Bit synchronization circuit design for digital communication system 数字通信系统位同步电路设计
The field of video signal processing is now undergoing a digital reform . the digital processing technique is clearly expatiated in this paper , such as a / d convert , anti - alias filter , clamp control , gain control , pll , synchronization circuit , color decoder , comb filters 本文详细叙述了视频图像的数字处理方法,重点介绍了视频信号数字化技术、抗混叠滤波器、箝位、增益控制、锁相技术、同步时钟产生、电视信号亮色分离、彩色解码等技术,这些关键技术为视频信号的数字化处理提供了重要的基础。
Then , introducing something about spread spectrum technique . and deciding to select direct - sequence spread spectrum ( ds ) in underwater acoustic communications by comparing ds to fh according to the properties of underwater acoustic channels . after that , discussing something about rake receiver , simulating the path - search algorithms , synchronization circuits and rake receiver in low speed underwater acoustic communications and analyzing some major factors influencing the performance of systems 然后介绍了rake接收技术的基本原理,并对rake接收系统中的路径搜索和同步系统进行了讨论和仿真分析,另外还对rake接收技术在低速水声通信系统中的应用作了仿真分析,并讨论了一些影响rake接收系统性能的主要因素。