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中文摘要：
干扰是无线通信网中亟待解决的问题之一,针对多用户MIMO系统,结合最新的分布式算法,总结并比较了几种分布式迭代算法的复杂度以及能够实现的最大系统自由度。不同于两用户的MIMO X信道可以直接得到干扰对齐预编码矩阵,利用了信道互易性的分布式迭代算法能够很好地解决由于用户数和约束条件的增加造成干扰对齐预编码矩阵可能无解的问题。最后仿真验证了分布式迭代算法的有效性。
英文摘要：
Interference is one of the problems to be solved in the wireless communication network. In view of the multi-user MIMO system, this paper combines with the latest distributed algorithm, summarizes and compares the complexity and the degree of freedom of several distributed iterative algorithm. Different from two users of the MIMO channel X precoding matrix that can be directly designed by interference alignment, the distributed iterative algorithm using channel reciprocity can overcome the problem that the interference alignment precoding matrix may have no solution due to the increase of users and the constraints. Finally, the simulation verified the effectiveness of the distributed iterative algorithm.
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