A NOVEL MODEL OF DSP FOR LINE ENHANCER

An innovative adaptive line enhancer (ALE) structure is presented in this work. The adaptive filter's auto regressive-moving average (ARMA) structure is based on traditional Laguerre orthogonal func­tions. The orthogonal set's poles' frequencies and radii allow for tuning. Higher-order statistics are used to tune these terms in this contribution. Fourth-order cumulants' qualities are used to help with harmonic retrieval of the sinusoids embedded in the input signal. Since the feed-forward filter parameters are linearly connected to the filter output, further adaption of them is simple. Stability, brevity, and robustness in the presence of noise are expected benefits. Results from simulations are presented to demonstrate typical performance.

本研究提出了一种创新的自适应线路增强器（ALE）结构。自适应滤波器的自回归移动平均（ARMA）结构基于传统的拉格朗日正交函数。正交集合的极点频率和半径允许进行调节。本文贡献中，采用高阶统计量来调节这些参数。利用四阶累积量特性有助于从输入信号中提取的正弦波的谐波恢复。由于前馈滤波器参数与滤波器输出线性连接，因此对这些参数的进一步自适应调节变得简单。预期在噪声存在的情况下，将获得稳定性、简洁性和鲁棒性的优势。通过仿真结果展示了典型的性能表现。