can we use FIR filter of AD9361 IP Core as RRC filter? If yes,where to load coefficient of RRC filter in driver?? or we need to implement our own RRC filter in FPGA.
The FIR of the AD9361 can be used as an RRC filter but you'll need to take into account the characteristics of the analog and half-band filters in front of it to get optimal response. This is a good resource to understand how the FIR design works: MATLAB Filter Design Wizard for AD9361 [Analog Devices Wiki]
See this section on how to load the coefficients under Linux: AD9361 high performance, highly integrated RF Agile Transceiver™ Linux device driver [Analog Devices Wiki]
If you're using the no-OS driver use the 'ad9361_set_rx_fir_config' function as described here: AD9361 No-OS Software [Analog Devices Wiki]
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