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Variable modulus mechanism for performing equalization without a priori knowledge of modulation type or constellation order

机译:无需进行调制类型或星座图先验知识即可执行均衡的可变模量机制

摘要

A system, method and memory medium for performing blind equalization. A block {un} of the baseband samples is received. A function J of a vector f is minimized to determine a minimizer fMIN. The function J depends on vector f according to J(f)=Σ(|yn|2−γ)2. The summation Σ corresponds to a sequence {yn} of equalized samples. The sequence {yn} of equalized samples is related to the block {un} according to a convolution relation {yn}={un}*f. Parameter γ is a current modulus value. The current modulus value γ is updated to equal a ratio of a fourth moment of the sequence {yn} to a second moment of the sequence {yn}. The minimization and parameter update operations are repeated for a series of received blocks of baseband samples. The minimizer fMIN from a last of the repetitions is used to determine final equalized samples.
机译:用于执行盲均衡的系统,方法和存储介质。接收基带样本的块{u n }。向量f的函数J被最小化,以确定最小化函数f MIN 。函数J根据J(f)=Σ(| y n | 2 -γ) 2 依赖于向量f。求和∑对应于均衡样本的序列{y n }。根据卷积关系{y n } = {,均衡样本的序列{y n }与块{u n }相关u n } * f。参数γ是电流模量值。当前模量值γ被更新为等于序列{y n }的第四矩与序列{y n }的第二矩的比率。对一系列接收到的基带样本块重复最小化和参数更新操作。最后一次重复的最小化器f MIN 用于确定最终的均衡样本。

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