| 基于信道和队列状态信息的跨层最优功率分配 | |
| 陈巍 ; 曹志刚 ; 樊平毅 ; LETAIEF K B ; CHEN Wei ; CAO Zhi-gang ; FAN Ping-yi ; LETAIEF K B | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 无线网络 网络信息论 功率分配 跨层 wireless networks network information theory power allocation cross-layer TN925 |
| 其他题名 | Optimal cross-layer power allocation with channel and queue state information |
| 中文摘要 | 研究基于完备信道和队列状态的最优功率分配策略。通过联合物理层和网络层的模型,建立了系统的跨层模型,进而在此基础上建立了功率分配的跨层优化问题。给出跨层最优功率分配问题的解析最优解和相应的算法,即"地窖注水"算法。说明传统的"注水策略"仅仅是所提出的地窖注水算法在不考虑队列长度下的一个特例。仿真将验证所提出策略相对于传统功率分配策略的性能优势。在同样的数据包到达率下,所提出的功率分配策略可以达到更小的排队时延。; The optimal power allocation was investigated when both channel and queue state information was taken into account.By modeling the system from a cross-layer perspective,an optimization problem was formulated on power allo-cation where the maximal power requirement of a user was determined by the number of its backlog packets.The ana-lytical solution as well as its algorithm,which refer to as water filling in cellar(WFIC),were proposed.The proposed WFIC can be reduced to traditional water-filling(TWF) method as a special case where queue state was ignored.Simula-tion results show that the proposed method can achieve lower queuing delay compared to conventional methods.; 国家自然科学基金资助项目(60472027,606180001)~~ |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/54524]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 陈巍,曹志刚,樊平毅,等. 基于信道和队列状态信息的跨层最优功率分配[J],2010, 2010. |
| APA | 陈巍.,曹志刚.,樊平毅.,LETAIEF K B.,CHEN Wei.,...&LETAIEF K B.(2010).基于信道和队列状态信息的跨层最优功率分配.. |
| MLA | 陈巍,et al."基于信道和队列状态信息的跨层最优功率分配".(2010). |
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