Research Article

On Cancellation Capability of Full-Duplex RF Self-Interference Cancellation Schemes

Table 3

A case of multiple self-interference paths.

Delay (ns)Atten. (dB)Phase shift (deg)

Path 10.3150
Path 27.741−169
Path 38.542143
Path 413.344−156
Path 524.14861
Path 627.65012
Path 729.052−39
Path 830.153−35
Path 931.25575

For auxiliary antenna cancellation, this path is replaced by two LOS paths from the transmitting antennas, and each path has half of the original power. Based on the delay difference, the two paths get a phase difference of π at the carrier frequency and thus add destructively.