Design Of Multi-interference Management Mechanisms Based On The Adjustment Of Signals' Spatial Feature

With the rapid development of wireless communication technology and the wide application of heterogeneous networks and wireless local area networks(WLAN)in wireless communication systems,interference becomes the main factor that affects the network performance.The existing methods to deal with multi-interference interference management have a lot of shortcomings.Therefore,how to design the interference management mechanism,deal with the multi-interference and improve the spectrum efficiency,realize the concurrent transmission of multiple data signals,has become an important issue in the development of wireless communication.This paper designs and studies the method of multi-interference management in wireless communication system.The main work is as follows:At first,in this paper,based on interference steering method,two individual interference steering(IIS)schemes are proposed for designing multiple interference management mechanisms in a hybrid cellular network system consisting of a macro cell and a picocell.They are multi-target IS(MTIS)and single-target IS(STIS),respectively.Furthermore,we propose aggregated interference steering(AIS)that exploits the interaction between multiple interferences,and the Do F cost of AIS is reduced to one.Our theoretical analysis and indepth simulation results have shown that the proposed IS schemes can not only effectively manage the multi-interference,but also improve the spectral efficiency of the system.The multi-interference management methods based on IS,not only need the Do F of the receiver but also need the transmitting power of the implementation transmitter.In this paper,a cooperative interference alignment(CIA)method is proposed on the basis of the interaction between signals,aiming at WLAN.In this method,the management of individual interference is changed into the management of the whole effect of interferences,and the adjustment of single or two interferences replaces the adjustment of all interferences,which can deal with both homologous and heterogenous interferences.The simulation results show that the proposed method can improve the spectral efficiency of the interfered communication pair.Finally,the paper summarizes the research work,and gives the possible future research direction.