电力线通信中动态子载波组分配

针对电力线通信自适应OFDM系统的限制条件,探讨在每OFDM符号内各RT用户要求的约束下,研究系统总功率地窖注水分配后多子载波上的速率自适应子载波分配模型,提出一种新的动态子载波组分配算法。在典型电力线信道环境下对其仿真,并与另外两种分配算法进行比较,结果表明,本文动态子载波组分配算法的复杂度大大减小,能满足多用户资源分配的多目标要求。

Subcarrier-group dynamic allocation based on analytic hierarchy process for power-line communication systems

An adaptive subcarrier allocation model for adaptive multiuser orthogonal frequency division multiplex (OFDM)powerline communication systems is researched after allocation 0f the system's total power by cellar water-filling under the restrictions for each subcarrier in each OFDM symb01.A new subcarrier-group dynamic allocation algorithm was proposed.In typical power-line channel scenarios.the proposed algoritllm was compared to the subcartier-group allocation algorithm with only one subcarrier in tlle group and to the subcarrier by subcarrier allocation algorithm without determinist's preferential information.Form the simulation results,it shows that the erformance 0f the proposed subcartier-group dynamic allocation algorithm i8 better.So the proposed algofitllm Can satiafy the dynamic multi-0bjective requirements 0f multiuser resource allocation.