通信学报2024，Vol.45Issue(8)：75-83,9.DOI:10.11959/j.issn.1000-436x.2024147
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
摘要
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 uti-lized 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 overmodu-lation effectively improved symbol synchronization performance while carrying additional information.The synchroniza-tion 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 communi-cation scheme for pilot-free short packet communication effectively improves the symbol synchronization performance,and transmits additional lbM bit information compared to a single overmodulation sequence.关键词
短包传输/无前导/循环移位码元/M进制过调制/码元同步Key words
short packet transmission/pilot-free/CCSK/M-ary overmodulation/symbol synchronization分类
信息技术与安全科学引用本文复制引用
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(8):75-83,9.基金项目
国家自然科学基金资助项目(No.61871473) （No.61871473）
海军工程大学自主研发计划基金资助项目(No.2023503090) The National Natural Science Foundation of China(No.61871473),Naval Engineering University's Independent Research and Development Program Project(No.2023503090) （No.2023503090）
