一种低复杂度的超高阶码索引调制方法

刘芳; 冯永新

doi:10.11999/JEIT200318

一种低复杂度的超高阶码索引调制方法

doi: 10.11999/JEIT200318

刘芳^1, ,,
冯永新²

1.
沈阳理工大学信息科学与工程学院沈阳 110159
2.
沈阳理工大学研究生院沈阳 110159

基金项目: 国家自然科学基金(61501309, 61971291)，辽宁省自然科学基金(2020-MS-215)

详细信息

作者简介:
刘芳：女，1979年生，教授，研究方向为无线通信、卫星导航

冯永新：女，1974年生，教授，研究方向为无线通信、电子对抗

通讯作者:
刘芳　zhqing1019@163.com

中图分类号: TN914.42
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- 被引次数: 0
出版历程
- 收稿日期: 2020-04-28
- 修回日期: 2020-12-09
- 网络出版日期: 2020-12-23
- 刊出日期: 2021-07-10

An Ultrahigh Order Code Index Modulation Method with Low Complexity

Fang LIU^{1
, ,},
Yongxin FENG²

1.
School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2.
Graduate School, Shenyang Ligong University, Shenyang 110159, China

Funds: The National Natural Science Foundation of China (61501309, 61971291), The Natural Science Foundation of Liaoning Province (2020-MS-215)

摘要

摘要: 为了应对直接序列扩频(DSSS)中信息传输率低的局限，出现了多进制扩频及索引调制等技术，由于此系列技术中附加信息都是通过伪码变换来映射的，因此调制阶数越大，复杂度也越大，而当系统所承受的复杂度受限时，调制阶数也就无法提升。为解决高阶信息传输率受限问题，该文提出一种低复杂度的超高阶码索引调制(UHO-CIM)方法，通过2维信息的分组来进行多码集索引，从而降低通道数量，进而通过3维信息的分组来进行循环移位索引，从而在不增加通道情况下大幅度地提高传输率，而且利用移位通道和非移位通道关系，去除环境影响。该方法不仅可以有效传输多维信息，而且与现有方法比较，复杂度大大降低，综合性能具有明显优势；此外，现有方法很难达到高阶及超高阶的信息传输，而提出的方法可实现调制阶数大于15的超高阶信息传输，从而为高效扩频通信应用提供可借鉴技术。
- 直接序列扩频 /
- 索引调制 /
- 超高阶 /
- 调制阶数
Abstract: In order to solve the limitation of low information transmission rate in Direct Sequence Spread Spectrum (DSSS), some techniques such as multi-band spread spectrum and index modulation appear. Because the additional information in this series of technologies is mapped by pseudo code transformation, the larger the modulation order is, the greater the complexity will be, and when the complexity of the system is limited, the modulation order will not be improved. In order to overcome the limitation of high-order information transmission rate, an UltraHigh Order Code Index Modulation (UHO-CIM) method with low complexity is proposed. The multi code set index is carried out by two-dimensional information grouping, so as to reduce the number of channels, and then the cyclic shift index is carried out by three-dimensional information grouping, so as to improve greatly the transmission rate without increasing the channels. Moreover, the relationship between shift channel and non-shift channel is used to remove the environmental impact. This method can not only effectively transmit multi-dimensional information, but also reduce greatly the complexity compared with the existing methods, and has obvious advantages in comprehensive performance. In addition, the existing methods are difficult to achieve high-order and ultra-high-order information transmission, while the proposed method can achieve ultra-high-order information transmission with modulation order greater than 15, which provides reference technology for the efficient spread spectrum communication applications.
- Direct Sequence Spread Spectrum (DSSS) /
- Index modulation /
- Ultrahigh order /
- Modulation order

HTML全文

图 1 峰均比结果

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图 2 接收概率结果

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图 3 $\lambda $=5时的误比特率对比结果

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图 4 $\lambda $=10时的误比特率对比结果

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图 5 $\lambda $为低阶时复杂度对比结果

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图 6 $\lambda $为高阶时复杂度对比结果

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图 7 $\lambda $为低阶时的PCR对比结果

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图 8 $\lambda $为高阶时的PCR对比结果

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图 9 复杂度受限时能达到的总调制阶数

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图 10 复杂度受限时PCR性能

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