Performance Analysis of Zero-Forcing for Two-Way MIMO AF Relay Networks

Gayan Amarasuriya, Chintha Tellambura, Masoud Ardakani
2012 IEEE Wireless Communications Letters  
Transmit/receive zero-forcing (ZF) is studied for multiple-input multiple-output (MIMO) amplify-and-forward (AF) two-way relay networks (TWRNs). Specifically, two sources employ transmit and receive ZF during two consecutive timeslots for transmission and reception, respectively, while the relay performs analog network coding. Each source then requires only the instantaneous respective source-to-relay channel knowledge, and hence, the complexity of practical implementation is significantly
more » ... significantly reduced. The performance of this system set-up is studied by deriving the upper and lower bounds of the overall outage probability, their high signal-to-noise ratio approximations and diversity order. To obtain valuable insights into practical MIMO TWRN implementation, the diversity-multiplexing trade-off is also quantified. Index Terms-Two-way relay networks, MIMO, zero forcing.
doi:10.1109/wcl.2012.010912.110220 fatcat:dkxj32p5ejg7bcjepo5mmtxwgy