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一、自动均衡技术的发展在数据通信发展的基础上,自六十年代中期以来,发表了很多关于自动波形均衡研究成果的报告,诸如均衡器的简化和数字化,收敛高速化的算法,训练信号的要求以及与每种调制方式有关的问题等。迄今为止,日本也以数据传输及PCM-FDM方式的实用化为目标提出了多种方案,并进行了模拟与试制工作(参见表1)。但是,这些研究工作的大部分都是根据Lucky等人开始提出的理论,在横向滤波器上附加自动均衡功能,所以并没有产生划时代的进步。有关原理问题己在其他几篇文章中做了介绍,本文主要介绍后来的进展改良情况,以及将来的发展动向。
I. Development of Automatic Equalization Technology Based on the development of data communications, many reports on the research achievements of automatic waveform equalization have been published since the mid-1960s, such as the simplification and digitization of equalizers, the algorithm of convergence and speeding up, the training signals The requirements and the problems associated with each modulation method. To date, Japan has also proposed various proposals aimed at the practical application of data transmission and PCM-FDM and conducted simulation and trial production (see Table 1). However, much of the work in these studies, based on the theory that Lucky et al. First proposed, adds automatic equalization to the transversal filter, so there has been no epoch-making improvement. The principle of the problem has been introduced in several other articles, this article describes the progress of the subsequent improvement, as well as future developments.