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基于循环移位码元的
M 进制过调制无前导短包通信方案M -ary overmodulation based on cyclic shift symbols for pilot-free short packet communication scheme- 通信学报 2024年45卷第8期 页码：75-83
- 作者机构：
海军工程大学电子工程学院，湖北 武汉 430033
- 作者简介：
[ "修梦雷（1996- ），男，安徽亳州人，海军工程大学博士生，主要研究方向为信息论与编码、通信与信息系统。" ]
[ "窦高奇（1981- ），男，山西长治人，博士，海军工程大学教授、博士生导师，主要研究方向为无线通信理论与技术。" ]
[ "王颢（1997- ），男，山东潍坊人，海军工程大学博士生，主要研究方向为信息论与编码、通信与信息系统。" ]
- 基金信息：国家自然科学基金资助项目(61871473);海军工程大学自主研发计划基金资助项目(2023503090)
DOI：10.11959/j.issn.1000-436x.2024147
中图分类号： TN92收稿日期：2024-05-13，
修回日期：2024-07-15，
纸质出版日期：2024-08-25
- 稿件说明：
移动端阅览
修梦雷,窦高奇,王颢.基于循环移位码元的M进制过调制无前导短包通信方案[J].通信学报,2024,45(08):75-83.
XIU Menglei,DOU Gaoqi,WANG Hao.M-ary overmodulation based on cyclic shift symbols for pilot-free short packet communication scheme[J].Journal on Communications,2024,45(08):75-83.
修梦雷,窦高奇,王颢.基于循环移位码元的M进制过调制无前导短包通信方案[J].通信学报,2024,45(08):75-83. DOI： 10.11959/j.issn.1000-436x.2024147.
XIU Menglei,DOU Gaoqi,WANG Hao.M-ary overmodulation based on cyclic shift symbols for pilot-free short packet communication scheme[J].Journal on Communications,2024,45(08):75-83. DOI： 10.11959/j.issn.1000-436x.2024147.
摘要
为了解决短包结构中前导训练开销过大导致传输效率低的问题，提出了一种基于循环移位码元的
M
进制过调制无前导短包通信方案。该方案使用循环移位码元对伪随机序列进行调制，并采用
M
进制过调制序列对多个码元循环移位进行二次调制。接收端利用伪随机序列良好的自相关与互相关特性，实现无前导训练的检测和同步，有效降低了短包前导训练开销。而过调制的引入在携带额外信息的同时，可有效提高码元同步性能。另外，推导了循环移位和过调制后的短包码元同步评价函数，验证了
M
进制过调制加载信息的可行性。仿真结果表明，在加性白高斯噪声和瑞利衰落信道下，基于循环移位码元的
M
进制过调制无前导短包通信方案有效提高了码元同步性能，相比于单个过调制序列，该方案额外传输了lb
M
bit信息。
Abstract
To solve the problem of low transmission efficiency caused by the high overhead of the pilot in the short packet structure
a
M
-ary overmodulation based on cyclic shift symbol for pilot-free short packet communication scheme was proposed. The scheme adopted cycle code shift keying (CCSK) to modulate pseudo noise (PN) sequences
and used
M
-ary overmodulation sequences to perform secondary modulation on multiple CCSK symbols. The receiving end utilized the good autocorrelation and cross-correlation characteristics of PN sequences to achieve pilot-free detection and synchronization
which effectively eliminated the training overhead of short packet pilots. The introduction of overmodulation effectively improved symbol synchronization performance while carrying additional information. The synchronization evaluation function of short packet symbols after CCSK and overmodulation was derived
and the feasibility of
M
-ary overmodulation loading information was verified. Simulation results demonstrate that under AWGN and Rayleigh fading channels
the proposed
M
-ary overmodulation based on cyclic shift symbols for pilot-free short packet communicat
ion scheme for pilot-free short packet communication effectively improves the symbol synchronization performance
and transmits additional lb
M
bit information compared to a single overmodulation sequence.
关键词
Keywords
references
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