【摘要】 本文分析了电力线通信系统在每时隙内的最大总功率、各实时用户固定比特和非实时用户最小比特、各子载波允许最大功率和特定比特数的约束下,多用户多业务在多子载波上的自适应资源分配的多层多目标最优模型,并提出一种基于资源因子和用户优先级的功率和速率自适应相结合的资源分配算法。在典型电力线信道环境下其仿真结果表明,本文算法的性能优于已有的多用户资源分配算法且能满足多用户多业务电力线通信资源分配的多目标要求。更多还原

【Abstract】 The multi-layer multi-objective optimization model of adaptive resource allocation for multiuser multi-server power-line communication OFDM systems is analyzed with the restrictions of maximal total power, fixed bits for every real time(RT) user and minimal bits for every non-real time(NRT) user, maximal power and bits for every sub-carrier in each time slot.Based on the resource factor and user priority, a resource allocation algorithm with the combination of rate and power adaptation is proposed.The algorithm is tested in typical power-line channel environment and the simulation results indicate that it has better performances than some known multi-user resource allocation algorithms and it realizes better the multiple aims of multi-user multi-server resource allocation for power-line communication systems.更多还原