跳时短参考载波索引差分混沌移位键控通信方案  

Time hopping short reference carrier index differential chaos shift keying communication scheme

作　　者：杨华 王宇 徐思远 蒋国平 YANG Hua;WANG Yu;XU Siyuan;JIANG Guoping(College of Electronic and Optical Engineering&College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;College of Automation&College of Artificial Intelligence,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院、微电子学院,江苏南京210023 [2]南京邮电大学自动化学院、人工智能学院,江苏南京210023

出　　处：《通信学报》2022年第3期113-123,共11页Journal on Communications

基　　金：国家自然科学基金资助项目(No.61971240,No.61873326);湖南省自然科学基金资助项目(No.2019JJ60024)。

摘　　要：为有效利用载波索引差分混沌移位键控通信系统中参考信号的发射功率,提出了一种跳时短参考载波索引差分混沌移位键控通信方案。首先,将符号时间分成多个时隙后,根据参考索引比特取其中的一个时隙来发送短参考信号;然后,推导了所提方案在加性白高斯噪声信道和多径Rayleigh衰落信道下的理论误码率计算式。仿真结果表明,所提方案在频带利用率、系统能量效率以及误码率性能方面都有显著提升。In order to effectively utilize the transmission power of the reference signals in carrier index differential chaos shift keying(CI-DCSK),a novel time hopping short reference carrier index differential chaos shift keying communication system was proposed.Firstly,the symbol time was divided into multiple time slots,one of which was selected to send short reference signals according to the reference index bits.Then,analytical bit error rate expressions over additive white Gaussian noise and multipath Rayleigh fading channels were derived.Simulation results verify that the proposed scheme has a significant improvement in spectral efficiency,system energy efficiency and bit error rate performance.

关 键 词：差分混沌移位键控 载波索引调制 短参考 跳时 频带利用率 

分 类 号：TN918[电子电信—通信与信息系统]