| Ku频段USAT“动中通”系统设计探讨 |
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| 引用本文： | 肖永伟.Ku频段USAT“动中通”系统设计探讨[J].无线电通信技术,2011,37(2):4-6,38. |
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| 作者姓名： | 肖永伟 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北石家庄,050081 |
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| 摘 要： | 由于超小口径终端(USAT)卫星通信系统采用小口径天线工作,其在多址接入设计和接入控制设计上与甚小口径终端(VSAT)系统区别较大。结合规范对功率谱密度的强制性要求,对USAT系统上行链路计算分析,给出链路容量与需要的最小信噪比的关系以及采用扩频多址接入建议;为提高系统资源利用率,提出USAT系统上下行链路频率复用的异步载波成对抵消技术的设计思路,并针对阻塞环境条件下,分析了采用本地控制突发和快速捕获技术远端站的反向链路传输性能。
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| 关 键 词： | USAT 功率谱密度 SSMA A-PCMA |
Discussion on Design of Ku-band USAT On-the-move System |
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| XIAO Yong-wei.Discussion on Design of Ku-band USAT On-the-move System[J].Radio Communications Technology,2011,37(2):4-6,38. |
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| Authors: | XIAO Yong-wei |
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| Institution: | XIAO Yong-wei (The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | By reason of ultra small aperture antenna,USAT system is much different from VAST system in multiple access and access control scheme design.According to FCC regulatory requirements,the relationship that relates uplink capacity to minimum required Eb/N0 is achieved via the link budget.It was shown that spread spectrum access is necessary.This paper proposes design idea of the asymmetric PCMA frequency reuse scheme for more efficient use of the transponder.Based on locallycontrolled burst transmission scheme... |
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| Keywords: | ultra small aperture terminal EIRP density spread spectrum multiple access asymmetric paired carrier multiple access |
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