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在Ｈｉｌｌｂｅｒｔ空间中讨论了框架的一些重要的性质，定义了一个框架算子。给出了一种重建原信号的迭代算法，在文章的最后，用仿真验证了此算法的有效性。
Some important properties of the framework are discussed in Hillbert space, and a framework operator is defined. An iterative algorithm for reconstructing the original signal is given. At the end of the article, the simulation results show the effectiveness of the algorithm.