The Design And Implementation Of Multi-User Collaborative Communication Of Lte Downlink

LTE is the evolution of3G, because of the high peak rate, cells capacity improvement, and delays declining ability etc., LTE has became heat point of research work in communication field. And LTE-Advanced which is the evolution of LTE, is now the4G crite-rion.This paper researches on collaborative communication technology base on LTE system. We choose two heat points of collaborative commu-nication:resource allocation algorithms and relay system. Embedded the two parts into the platform respectively, verified their performances.Firstly, this paper deduces a new algorithm based on different traffic models, and proposes suboptimal method to meet throughput and fairness index. The algorithm is embedded into the platform, and simulation result shows that it has improved system throughput, and reduced code error rate.And secondly, I focus on the Relay technology, which can improve throughput and reliability of the system. The thesis introduces relay tech-nique characteristic, and we design a relay which can decode and forward signals, and eNodeB takes charge of all networks based on the platform. The system model, designing of different module and transmitting pro-cedure are detailed introduced in the paper. Simulation results show that the performance of the platform added with relay is improved distinctly, and backhaul link is the key factor effecting system performance.