基于带宽模型的绿信比优化研究

Split Optimization Based on Bandwidth Model

在基于带宽模型下建立通过带宽度关于绿信比的目标函数和约束条件及二层优化路径 ,通过计算来确定第 1层每一步优化对象、范围和优化步长。当某一步的优化步长不满足约束条件时 ,保持原有约束条件和最后一步的优化范围 ,将步长降至 1 s进入第 2层优化获得最优设计方案。模型的特点是每一步纳入优化范围的多个交叉口使用同一步长 ,一次完成增加全系统带宽的优化。

This paper builds the objective function of bandwidth about split, the restricti on condition and the two-level optimized path based on bandwidth model, and de cides optimized object, scope and step length of each step in the first level. W hen step length does not satisfy the restriction condition, the original restric tion condition and the optimized scope are kept, and then the step length is min imized to 1s to enter the second level optimization to get the optimized design plan. The character of the model is to make multi-intersections, which are kept into the optimized scope in each step, use the same step length, thus finishing adding bandwidth optimization one time.