[EMAIL PROTECTED] wrote:
Brian,
If you refer to the usrp\fpga\sdr_lib\adc_interface.v
this is a comment stating: \\level sensing for AGC
on line 67 of the verilog code file.
I have read on the wiki that AGC can be implemented by moving resistors around,
can you elaborate on this: which resistors, and on what board?
I am assuming that there is some sort of feedback loop for the FPGA to an
amplifier which uses the RSSI, is there not one?
By moving some resistors around you can implement a completely analog
AGC function on the RFX900, 1200, 1800, and 2400. It will not work on
the RFX400.
In general, there are many ways you can implement AGC, depending on
where you implement the RSSI sensing and the control functions. Nothing
has been done to prevent you from doing any of these, but it is an
exercise left to the user, as they say.
Matt
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