In this paper , a survey of software radio conception and characteristics of all digital receiver is presented first . then a variety of key technologies of all digital receiver , especially carrier synchronization are discussed in detail and the corresponding simulation results are also given 论文首先叙述了软件无线电的概念和全数字接收机的特点，然后对全数字接收机中的关键性技术，特别是载波同步的估计和恢复算法进行了详细讨论，并且给出了相应的仿真结果。
Then time domain synchronization including symbol , frequency and carrier synchronization algorithms is discussed according to the characteristics of frame structure in merged scheme . at the same time , pointed out its merit that high rate of spectrum utilized and rapid synchronization retrieved . and simulation and much improvement are done to realize the algorithms in project 然后根据融合方案的帧结构的特点,分析和探讨了时域同步算法,包括符号同步、载波频率同步和采样同步算法原理,指出时域同步有频谱利用率高,同步恢复快等优点,并对其进行了工程可实现的改进和仿真。
In chapter 3 , a carrier synchronization method is put forward , parameters and design of each part of the afc loop are described in detail , at the same time the carrier synchronization unit has been simulated using matlab language and its performance analyzed . simulation results show it efficient 第三章基于综合抗干扰数据传输系统中扩频同步、自适应阵收敛和载波同步的关系,提出一种适合系统并利于fpga实现的载波同步方法,详细阐述了自动频率控制( afc )环路主要部件的参数及电路设计,并对载波同步单元进行了matlab仿真和同步性能分析。
It first introduces the mpeg - 2 standard and the grammar structure of the ts . then it describes the principle of synchronization and multiplexing in digital communication . the synchronization comprises the carrier synchronization , bit synchronization , group synchronization and network synchronization while the multiplexing includes bit multiplexing , word multiplexing and frame multiplexing 本文首先介绍了mpeg _ 2标准及其mpeg _ 2传输流语法结构，接着阐述了数字通信中的同步和复接理论，同步包括载波同步、位同步、群同步和网同步，复接包括按位复接、按字复接、按帧复接。
