Full-Duplex Relay based on Zero-Forcing Beamforming

In this paper, we propose a full-duplex relay (FDR) based on a zero-forcing beamforming (ZFBF) for a multiuser MIMO system. The ZFBF is employed at the base station to suppress both the self-interference of the relay and the multiuser interference at the same time. Numerical results show that the proposed FDR can enhance the sum rate performance as compared to the half-duplex relay (HDR), if sufficient isolation between the transmit and receive antennas is ensured at the relay.

[1]  Taneli Riihonen,et al.  Spatial loop interference suppression in full-duplex MIMO relays , 2009, 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers.

[2]  D. W. Bliss,et al.  Simultaneous Transmission and Reception for Improved Wireless Network Performance , 2007, 2007 IEEE/SP 14th Workshop on Statistical Signal Processing.

[3]  Helmut Bölcskei,et al.  Fading relay channels: performance limits and space-time signal design , 2004, IEEE Journal on Selected Areas in Communications.

[4]  I. N. Imam,et al.  Generalized inverses of large matrices using the generalized Schur complement , 1990, IEEE Proceedings on Southeastcon.

[5]  Thomas L. Marzetta,et al.  Fast transfer of channel state information in wireless systems , 2006, IEEE Transactions on Signal Processing.

[6]  Andrea J. Goldsmith,et al.  Capacity and power allocation for fading MIMO channels with channel estimation error , 2006, IEEE Trans. Inf. Theory.

[7]  Robert W. Heath,et al.  MIMO Relaying With Linear Processing for Multiuser Transmission in Fixed Relay Networks , 2008, IEEE Transactions on Signal Processing.

[8]  J. P. McGeehan,et al.  Antenna isolation measurements for on-frequency radio repeaters , 1995 .

[9]  J.H. Reed,et al.  Antenna Isolation, Wideband Multipath Propagation Measurements, and Interference Mitigation for On-frequency Repeaters , 2004, IEEE SoutheastCon, 2004. Proceedings..

[10]  Andrea J. Goldsmith,et al.  On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming , 2006, IEEE Journal on Selected Areas in Communications.

[11]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[12]  Hyungsik Ju,et al.  Improving efficiency of resource usage in two-hop full duplex relay systems based on resource sharing and interference cancellation , 2009, IEEE Transactions on Wireless Communications.

[13]  Bo Wang,et al.  On the capacity of MIMO relay channels , 2005, IEEE Transactions on Information Theory.