Hi,
To do some wireless tests on my B210, I need to modify gain and frequency
on real time. That means the RF gains or frequency parameters would be manual
changed during RF transceiving.
Based on this, I tried to use UHD function ( uhd_usrp_set_rx_gain() ) to
reset the Rx gain while Rx streaming is not set to be stopped. Because this
whole wireless test is based on precise timing.
However, after resetting the Rx gain on host PC level, the continuous
fetched samples were probably effected by this RF changing and then resulted in
wrong timing and failed synchronization very soon. Meanwhile, I did the
resetting on the gap between two frames on purpose in case of influences on
next frame.
I looked up the UHD manual and mail-list but found nothing. Most of them
are talking about how to implement AGC on FPGA level but I want to do it on PC
level through my C program.
Besides, the Rx AGC module in UHD is not suitable for me since I don't want to
raise Rx gain when there is no wanted signal at all.
Could you please help me about what should I do to minimize the damage
caused by resetting ? How to reset RF gains or frequency properly without fatal
influences?
And please tell me where I am wrong. Thanks a lot.
Best regards,
Zhenyu_______________________________________________
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