D2D通信中一种资源分配与功率控制结合的方案

以underlay方式工作的D2D(Device-to-Device)通信通过资源共享复用蜂窝网络中的资源，在提高系统资源利用率的同时，对已有蜂窝链路带来了同频干扰。为了减小因无线资源复用带来的干扰，提出了一种资源分配与功率控制相结合的方法。以最小化系统干扰为目的，通过在D2 D链路之间合理地分配资源，保证了蜂窝链路的通信质量；同时动态地调整D2 D链路的发射功率，在保证相应蜂窝链路干扰可控的情况下，合理提高了D2 D链路的通信质量。仿真结果表明，与现有方案相比，所提出的算法能够有效地提高D2 D通信与蜂窝用户共存场景下的系统性能。

A joint method of resource allocation and power control for device-to-device(D2D) communication

By sharing the resource with cellular users,device-to-device(D2D) communication underlaying cellular network can improve the system resource utilization. But unfortunately,frequency reuse interference will be introduced between D2D users and cellular users. In order to coordinate the co-channel interference,a combined strategy of resource allocation with power control is proposed in this paper. The proposed strategy allocates resource to D2D links based on the overall system optimization for minimum interference. Furthermore,each D2D transmitter can dynamically adjust the transmit power so as to improve the qualities of D2D pairs while ensuring the interference to cellular users to remain in a tolerable range. Simulation analysis demonstrate that compared with the existing methods,the proposed method can effectively improve overall system performance.