变换域通信系统自适应N-sigma幅度谱成型算法

doi:10.11772/j.issn.1001-9081.2016.06.1492

计算机应用 ›› 2016, Vol. 36 ›› Issue (6): 1492-1495.DOI: 10.11772/j.issn.1001-9081.2016.06.1492

变换域通信系统自适应N-sigma幅度谱成型算法

刘立¹, 张衡阳¹, 毛玉泉¹, 孙乐¹, 马丽华²

1. 空军工程大学信息与导航学院, 西安 710077;
2. 空军第一通信团, 北京 100076

收稿日期:2015-11-27 修回日期:2016-01-13 出版日期:2016-06-10 发布日期:2016-06-08
通讯作者: 刘立
作者简介:刘立(1990-),男,陕西华县人,硕士研究生,主要研究方向:变换域通信系统;张衡阳(1978-),男,湖南祁东人,副教授,博士,主要研究方向:航空自组网、数据链;毛玉泉(1957-),男,河南郑州人,教授,硕士,主要研究方向:航空数据链;孙乐(1991-),男,陕西澄城人,硕士研究生,主要研究方向:变换域通信系统;马丽华(1981-),女,山东海阳人,工程师,硕士,主要研究方向:计算机网络、数据库。
基金资助:
国家自然科学基金资助项目(61202490);航空科学基金项目资助项目(20150896010)。

Adaptive N-sigma amplitude spectrum shaping algorithm in transform domain communication system

LIU Li¹, ZHANG Hengyang¹, MAO Yuquan¹, SUN Le¹, MA Lihua²

1. Information and Navigation College, Air Force Engineering University, Xi'an Shaanxi, 710077, China;
2. Air Force First Communication Group, Beijing 100076, China

Received:2015-11-27 Revised:2016-01-13 Online:2016-06-10 Published:2016-06-08
Supported by:
This work is partially supported by the National Natural Science Foundation of China (61202490), the Aeronautical Science Foundation of China (20150896010).

摘要/Abstract

摘要： 针对变换域通信系统传统硬门限判决算法漏检和误检的问题,为提高系统的抗干扰性能,提出一种自适应N-sigma幅度谱成型算法。该算法通过频谱感知获得环境功率谱的幅值信息,计算环境功率谱的均值和标准差;根据正态分布相关理论,自适应设置门限。若电磁环境发生变化,均值和标准差会重新调整更新门限。仿真结果表明,相比传统的硬门限判决算法,自适应N-sigma幅度谱成型算法的门限设置更加灵活精确,降低了干扰的漏检概率和误检概率,提高了系统的抗干扰性能。

关键词: 变换域通信系统, 门限设置, 抗干扰, N-sigma

Abstract: In order to reduce the relatively high probability of missed and false detection in traditional hard threshold setting algorithm, improve the anti-interference performance of Transform Domain Communication System (TDCS), an adaptive N-sigma amplitude spectrum shaping algorithm was proposed. The amplitude information of environment power spectrum was got according to spectrum sensing, the mean and standard deviation of the environment power spectrum were calculated. According to the correlation theory of normal distribution, the threshold was adaptively set. Therefore, when the electromagnetic environment changed, the mean and standard deviation would be readjusted and the threshold would be updated. The simulation results show that, compared to the traditional hard threshold setting algorithm, the threshold setting of the adaptive N-sigma amplitude spectrum shaping algorithm is more flexible and accurate, which can reduce the missed detection probability and false detection probability of interference and improve the overall anti-interference performance of the system.

Key words: Transform Domain Communication System (TDCS), threshold setting, anti-interference, N-sigma

中图分类号:

TN92

刘立, 张衡阳, 毛玉泉, 孙乐, 马丽华. 变换域通信系统自适应N-sigma幅度谱成型算法[J]. 计算机应用, 2016, 36(6): 1492-1495.

LIU Li, ZHANG Hengyang, MAO Yuquan, SUN Le, MA Lihua. Adaptive N-sigma amplitude spectrum shaping algorithm in transform domain communication system[J]. Journal of Computer Applications, 2016, 36(6): 1492-1495.

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变换域通信系统自适应N-sigma幅度谱成型算法

Adaptive N-sigma amplitude spectrum shaping algorithm in transform domain communication system

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