| 主权项 |
1. A method of conditioning a first signal transmitted between a first and a second near field communication, NFC, device, the method comprising:
determining a transfer function representative of a distortion arising from transfer of a signal from the first NFC device to the second NFC device by:
transmitting a second signal from the first NFC device to the second NFC device, the second signal comprising a maximum length sequence, MLS, andcalculating a cross-correlation of the second signal with a version of the second signal modified by the transfer function to thereby derive a measure of the transfer function; determining a pre-distortion function from the transfer function; and applying the determined pre-distortion function to the first signal, wherein; the pre-distortion function at least partially compensates for the determined transfer function. |
