USRP B210 under and overflow

I am using USRP B210 with simulink but when i run my model first time no overflow and underrun comes but after second and third time problem started. How to fix the problem

[fatih özdemir]

did you fix the problem. I am also having underrun on my USRP B200.

Answer 1

[Muhammad Bilal Khan]

Yes I fix this problem by reducing the sample rate and matching sample rate of Tx and Rx

[fatih özdemir]

I also fixed it on the transmitting-end via burst mode. I do have another problem regarding packet detection( I just see noise and no packets/waveforms). Could you help me with it My mail is [e-mail]

I started recently with Matlab's Usrp package

Many thanks!

[Muhammad Bilal Khan]

You need to study all the parameters because multiple factors effects your reception.

1- Gain

2- sampling rate

3- overflow

4- underflow

5- Master clock rate

6- interpolation

7-decimation etc

Answer 2

[Mir Lodro]

You need to comment out or reduce the number of visualisers in your baseband model. In addition to that you must concentrate on Tx Gain, RX Gain and the AGC gain. Additionally, different USRPs have different Tx and Rx gain ranges.