在宽带电力线正交频分复用系统通信容量资源不足、实时业务要求固定速率/比特和非实时业务要求最小速率/比特、总功率受限子载波等功率的约束下,建立满足实时业务稳定性和非实时业务公平性的多目标优化跨层资源分配模型,提出混合业务公平性与速率自适应相结合的跨层资源分配算法。在典型电力线信道环境下进行仿真和分析,结果表明提出算法性能优于对比算法且更满足多用户混合业务电力线通信资源分配的多目标优化要求。 Under the constraints of insufficient communication capacity resources of broadband power line orthogonal frequency division multiplexing system, real-time service requirements of fixed rate / bit and non-real-time service required minimum rate / bit, total power limited subcarriers and other power constraints, real-time service stability And multi-objective optimization cross-layer resource allocation model for non-real-time business fairness, a cross-layer resource allocation algorithm combining fairness of service mix and rate adaptation is proposed. The simulation and analysis under the typical power line channel environment show that the proposed algorithm outperforms the comparison algorithm and meets the multi-objective optimization requirements of power line communication resource allocation for multi-user hybrid services.