两层Femtocell网络中非理想CSI下的最优鲁棒功率控制方法

Optimal robust power control method under non-ideal CSI in two-layer Femtocell network

Abstract

本发明请求保护一种两层Femtocell网络中非理想CSI下的最优鲁棒功率控制方法,该方法考虑到信道估计误差和满足宏蜂窝用户的干扰约束条件下,通过控制Femtocell用户的发射功率,最大化Femtocell用户的总吞吐量。为了严格保护宏蜂窝用户的干扰约束条件,该方法基于鲁棒优化和最坏准则机制的思想,将无限约束的Max‑Min优化问题转化为有限约束的凸优化问题。通过凸优化问题的最优性条件,给出了Femtocell用户的最优鲁棒功率的闭式解。本发明具有计算复杂度低,可严格保证宏蜂窝用户QoS,提高Femtocell用户吞吐量的优点,特别适合非理想CSI下的两层Femtocell网络。
The invention requests to protect an optimal robust power control method under non-ideal CSI in a two-layer Femtocell network. Under the condition that the channel estimation error is considered and the interference constraints of macro cellular users are satisfied, the total throughput of Femtocell users is maximized by controlling the transmitting power of the Femtocell users. In order to strictly protect the interference constraints of macro cellular users, a Max-Min optimization problem with unlimited constraints is converted into a convex optimization problem with limited constraints based on the idea of robust optimization and a worst criterion mechanism. Based on the optimality conditions of the convex optimization problem, a closed solution of the optimal robust power of Femtocell users is given. The method has the advantage that the method is of low computing complexity and can strictly guarantee the QoS of macro cellular users and improve the throughput of Femtocell users, and is particularly suitable for a two-layer Femtocell network under non-ideal CSI.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle