标题： 功率最小化与不确定信道增益下的异构网络资源分配 显示英文标题

标题： Power minimization and resource allocation in HetNets with uncertain channel-gains

摘要： 我们提出一个优化问题，以最小化OFDMA异构网络中基站的传输功率，同时满足用户的个体吞吐量需求。 决策变量是用户的工作带宽、其关联情况以及基站的传输功率。 为处理无线信道的不确定性，信道增益被视为服从对数正态分布的随机变量，从而导致一个非凸的概率约束混合整数优化问题，然后将其公式化为一个混合整数鲁棒几何规划问题。 所提出方法的有效性在欧洲一个大城市的实际场景中得到展示。 显示英文摘要

摘要： We propose an optimization problem to minimize the base stations transmission powers in OFDMA heterogeneous networks, while respecting users' individual throughput demands. The decision variables are the users' working bandwidths, their association, and the base stations transmission powers. To deal with wireless channel uncertainty, the channel gains are treated as random variables respecting a log-normal distribution, leading to a non-convex chance constrained mixed-integer optimization problem, which is then formulated as a mixed-integer Robust Geometric Program. The efficacy of the proposed method is shown in a real-world scenario of a large European city.