Capacity bound for full-duplex multiple-hop MIMO relays system in rayleigh fading

In multiple-hop relay systems, the system channel capacity is restricted by the bottleneck relay. In order to prevent some relays from being the bottleneck and guarantee the system channel capacity, the method for optimizing distance between each relays and transmit power of each relay is proposed in this paper. The optimizing both the distance and the transmit power is effective and can achieves high channel capacity. The bound of the downlink, the uplink channel capacity for each number of relays and the limitation of channel capacity when the number of relays tends to infinity, are found. The channel model is indicated the flat Rayleigh fading.