A computing device can include a radio receiver to receive a radio signal from a radio transmitter of a second computing or communication device. The radio receiver can experience radio frequency interference. The computing device can also include a digital signal generator. The digital signal generator can be to process a signal (S1) underlying a source of the radio frequency interference. The digital signal generator can also be to generate a digital signal (S1). The digital signal generator can further be to inject the digital signal (S1) into the radio receiver to cancel the radio frequency interference around the radio frequency of interest.