| 卫星通信中波束分集及联合TPC编码性能研究 |
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| 引用本文： | 郝谢东,刘爱军,张邦宁.卫星通信中波束分集及联合TPC编码性能研究[J].军事通信技术,2008(3). |
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| 作者姓名： | 郝谢东 刘爱军 张邦宁 |
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| 作者单位： | 解放军理工大学通信工程学院研究生4队;解放军理工大学通信工程学院卫星通信系;解放军理工大学通信工程学院训练部; |
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| 摘 要： | 分析研究卫星移动通信系统中上行链路波束分集接收的可行性和性能及联合TPC编码性能。分析了波束交叠、波束增益对多波束卫星通信系统的性能影响,建立了用于多波束分集处理的系统模型;引用基于MGF函数的性能分析方法,针对波束分集的研究,得到了Nakagami-m衰落信道条件下的多波束相干最大比合并(MRC)性能;利用计算机仿真验证算法的有效性,并进一步分析了联合Turbo乘积码(TPC)编码的性能。通过研究表明,在多波束卫星通信中采用分集接收处理不仅完全可行,而且可以有效提高上行链路的性能,降低地面终端的发送功率,解决上行链路发送能力不足的问题,联合TPC编码可以获得进一步的性能增益。
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| 关 键 词： | 卫星通信 波束分集 最大比合并 等增益合并 |
Beam Diversity Technique in Satellite Communication |
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| HAO Xie-dong,LIU Ai-jun,ZHANG Bang-ning.Beam Diversity Technique in Satellite Communication[J].Journal of Military Communications Technology,2008(3). |
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| Authors: | HAO Xie-dong LIU Ai-jun ZHANG Bang-ning |
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| Institution: | HAO Xie-dong1,LIU Ai-jun2,ZHANG Bang-ning3(1.Postgraduate Team 4 ICE,PLAUST,Nanjing 210007,China,2.Department of Satellite Communication ICE,3.Training , Academics Department ICE,PLAUST) |
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| Abstract: | Feasibility and performance of beam diversity of the satellite communication were investigated.After analyzing the effect of beam overlap and beam gain,a system model was built for the research of the satellite beam diversity reception.Using the MGF-based approach,the theoretical performance of beams diversity with MRC in Nakagami-m fading channels was re-derived.Simulation results show that beam diversity reception technique is absolutely feasible and can effectively improve the uplink performance of GEO s... |
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| Keywords: | satellite communication beam diversity Maximal Ratio Combining(MRC) Equal Gain Combining(EGC) |
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