Local optimality and initialization dependence disadvantages of K-means are analyzed and a PSO-based K-means algorithm is proposed.

针对K均值聚类算法依赖于初始值的选择，且容易收敛于局部极值的缺点，提出一种基于粒群优化的K均值算法。

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For theis system, a simplified LDPC coded modulation decoding initialization algorithm is proposed.

针对此系统，提出了简化的LDPC码编码调制译码初始化算法。

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