| Title | Wideband full-duplex MIMO relays with blind adaptive self-interference cancellation |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Antonio-Rodríguez, E, Werner, S, López-Valcarce, R, Riihonen, T, Wichman, R |
| Journal | Signal Processing |
| Volume | 130 |
| Start Page | 74 |
| Pages | 74-85 |
| Date Published | 01/2017 |
| ISSN | 0165-1684 |
| Keywords | adaptive signal processing, compass, full duplex, winter |
| Abstract | We develop adaptive self-interference cancellation algorithms for both filter-and-forward and decode-and-forwardmultiple-input multiple-output relays. The algorithms are blind in the sense that they only exploit the spectral propertiesof the transmitted signal to identify the self-interference channel, while dealing with frequency-selective channels andarbitrary signal spectra. Our approach is non-intrusive in the sense that the algorithms can successfully identify, track,and cancel the self-interference distortion while the relay is operating in its normal mode. We study the stationarypoints of the algorithms and analyze under which conditions they achieve perfect cancellation of the self-interference.Simulation results show that the algorithms provide residual self-interference levels below the noise floor by usingthe time samples of only a few OFDM symbols. |
| DOI | 10.1016/j.sigpro.2016.06.010 |
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