一种多区协同的区间干扰抑制方法
在LTE-Advanced系统中，小区频率复用因子为1，从而区间干扰会严重影响小区边缘用户接收性能。为减少数据交换量，提出一种基于用户划分的干扰抑制方法。首先根据用户接收功率估计，判断相邻小区内是否存在边缘用户，存在时，通过多区协同实现对该边缘用户的干扰抑制，而不存在时，则采取单小区多用户干扰抑制方法，与传统方法相比，该方法无需所有相邻小区用户的信道状态信息，从而大大减少了在基站间的数据交换量。文章介绍了该方法实现步骤，分析了实现复杂度，并通过对用户误码率仿真证明了算法性能。...
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| Published in | 电子技术应用 Vol. 38; no. 3; pp. 110 - 112 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
重庆大学通信工程学院,重庆,400030
2012
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| Subjects | |
| Online Access | Get full text |
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| Summary: | 在LTE-Advanced系统中，小区频率复用因子为1，从而区间干扰会严重影响小区边缘用户接收性能。为减少数据交换量，提出一种基于用户划分的干扰抑制方法。首先根据用户接收功率估计，判断相邻小区内是否存在边缘用户，存在时，通过多区协同实现对该边缘用户的干扰抑制，而不存在时，则采取单小区多用户干扰抑制方法，与传统方法相比，该方法无需所有相邻小区用户的信道状态信息，从而大大减少了在基站间的数据交换量。文章介绍了该方法实现步骤，分析了实现复杂度，并通过对用户误码率仿真证明了算法性能。 |
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| Bibliography: | In the LTE-Advanced systems,the cell frequency reuse factor is 1, which will seriously affect the receive performance of cell edge users. In order to reduce the amount of data exchange,a new strategy was proposed that determines whether there exist cell edge users in its adjacent cells according to the estimated receiving power of the user.If there exist,the interference suppression can be realized through the multi-cell cooperation strategy.If not,then a single cell multi-user interference suppression method can be adopt. Compare with the traditional multi-cell cooperation method, the proposed approach only needs the CSI of the cell edge users when encoding in the base station,which greatly reduces the amount of data exchange between base stations. This paper introduces the steps of the method,then analyzes its complexity and proves the performance of the algorithm by the bit error rate. Zeng Hao, Yuan Angfei, Liu Ling （College of Communication Engineering,Chongqing University, Chongqing 400030, China） multipl |
| ISSN: | 0258-7998 |
| DOI: | 10.3969/j.issn.0258-7998.2012.03.036 |