Phase Noise in Full-Duplex Radios Using Off-the-Shelf Oscillators.

This letter analyzes the effect of phase noise (PN) on digital non-linear self-interference (SI) cancellation for low delay spread non-linear SI channels typical of small form factor in-band full-duplex (IBFD) radios in indoor environments. Use of a shared local oscillator (LO) between the transmit and receive radios is assumed, and it is shown that, in theory, un-cancelled SI due to PN can be red...