Re: About enhance wireless communication

[Christophe Seguinot]

1. Please ,as I asked you, add a spectrum analyzer on the receive path to at least observe if some signal is there or not!
   
2. If there is no signal (As I observe from my LimeSDR-Mini there is one problem: which one ?
   
3. Question to other: Is there any limitation on the lowest sampling rate os LimeSDR-Mini. I did not found that (only on google link which tells that it should work with as low as 100 kHz.
   
4. If sampling rate should be increased (I'm not sure of this) then you should add interpolation in the transmist path and decimation in the receive path.
   

P.S. for your flowgraph without LimeSDR Mini don't forget to add a throttle

On 09/02/2021 10:42, kaihua cheng wrote:

Hello,  below is the flowchart  I am using for wireless transmission. But, it does not decode the data properly every time.   I guess because  some data are corrupted in transmission.   I have already maximised the gain of LimeSDR. Can anyone tell me how to enhance wireless transmission in GNU radio ?

 

 

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ccsds+GMSK+LIMEsdr_1.grc
Description: application/gnuradio-grc