基于子载波选择配对及功率优化分配的OFDM系统  

OFDM system based on subcarrier select pairing and optimal power allocation

作　　者：蒋勇[1] 赵作鹏[2] 

机构地区：[1]江苏联合职业技术学院信息技术系,江苏徐州221008 [2]中国矿业大学计算机科学与技术学院,江苏徐州221008

出　　处：《电子技术应用》2015年第8期90-93,共4页Application of Electronic Technique

摘　　要：为了提升OFDM协作通信系统的网络覆盖率及网络容量,提出了一种基于子载波选择配对及功率优化分配的OFDM系统。在OFDM的系统模型上进行中继配对和非中继配对的性能分析,将子载波选择配对转换为一个整数规划问题,并采用基于匈牙利算法的规划方法进行配对矩阵的计算;根据OFDM系统的功率分配问题,采用KKT条件下优化中继功率及电源功率的方法进行功率分配。仿真结果表明,所提出的方法相比统计质量Qo S保证的资源分配方案以及OFDM中继系统异构服务的资源分配算法,在提高网络覆盖率和容量上表现出更好的效果。In order to improve network coverage and network capacity OFDM cooperative communication systems, a OFDM system that based on subcarrier select pairing and optimal power allocation is proposed. Performed on OFDM relay system model and per-formance analysis of non- matching pair of relay, using the sub- carrier selection paired converted to an integer programming prob-lem, and is calculated using a matrix- based planning approach paired Hungarian algorithm. Then, according to the power allocation problem OFDM systems optimized KKT conditions under relay power and power allocation method. The final simulation results show that the proposed method is compared to the Qo S statistical quality assurance program resource allocation and resource allocation al-gorithm OFDM relay system of heterogeneous services, improve network coverage and capacity on show better results.

关 键 词：中继OFDM系统 子载波选择配对 功率优化分配 网络覆盖率 网络容量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]