摘要
文章在介绍ＤＶＢ接收系统基本结构的基础上，分析了ＤＶＢ－Ｓ标准下数字卫星接收机中可变码率的ＱＰＳＫ解调和ＦＥＣ方式的差错控制技术。并结合自行开发的ＤＶＢ数字卫星接收机对包含解调与ＦＥＣ功能的两种集成电路芯片作了比较介绍。
Based on a brief discussion of the basic structure of the DVB receiver,this paper analyses the variable rate QPSK demodulation and FEC error correction in the digital satellite receiver and compares two types of integrated circuit chips in the DVB receiver made by the writer′s unit.
