| 摘要: |
| 首先简要介绍了卫星通信中扩频系统的基本模型和表达式，给出了系统在失真信道中进行计算机仿真的基本模型。然后，利用通信系统仿真软件包ACOLADE，建立了扩频系统在群时延失真信道中的仿真模型，建立了群时延失真信道模型，进行了QPSK、QPSK＋DS、QPSK＋FH等体制在群时延失真信道的特性仿_真分析，最后得出了一些有一定参考价值的分析结果。 |
| 关键词: 卫星通信 扩频 群时延失真 仿真 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:October 11, 2005Revised:March 06, 2006 |
| 基金项目: |
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| Simulation and Analysis of the Influence of Group Delay on the Performance of a Spread Spectrum Communication System |
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| Abstract: |
| The basic concept and expressions for a spread spectrum satellite communication system are introduced, and its diagrams for simulation in distortion channel are given. some models for simulation in ACOLADE software are established, including group delay channel and spread spectrum satellite communication system, etc. Some systems, such as QPSK, QPSK DS, QPSK FH, are simulated in group delay channel. Finally, Some useful results are achieved. |
| Key words: satellite communication spread spectrum group delay distortion simulation |
