存在干扰的星地混合协作传输性能分析

doi:10.3969/j.issn.0372-2112.2018.01.002

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电子学报 ›› 2018, Vol. 46 ›› Issue (1) : 8-14. DOI: 10.3969/j.issn.0372-2112.2018.01.002

学术论文

存在干扰的星地混合协作传输性能分析

林敏¹, 姜杨威², 欧阳键³, 安康²

作者信息 +

The Performance of a Hybrid Satellite-Terrestrial Cooperative Networks with Interferences

LIN Min¹, JIANG Yang-wei², OUYANG Jian³, AN Kang²

Author information +

文章历史 +

摘要

分析了地面多个中继节点采用放大转发协议辅助卫星通信构成的星地混合协作网存在同信道干扰时的性能.首先在用户端采用最大比合并方案并受到同信道干扰的情况下，得到其输出信干噪比的表达式.其次针对卫星链路服从阴影莱斯分布和地面链路服从瑞利分布的情况，推导出输出信干噪比的矩母函数，并进一步得到系统平均误符号率的解析表达式.接着，推导出高信噪比条件下系统平均误符号率的近似表达，为估算系统的性能提供了更加快速的方法.最后，计算机仿真验证了理论计算公式的准确性，并分析了信道参数、中继数目和调制方式对星地混合协作传输的影响.

Abstract

This paper makes an investigation of the performance of a hybrid satellite-terrestrial cooperative network (HSTCN). In this system, some terrestrial amplify-and-forward (AF) relays with fixed-gain are employed to assist the signal transmission from a satellite to a destination which is corrupted by multiple co-channel interferences (CCIs), and the satellite links experience Shadowing-Rician fading while the terrestrial links undergo Rayleigh fading. Then, by assuming that maximum ratio combining (MRC) is used at the destination, the output signal-to-interference-plus-noise ratio (SINR) is obtained. Afterwards, we derive the moment generating function (MGF) of the destination and then present the analytical average symbol error rate (ASER) expression for the considered cooperative system. In addition, to obtain further insights, we also develop the asymptotic ASER analysis on the diversity order and array gain. Finally, numerical results are obtained with the help of computer, which demonstrates the validity of the performance analysis and the impacts of shadowing parameters, relay number and CCIs on the considered HSTCN.

导出引用

林敏, 姜杨威, 欧阳键, 安康. 存在干扰的星地混合协作传输性能分析[J]. 电子学报, 2018, 46(1): 8-14. https://doi.org/10.3969/j.issn.0372-2112.2018.01.002

LIN Min, JIANG Yang-wei, OUYANG Jian, AN Kang. The Performance of a Hybrid Satellite-Terrestrial Cooperative Networks with Interferences[J]. Acta Electronica Sinica, 2018, 46(1): 8-14. https://doi.org/10.3969/j.issn.0372-2112.2018.01.002

中图分类号： TN92

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