Transmission Scheme and Outage Probability Analysis for MIMO Decode-and-Forward Two-Way Relay Systems
Lüxi Yang · Signal Processing · 2010
In MIMO decode-and-forward(DF) two-way relay systems,we designed the transmission schemes and derived the closed-form expressions for the outage probability of the two-way relay system,based on two different scenarios of channel state information(CSI).Assuming perfect CSI,we apply maximum-ratio-transmission and combining(MRT-MRC) technique to design the beamforming and combining vectors.Without perfect CSI,we design the transmission scheme with limited feedback,and verify the analytical results through two kinds of codebooks,i.e.,random vector quantization and Grassmann.The simulation results show that,the proposed transmission schemes for the two-way relay system can outperform other transmission schemes in the performance of outage probability,and the accuracy of the derived closed-form expressions is also verified by the simulation results.