Conclusions and Future Work

Abstract

Along this book, we consider the problem of SI-cancellation in full-duplex wireless communications systems. Conventional approaches subtract the SI from the received signal and thus reveal the need to estimate and reconstruct the received SI. In the previous works, the proposed estimators ignore the intended signal by either using a training period to estimate the SI parameters, resulting in a reduced spectral efficiency, or simply considering the intended signal as additive noise. In our work, we incorporate the intended signal in the estimation process by exploiting its second-order statistics and the transmitted pilots. We develop new estimation algorithms for SI-cancellation that achieve superior accuracy and spectral efficiency than the available approaches. The main contributions and corresponding results are summarized as follows.