Research On Interference Suppression Scheme Of Information And Energy Cooperative Transfer Based On Energy Beamforming

In the research of the mobile communication network,it has been accepted that the interference among the cells will reduce the SINR(Signal to Interference plus Noise Ratio).However,in the simultaneous wireless information and power transfer system,the interference signal will increase the energy harvested by terminals.And the 3D-beamforming can not only improve the downlink throughput by suppressing the ICI,but also effectively control the signal power,which is used for energy harvesting.With the rapidly development of mobile terminal,power consumption becomes the major restrictive problem.And it cannot be solved through traditional methods,especially in some special domains(for example the medical devices planted into human body).In this paper,the author has studied the interference suppression scheme based on 3D-beamforming and resource allocation(time or power domain)in the uplink and downlink.Then the better spectrum utilization efficiency will be reached.There are two interference suppression schemes based on 3D-beamforming.The first one has considered the uplink and downlink interference suppression in the energy harvesting system of power splitting.Moreover,we desire better-associated throughput.In addition,there are two parts in the scheme:adaptive beamforming and interference.Their roles are improving the power of the useful signal on the access point or balancing between interference suppression and energy harvesting.When the energy harvesting is taken into consideration,the spectrum efficiency of this scheme becomes better.In addition,the second one has considered the green communication.Based on interference suppression scheme of 3D-beamforming,the effective spectrum efficiency is reached by adaptively adjusting the time slot or power of information and energy signal.And the scheme optimization includes two steps:Firstly,the best methods of information and energy beamforming is separately obtained(method A and B);Secondly,the optimal spectrum efficiency is obtained by dynamically adjusting the time slot and power splitting ratio,when the method A and B is separately used for information and energy beamforming.Monte-Carlo simulation has been conducted for the two proposed schemes in this paper.Moreover,the simulation results have proven their superiority and availability.