Analysis of the Self-Interference Cancellation Capacity in Communication under Jamming Links

For a radio frequency (RF) interference cancellation based communication under jamming system, this paper investigates the achievable self-interference (SI) cancellation capacity of the multi-tap RF interference reconstruction scheme, derives the corresponding signal model in present of two taps, and analyzes the relationship between the cancellation capacity and the SI bandwidth as well as the tap number. The numerical analysis and simulations show that the achievable cancellation capacity decreases as the SI bandwidth increases and 6 taps can degrade an S-band 100-MHz bandwidth SI by about 70 dB.