协同无线网络中基于能量价格的信道与功率分配联合优化

针对协同无线网络中多终端协作通信的信道分配和功率优化问题,在源节点和目的节点之间实现了基于多种传输方式(直接传输、复用传输和中继传输)的并行数据传输,并通过将终端节点建模为能量卖家,提出了基于能量价格的信道分配与功率控制联合的优化方案. 仿真结果表明,并行传输方式下采用新方案所消耗的系统能耗成本和所获得的网络生存时间明显优于单一传输方式. 此外,通过引入能量价格激励机制,证明了在相同并行传输方式下最优速率分配比平均速率分配在系统性能上有显著改善.

Joint Optimization with Channel and Power Allocation Based on Energy Pricing in Cooperative Wireless Network

Joint optimization assisted by the channel and power allocation of multi-terminal cooperative communication is a new paradigm for cooperative wireless network, and parallel data transmission between the source and destination node is implemented based on various transmission modes (e.g., direct, dual-hop and relay transmission). By modeling nodes of network as energy sellers, a new joint optimization scheme based on energy pricing is proposed for channel allocation and power control. Simulation shows that system energy-consumption cost and network lifetime of the parallel transmission using our proposed scheme significantly outperforms the single transmission. Moreover, by introducing energy price incentive mechanism, the superiority of the optimal rate allocation over average rate allocation in terms of system performance is verified.