提出了一种新的基于注水原理的低计算复杂度的快速功率和比特分配算法。在功率最小化问题上,通过对公式的变形和求解,使得问题的求解形式与注水算法一致。利用注水性质快速调整注水线从而移除了复杂的搜索注水线计算,实现了功率最小化快速功率和比特分配算法。仿真结果表明,与已有的算法相比,提出的算法节省了大量的计算时间。
Traditional Power Minimization problem need complicated calculation and is not applied in practice very well .To overcome this problem ,formulas are transformed and solved ,and the solution of Water-Filling can be applied ,take advantage of properties of Water-Filling ,agilely adjusting Water-Level instead of processing complex Water-Level searching process .Based on Water-Filling algorithm ,fast power and bit allocation algorithms in Power Minimization for multi-channel wireless communications are realized .Simulation results shows ,compared with existing algorithms ,proposed algorithms runs multiple times faster .