异构无线通信系统的融合机制和协同功率分配算法研究  

Investigation of Convergence Mechanisms and Cooperative Power Allocation Algorithms in Heterogeneous Wireless Communication Systems

作　　者：彭木根[1] 王文博[1] 

机构地区：[1]北京邮电大学泛网无线通信教育部重点实验室,北京100876

出　　处：《电子与信息学报》2009年第10期2348-2353,共6页Journal of Electronics & Information Technology

基　　金：国家863计划项目(2009AA01Z244)资助课题

摘　　要：该文提出了一种基于协同通信和无线中继技术的融合机制,以实现异构无线接入网的互联互通和融合。为了最大化所提异构协同网络方案的协同容量,从理论上给出了协同功率分配优化理论模型,并介绍了一种不同于传统注水理论的基于效用函数的协同功率分配算法,该算法在合理设置发射功率保证第1跳和第2跳链路的传输速率匹配的前提下能够优化系统性能。仿真结果表明所提协同功率分配算法有显著的性能增益。A cooperative communication and wireless relay techniques based convergence mechanism for the heterogeneous wireless communication system is presented to fulfill the functionalities of convergence and interworking. In order to maximize the capacity of the proposed heterogeneous cooperative network, the utility function based cooperative power allocation strategy is proposed. This paper gives the theoretical optimum model for the power allocation, and presents the detailed cooperative power allocation algorithm different from the conventional ＂water-filling＂ algorithm, in which the global optimization is guaranteed under the conditions of equivalent transmission rates between the first and second hops. The simulation results demonstrate that the proposed cooperative power allocation algorithm has a significant performance gain.

关 键 词：异构无线通信系统 协同通信 协同功率分配 

分 类 号：TN929.53[电子电信—通信与信息系统]