X-Ray Characteristics of Four-Level Pulse Amplitude Modulation for X-Ray Communication Based on Carbon Nanotube Cold Cathode X-Ray Source

被引:4
作者
Lai, Sheng [1 ]
Liu, Yunpeng [1 ,2 ]
Hang, Shuang [3 ]
Mu, Junxu [1 ]
Tang, Xiaobin [1 ,2 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Technol, Nanjing 210016, Peoples R China
[2] Minist Ind & Informat Technol, Key Lab Nucl Technol Applicat & Radiat Protect Ast, Nanjing 210016, Peoples R China
[3] Acad Mil Sci, Strateg Assessments & Consultat Inst, Beijing 100091, Peoples R China
关键词
Carbon nanotube (CNT) cold cathode X-ray source; high-frequency pulse signal; pulse amplitude modulation with four level (PAM-4); X-ray communication (XCOM); FIELD-EMISSION; FABRICATION;
D O I
10.1109/TED.2023.3309276
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this work, a pulse amplitude modulation with four-level (PAM-4) signal loading scheme based on carbon nanotube (CNT) cold cathode X-ray source is designed for X-ray communication (XCOM). The relationship between the X-ray waveforms and amplitude characteristics under this scheme is studied, and the XCOM performance is obtained. Results show that the amplitude difference of each level of X-ray waveforms is obvious, and it is corresponding well with the input signal amplitude. The X-ray amplitude difference of each level is 0.7-0.8 V when the ratio of the four pulse voltage signal amplitudes is 1:0.42: -0.12: -1. About 70% of the signal waveforms of each level is relatively concentrated under different frequencies, and this proves the stability and feasibility of the PAM-4 loading scheme. According to the 26-letter American standard code for information interchange (ASCII) code signal transmission experiment, the bit error rate (BER) is increased from 0 to 4.7 x 10(-2) when the pulse frequency increases from 1 to 1000 kHz. This work designs a PAM-4 signal loading scheme for XCOM with a CNT cold cathode X-ray source, which can promote the development of XCOM technology in the future.
引用
收藏
页码:5877 / 5882
页数:6
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