Research On Interference Coordination Technology Of Millimeter Wave Multi-antenna System

With the rapid development of wireless mobile communication system and the impact of various kinds of information on people in the information age,people constantly put forward higher requirements on the rate of information acquisition,bit error rate,the distance of information transmission and the system capacity of the channel in the mobile communication system.Multi-antenna technology can transmit or receive multiple independent data streams in the same channel at the same time.To a certain extent,it greatly improves the transmission rate of the channel.At the same time,the ultra-high frequency millimeter wave band with abundant spectrum resources has also attracted wide attention.Because of the small wavelength of millimeter wave,a large number of antennas can be installed without increasing the volume of existing communication equipment.The large-scale antenna array can provide high beamforming gain,so that the whole system can obtain sufficient link margin.Therefore,the millimeter wave multiantenna system,which combines millimeter wave and multi-antenna technology,can improve the system capacity very well.However,due to the increase of the number of antennas and the increase of the distance of information transmission,there will be different degrees of signal interference problems.It is the key to solve the problem of signal interference in millimeter wave multi-antenna system.In this paper,interference alignment algorithm based on multi-antenna at base station and multi-antenna interference alignment algorithm based on relay cooperation are introduced in detail.With the increase of the number of antennas,the interference alignment algorithm based on multi-antenna at the base station has significantly improved the channel capacity compared with the interference alignment optimization algorithm based on zero-forcing precoding.With the increase of signal-to-noise ratio,the channel capacity of interference alignment algorithm based on relay cooperation is several times or even tens of times that of orthogonal algorithm and linear space interference alignment algorithm.The feasibility of the two algorithms in eliminating interference and improving channel capacity is compared.Figure 22;Table 2;Reference 54...