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在蜂窝与设备到设备通信混合网络下,把设备到设备通信的系统吞吐量作为优化目标,同时考虑设备到设备链路和蜂窝链路的服务质量,提出了一种联合功率控制和信道分配的优化方案.在该方案中,信道分配部分采用粒子群优化算法,并在功率控制部分的帮助下来为设备到设备链路分配最优的复用信道;功率控制部分针对信道分配部分给定的信道分配,通过优化链路发射功率来最大化系统吞吐量.仿真结果表明,所提联合优化方案权衡了系统吞吐量和接入链路数性能之间的折中关系,在保证所有接入链路服务质量的前提下提升了系统整体性能.
Under the hybrid system of cellular and device-to-device communication, the system throughput of device-to-device communication is taken as the optimization goal. At the same time, the service quality of device-to-device link and cellular link is considered, and a joint power control and channel allocation In this scheme, Particle Swarm Optimization (PSO) algorithm is used in the channel allocation and the optimal multiplexing channel is allocated for the device-to-device link with the help of the power control. The power control part is used to allocate part of the channel And optimizes the link transmission power to maximize the system throughput.The simulation results show that the proposed joint optimization scheme balances the compromise between the system throughput and the number of access links and ensures that all access links Service quality under the premise of improving the overall system performance.