A Method for Broadband Full-Duplex MIMO Radio

Date Added: Dec 2012
Format: PDF

The authors present a Time-Domain Transmit Beamforming (TDTB) method for Self-Interference Cancelation (SIC) at the Radio Frequency (RF) frontend of the receivers on broadband full-duplex MIMO radios. It is shown that the conventional Frequency-Domain Transmit Beamforming (FDTB) method along with the Orthogonal Frequency Division Multiplexing (OFDM) framework does not generally perform SIC in the prefix region of a transmitted frame. A hardware based test of the TDTB method shows a 50 dB SIC over a bandwidth of 30 MHz.