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中文摘要：
针对LTE通信系统中小区间干扰,给出多点协作情况下基于预编码矩阵索引反馈（PMI）的小区间干扰弱化方案。干扰弱化方案采用基于码本的预编码技术,接收机选用最小均方差（MMSE）设计,干扰小区间采用轮询调度算法。仿真结果表明,引入PMI反馈协调方案后,多点协作系统中每个用户的平均频谱利用率明显提高,小区间干扰得到有效的抑制。
英文摘要：
Aiming at inter-cell interference in LTE communication system,a scheme of inter-cell interference mitigation based on precoding matrix index（ PMI） under the condition of multi-cell coordination is proposed. The precoding technique based on codebook is used in the scheme,minimal mean-squared error（ MMSE） algorithm is adopted in receiver＇s design,and the round robin scheduling method is used in the inter-cell of interference. Simulation results show that each user＇s average spectrum utilisation improves apparently after the PMI feedback coordination scheme is imported,and the inter-cell interference have been suppressed effectively.
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