数字锁相环综评

A survey and review of digital phase-locked loops

本文旨在对数字锁相环(DPLL'S)三十年来在理论和实验方面的发展,作一系统的综述和评论.文中系统地阐述了各种理论,指出了它们之间的关系,以及它们是在什么假设前题下建立的.各种理论有什么优缺点,顺便也指出了尚待解决的问题.这篇评论充分注意到由于微处理技术迅速的发展,对通讯和控制信号的各种算法已能在数字领域内方便地实现.因此,本文把重点放在介绍自适应数字锁相环上.最后,文中展望了DPLL的研究和发展的前景.

The purpose of this paper is to present a systematic survey and review of the theoretical and experimental work accomplished in the asea of digitat Phase-Lockcd Loops (DPLL'S) during the period of 1960 to 1990. This is a tutorial article revealing the various theories, their relationships to one another, their shortcomings, their advantages and the accumptions on which each is based.In this paper, A byprodnet of this presentation will be to point out unsolved problems of practical interest as well. This review is particularly motivated by the that microprocessor technology is advancing rapidly to the extent that sophisticated and flexible signal processing algorithms for communications and control can be realized in the digital domain. therefore, in this paper, we put stress on introducing self-adaptation DPLL'S Finally. the trends of researh and development of DPLL'S are expounded.