| 协作蜂窝小区上行链路的中继选择与功率分配 |
| |
| 引用本文： | 郭超平,韩鹍,张晓龙,李勇朝,张海林.协作蜂窝小区上行链路的中继选择与功率分配[J].西安电子科技大学学报,2012,39(3):27-33,42. |
| |
| 作者姓名： | 郭超平 韩鹍 张晓龙 李勇朝 张海林 |
| |
| 作者单位： | 西安电子科技大学综合业务网理论及关键技术国家重点实验室;西安通信学院 |
| |
| 基金项目： | 国家自然科学基金资助项目(61072069);国家科技重大专项基金资助项目(2011ZX03003-001-04,2012ZX03003-012);西安电子科技大学基本科研业务费资助项目(72001859);国家重点实验室专项基金资助项目(ISN090105);国家111计划资助项目(B08038) |
| |
| 摘 要： | 为了最小化能量受限的协作蜂窝小区的总代价,提出了上行链路的功率和中继等资源分配的模型.该模型是一个非线性约束、{0,1}组合优化问题,因而提出了一种自适应的资源分配方案对其求解.针对给定中继节点集合,该方案分别为每个源节点选择总代价最小的中继;而对于给定源和中继对,提出了最小化二者总代价的基于图论的最优功率分配算法.通过仿真和分析表明,该方案近似最优,能够发送更多的数据量,延长网络的寿命.
|
| 关 键 词： | 协作通信 资源分配 放大转发 功率分配 中继选择 代价 |
| 收稿时间： | 2011-08-05 |
Relay selection and power allocation for the uplink in cooperative cellular networks |
| |
| GUO Chaoping,HAN Kun,ZHANG Xiaolong,LI Yongzhao,ZHANG Hailin.Relay selection and power allocation for the uplink in cooperative cellular networks[J].Journal of Xidian University,2012,39(3):27-33,42. |
| |
| Authors: | GUO Chaoping HAN Kun ZHANG Xiaolong LI Yongzhao ZHANG Hailin |
| |
| Affiliation: | (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. Xi'an Communication Inst., Xi'an 710106， China) |
| |
| Abstract: | An assignment model of uplink resources,namely,power and relay,is proposed to minimize the total cost of energy-constrained cooperative networks.The model is a non-linear constraint,0-1 integer programming problem.An adaptive resource allocation scheme is presented to solve it,which selects the relay with the lowest total cost for each source from the given relay set.A graphic-theory-based optimal power allocation algorithm is presented to minimize their total cost for a given source-relay pair.Simulation and analysis show that the scheme is suboptimal and can transmit more data than other algorithms and prolong network lifetime. |
| |
| Keywords: | cooperative communications resource allocation amplify-and-forward power allocation relay selection cost |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《西安电子科技大学学报》浏览原始摘要信息 |
|
点击此处可从《西安电子科技大学学报》下载全文 |
|
