Figure 6
From: Water-filling for full-duplex multiple-hop MIMO relay system
The end-to-end channel capacity of a half-duplex system when snr i is changed. The higher the SNR is, the more rapidly the end-to-end channel capacity of the outdated CSI decreases. The average transmit power system is the most robust, and scheme 3 is affected by the outdated CSI much more than the others.