【摘要】 在多小区干扰信道中,基于分布式竞争设计,提出两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.一种是基于干扰控制的设计,利用差异化的干扰系数,抑制小区间的干扰,提高系统性能.另一种是基于功率控制的设计,通过调整各基站的发射功率,提高系统性能.这两种设计,都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,基于功率控制的设计在功率大的情况下,性能优于基于干扰控制的设计.更多还原

【Abstract】 In a multicell scenario,tw o improved competitive beamforming design schemes are proposed to maximize the w orst SINR in each cell for dow nlink transmissions. One is the competitive design w ith interference control. We use different interference control factors to suppress the inter-cell interference. The other design is the competitive design w ith pow-er control. We adjust the pow er of each base station( BS) to improve the system performance. Both the tw o improved designs keep the distributive nature of the competitive design and improve the w orst SINR of the system. Simulation results show that the competitive design w ith pow er control outperforms that w ith the interference control w hen the transmit pow er increases.更多还原