Full-Duplex MIMO Channel with Self-Interference Alignment and Zero Forcing

Abstract

One of the purposes of next generation networks is to deliver high data rate with high spectral efficiency. Full duplex wireless network is a promising technique. Here, we investigate the zero forcing (ZF) of full-duplex multiple input multiple output (MIMO) based on antenna configurations to cancel self-interference. Self-interference is the main challenge of full duplex wireless networks. We propose two scenarios i.e. pure ZF and ZF with self-interference alignment. We derive sum rate expression for pure ZF and ZF with self interference alignment and obtain same expression of them. However, ZF with interference alignment has less number of receive antenna than pure ZF. We show that the sum rate increases as the number of antennas increases as well as the power. We show that the outage probability decreases as the number of antennas increases. As the number of antennas increases, channel multiplexes transmission rate and decreases outage.