| Link22数据链调制方式性能分析 |
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| 引用本文： | 尹亚兰,邓捷坤. Link22数据链调制方式性能分析[J]. 电子工程师, 2009, 35(1): 26-28 |
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| 作者姓名： | 尹亚兰 邓捷坤 |
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| 作者单位： | 海军指挥学院,江苏省,南京市,210029 |
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| 摘 要： | Link22工作频段的频率资源是有限的，为了提高信息速率，Link22使用了环形星座的QAM（正交调幅）及8PSK的调制方式。在加性高斯白噪声环境下，8PSK调制方式的误符号率计算方法已相当成熟，而环形星座的QAM调制方式的误符号率只有边界较为松疏的计算公式。文中采取将QAM环形星座上的星座点分解成两个相互正交的非均匀的PAM（脉冲振幅调制）信号的方法，计算出Link22在加性高斯白噪声环境下的16QAM环形星座误符号率。计算结果与相关资料相比具有很好的一致性，表明此分析方法是正确可行的。此方法也适于Link22的32QAM及64QAM的调制方式。
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| 关 键 词： | Link22 数据链 QAM 误符号率 |
Performance Analysis of Modulation Mode of Link22 |
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| YIN Yalan,DENG Jiekun. Performance Analysis of Modulation Mode of Link22[J]. Electronic Engineer, 2009, 35(1): 26-28 |
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| Authors: | YIN Yalan DENG Jiekun |
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| Affiliation: | Navy Command College;Nanjing 210029;China |
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| Abstract: | Frequency resource of Link22 is limited.To achieve higher data rate,the modulation system of QAM constellations in annular and 8PSK are used in Link22.The method of calculating the BER of the 8PSK modulation system in AWGN environment is well known,but the calculated result of the BER of QAM constellations in annular is rather sparse with the present formula.This paper calculated the BER of 16QAM constellation in annular.Every spot in 16QAM constellation decomposed into two non-uniform PAM signals which are... |
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| Keywords: | LinK22 QAM |
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