计算机应用 ›› 2012, Vol. 32 ›› Issue (08): 2137-2140.DOI: 10.3724/SP.J.1087.2012.02137

• 网络与通信 • 上一篇    下一篇

Ka频段移动卫星星地链路误码统计分析

潘成胜1,2,李花芳1,2,刘春玲1,2   

  1. 1. 大连大学 信息工程学院,辽宁 大连 116622
    2. 辽宁省高校通信与信息处理重点实验室(大连大学),辽宁 大连 116622
  • 收稿日期:2012-01-17 修回日期:2012-03-01 发布日期:2012-08-28 出版日期:2012-08-01
  • 通讯作者: 李花芳
  • 作者简介:潘成胜(1962-),男,江苏宜兴人,教授,博士生导师,博士,CCF会员,主要研究方向:卫星通信、计算机网络;
    李花芳(1987-),女,河南安阳人,硕士研究生,主要研究方向:卫星通信网络;
    刘春玲(1971-),女,辽宁营口人,副教授,博士,主要研究方向:信号处理、卫星通信网络。
  • 基金资助:
    国家863计划项目(2011AAXX04);辽宁省教育厅科研项目(L2011217)

Statistical analysis of bit error in Ka band mobile satellite channel

PAN Cheng-sheng1,2,LI Hua-fang1,2,LIU Chun-ling1,2   

  1. 1. Information and Engineering College, Dalian University, Dalian Liaoning 116622, China
    2. Key Laboratory of Communications and Information Processing of Liaoning Province (Dalian University), Dalian Liaoning 116622, China
  • Received:2012-01-17 Revised:2012-03-01 Online:2012-08-28 Published:2012-08-01
  • Contact: LI Hua-fang

摘要: 针对Ka频段移动卫星星地链路的特性,全面考虑天气和移动终端周边环境的影响,建立了Ka频段移动卫星星地信道模型。对二进制相移键控(BPSK)调制方式下的星地信道进行仿真和数字基带误码图案的统计分析,并采用最小二乘法对误码发生次数的概率进行了拟合。研究表明:信道误码发生次数服从泊松分布,在Ka频段移动卫星星地信道的数字基带模拟中,BPSK调制方式下的系统误码由突发误码和服从泊松分布的随机误码组成。

关键词: 卫星信道模型, 基带误码, 误码图案, 泊松分布, 突发误码

Abstract: In view of the characteristics of Ka-band mobile satellite channel, a model was built up with taking full consideration of the decline influenced by weather and surrounding environment in this paper. Then, the satellite channel with Bipolarity Phase Shift Keying (BPSK) modulation was simulated, and the probability model of baseband channel bit error distribution was established. Meanwhile, the probability of error occurrences was fitted by using the least-squares method. According to the results, the occurrence number of channel errors obeys Poisson distribution. Moreover, during the digital baseband simulation of Ka-band mobile satellite channels, it is found that the system error with BPSK modulation consists of the burst error and the random error that obeys the Poisson distribution.

Key words: satellite channel model, baseband bit error, error pattern, Possion distribution, burst error

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