, > > I

Re: Detected an invalid packet at item

2023-05-13 Thread Hamed Al-Zubi
overdriving the receiver and causing distortion errors.  @(^.^)@ EdSent from my iPhone On May 12, 2023, at 8:10 PM, Hamed Al-Zubi wrote: Hello,  I am utilizing two USRPs, specifically the X300 models, along with GNURadio for the purpose of transmitting and receiving OFDM signals. I have

Re: Detected an invalid packet at item

2023-05-13 Thread Hamed Al-Zubi
clock source to "external". Also, good idea to isolate multipath effects, but don't forget that if your system can't deal with the multipath environment you're in, you've incorrectly designed your OFDM system. Best, Marcus On 13.05.23 02:09, Hamed Al-Zubi

Detected an invalid packet at item

2023-05-12 Thread Hamed Al-Zubi
Hello,  I am utilizing two USRPs, specifically the X300 models, along with GNURadio for the purpose of transmitting and receiving OFDM signals. I have implemented the OFDM flowgraphs available on Github for this purpose. The transmission and reception setup involves LOS (Line-of-Sight) configur

Channel State Information of OFDM in gnuradio

2023-05-03 Thread Hamed Al-Zubi
Dears,  I am doing some analysis on channel state information of OFDM signals. I used GNURadion rx_ofdm.grc (gnuradio/gr-digital/examples/ofdm at main · gnuradio/gnuradio) for signal transmission and reception through a channel model block. Then, the CSI has been extracted using Tag debug block

Save the output of Tag Debug to CVS file

2023-03-07 Thread Hamed Al-Zubi
Dears,  I am working on GNURadio flowgraph where I use a Tag Debug block (https://wiki.gnuradio.org/index.php/Tag_Debug).  In my grc-graph, the output of Tag debug is displayed on the command window as (I,Q) tuples. Can I save the output of the Tag debug displayed on the command into a cvs file?