Massive MIMO Relaying with Hardware Impairments and ZF Processing

In this paper, we consider the half-duplex massive MIMO relaying with the effect of hardware impairment. Depending on the half-duplex relay in amplify-and-forward (AF) scheme, multiple sources can simultaneously communicate with multiple destinations. In the case of requiring channel state information (CSI), relaying can use zero forcing (ZF) method to process receiving and transmitting signals. The achievable rate expression of relaying system with hardware impairment can be obtained. Depending on the deduced rate expression, the power scaling property can be analyzed in different cases. As the power of the source, uplink pilot and relay’s transmitter are scaled, the results corroborate that when the number of antennas configured on the relaying grow without bound, the achievable rate can reach a fixed value.