| 数字卫星电视接收系统及其性能分析 |
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| 作者姓名： | 王毅 马伊民 |
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| 作者单位： | 西安空间无线电技术研究所,西安710000 |
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| 摘 要： | 文章简要介绍了数字卫星电视接收系统的组成，并从数字卫星电视接收机的R—S解码器、卷积解码器和QPSK解调器等部分电路对系统抗噪声性能的贡献做了分析，同时对由于整个数字卫星电视系统链路非理想性因素而引入的干扰噪声导致的接收系统性能恶化情况进行了简要分析。通过论述，可有助于数字卫星电视广播系统的设计、使用和维护。
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| 关 键 词： | 数字卫星电视 QPSK调制解调 信道解码 误码率 干扰 |
Performance Analysis of Digital Satellite TV Receiver System |
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| Authors: | Wang Yi Ma Yimin |
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| Institution: | Wang Yi Ma Yimin ( Xi＇an Institute of Space Radio Technology, Xi＇an 710000, China) |
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| Abstract: | In this paper,the composing of digital satellite TV receiver system is introduced simply.And support to anti-noise performance from R-S decoder,convolutional decoder,QPSK demodulator of digital satellite TV receiver is analyzed.At the same time,this paper analyses the labefaction of system performance for the interference and noise which were conduced for the nonideal factor from digital satellite TV system.This discussion help to design,use and stick up for the digital satellite TV broadcasting system. |
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| Keywords: | Digital satellite TV QPSK modulator and demodulator Channel decoding Error rate Interference |
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