Research On Key Techniques Of Information And Energy Efficient Transmission In Wireless Networks

The efficient transmission and energy optimization of wireless networks has been a research hot topic in theses years.With the commercial deployment of 5G cell system and the development of key technologies for 6G cell system,data transmission of energy-efficient is an open issue for wireless communication network.In addition,low-power nodes have a requeirment for continuous functionality of nodes due to the deployments of very large nodes.The simultaneous wireless information and power transfer(SWIPT)is expected to solve this problem.In this study,information and energy efficient transmission for wireless networks has been taken as research topic,such as wireless network energy optimization strategy,multi-input multi-output amplification and forwarding two-way relay system,full-duplex two-way relay channel and SWIPT.The main research results and innovations are as follows:Two tracking schemes are proposed and analyzed.First of all,we first define the network and communication models.Meanwhile,we use information delay penalty to represent the other performance metric of tracking scheme.Then,two tracking schemes are proposed and analyzed.Tail Following and Waiting Ahead are proposed.From an energy efficiency perspective,the Waiting Ahead solution is better than the Tail Following solution.The proposed scheme can be further applied to systems of large-scale wireless networks.Lastly,performances of the proposed schemes are demonstrated by the simulation results.Based on the Lattice coding(LC),the SWIPT system in the wireless two-way relay forwarding network is studied.The SWIPT optimization problem is established for the minimum transmission power combination.The optimization strategy is analyzed and researched.The SWIPT maximum rate joint optimization algorithm based on Lattice coding is proposed.Based on the SDR and SDP methods,the rate optimization problem with multiple variables is established.The effectiveness of the proposed algorithm is shown by the simulation platform.A multi-input multi-output amplification and forwarding two-way relay system is researched.Based on the minimum mean square error criterion,a joint beamforming optimization algorithm for the system is proposed.In addition,the SWIPT joint optimization model of full-duplex two-way relay is studied.A low complexity diagonalized iterative algorithm and an optimization scheme based on minimizing total transmission power are proposed.The simulation results show that the low complexity scheme converges faster and solves the problem of high system complexity.The simulation results show that the proposed scheme has good performance.In current,SWIPT technology already has prototype systems in the lab environment,and the problems of designing practical and the robust for SWIPT systems have not to be solved.The above problems are the main direction in future.