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首页> 外文期刊>Circuits and Systems I: Regular Papers, IEEE Transactions on >Type-Based Group Delay Equalization Technique
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Type-Based Group Delay Equalization Technique

机译：基于类型的群时延均衡技术

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This paper presents a patented type-based group- delay equalization technique to compensate for in-band group- delay distortion typically existing in analog/RF filter circuits. The underlining principle is that for a given modulation scheme and pulse-shaping function, the modulated signal has a unique statistical distribution, and that when the modulated signal passes through a circuit, any in-band group-delay distortion in the circuit distorts its output statistical distribution. The technique employs an equalization filter to minimize the in-band group-delay distortion, with the filter coefficients derived from a measure of the distortion in the output statistical distribution using a weighted nonlinear least square algorithm. It requires simple analog and digital hardware and firmware to implement, and its implementation is inherently adaptive, capable of tracking and compensating for any variation in the group-delay distortion characteristic due to component aging and temperature variation. Computer simulations have been performed to show that an accurate equalization filter can be obtained to effectively compensate for the group-delay distortion, achieving significant performance improvements.
机译：本文提出了一种获得专利的基于类型的群时延均衡技术，以补偿模拟/ RF滤波器电路中通常存在的带内群时延失真。强调原则是，对于给定的调制方案和脉冲整形功能，调制信号具有唯一的统计分布，并且当调制信号通过电路时，电路中的任何带内群时延失真都会使其输出失真。统计分布。该技术采用均衡滤波器来最小化带内组延迟失真，其中滤波器系数是使用加权非线性最小二乘算法从输出统计分布中的失真度量得出的。它需要简单的模拟和数字硬件和固件来实施，并且其实施具有固有的适应性，能够跟踪和补偿由于组件老化和温度变化而引起的群延迟失真特性的任何变化。已经进行了计算机仿真，以表明可以获取精确的均衡滤波器来有效补偿群延迟失真，从而显着提高性能。

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