NI-USRP 2901 Channel Estimation

[rchang8]

Hello, I am a new user of LabView and USRPs in general, so please forgive me if this question seems obvious.

For the Tx and Rx Continuous examples provided with the NI USRP driver (e.g., Tx/Rx Continuous Async), is channel estimation already implemented in the VI? Is the resulting received signal in the Rx Continuous front panel just the pure received signal, or is it after channel estimation and other corrections have been conducted?

If the latter is true, is there a way to view this channel estimation, or is it done at a subVI level away from the user's ability to observe? Is there a way to disable it so that I can implement my own channel estimation?

Thank you in advance!

Regards,

Roger

[psisterhen · Accepted solution]

If you mean estimating the over-the-air channel between Tx and Rx (attenuation, phase change, multi-path effects, etc.), then: No, the examples do not do this.

There is some IQ imbalance correction built in to the RF front end chip, but I don't think that's what you mean.  You can implement your own channel estimation and correction in LabVIEW.

[rchang8]

Ah, that's good to hear. Thank you!