基于干扰控制的多小区分布式波束成形

在多小区干扰信道中,基于分布式竞争设计,提出一种优化基站发射波束成形矩阵的设计,使每个小区的最差信干噪比最大.在竞争设计中加入干扰控制,利用差异化的干扰系数,抑制小区间的干扰,提高系统性能.这种设计,既能保持算法的分布式特性,又能有效地提高用户信干噪比.仿真分析表明,基于干扰控制的设计性能更接近协同设计的性能.

Improved distributed beamforming design in multicell downlinks using interference control

In the multicell downlinks where frequency is fully shared with each cell, we proposed an improved beamforming vector design based on distributed competitive design. The worst signal-to-interference-plus-noise ratio in each cell is maximized subject to the power constraint of each base station. In the improved competitive design, interference control is considered and different interference coefficients are used to suppress inter-cell interference and improve the system performance. The interference control based competitive design can be implemented in a distributed manner. The simulation results show that the performance of the proposed design is close to the coordinated design.