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X-ray communication, which was firstly introduced by Keithe Gendreau in 2007, is potential to compete with conventional communication methods, such as microwave and laser communication, against space surroundings. As a result, a great deal of time and effort has been devoted to making the initial idea into reality in recent years. Eventually, the X-ray communication demonstration system based on the grid-controlled X-ray source and microchannel plate detector can deliver both audio and video information in a 6-meter vacuum tunnel. The point is how to evaluate this space X-ray demonstration system in a typical experimental way. The method is to design a specific board to measure the relationship between bit-error-rate and emitting power against various communicating distances. In addition, the data should be compared with the calculation and simulation results to estimate the referred theoretical model. The concept of using X-ray as signal carriers is confirmed by our first generation X-ray communication demonstration system. Specifically, the method is to use grid-controlled emission source as a transceiver while implementing the photon counting detector which can be regarded as an important orientation of future deep-space X-ray communication applications. As the key specification of any given communication system, bit-error-rate level should be informed first. In addition, the theoretical analysis by using Poisson noise model also has been implemented to support this novel communication concept. Previous experimental results indicated that the X-ray audio demonstration system requires a 10-4 bit-error-rate level with 25 kbps communication rate. The system bit-error-rate based on on-off keying (OOK) modulation is calculated and measured, which corresponds to the theoretical calculation commendably. Another point that should be taken into consideration is the emitting energy, which is the main restriction of current X-ray communication system. The designed experiment shows that the detected X-ray energy is 7×10-5 mW/m2. This relatively low power level not only restricts the bit rate of transceiver, but also increases the error fraction to some extent. Obviously, OOK modulation can meet the high communication rate and relatively low bit-error-rate requirement of current audio demo system. Current restriction has been pointed out and the potential improvement is also presented.
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Keywords:
- X-ray communication /
- Poisson noise model /
- bit error rate /
- photon counting detector
[1] Bass M 2010 Handbook of Optics (3rd Ed.) (Columbus: The McGraw-Hill Companies) p791
[2] Zhang X Y 2012 New Method of X-ray Space Communication (Beijing: China Science Daily) 2012-1-19(4) (in Chinese) [张行勇 2012 空间X射线通信新方法提出 (北京: 中国科学报) 2012-1-19(4)]
[3] Zhao B S, Wu C X, Sheng L Z, Liu Y A 2013 Acta Photon. Sin. 42 801(in Chinese) [赵宝升, 吴川行, 盛立志, 刘永安 2013 光子学报 42 801]
[4] Deng N Q, Zhao B S, Sheng L Z, Yan Q R, Yang H, Liu D 2013 Acta Phys. Sin. 62 060705 (in Chinese) [邓宁勤, 赵宝升, 盛立志, 鄢秋荣, 杨灏, 刘舵 2013 62 060705]
[5] Qun F H, Brian M S, Zheng Y X 2009 Proc. SPIE 7464 74640H
[6] Ke X Z, Xi X L 2006 The Introduction of Wireless Laser Communication (Beijing: Beijing University of Post and Telecommunications Press) p173 (in Chinese) [柯熙政, 席晓莉 2006 无线激光通信概论 (北京: 北京邮电大学出版社) 第173页]
[7] Wang P, Zhao B S, Sheng L Z, Hu H J, Yan Q R 2012 Acta Phys. Sin. 61 209702 (in Chinese) [王朋, 赵宝升, 盛立志, 胡慧君, 鄢秋荣 2012 61 209702]
[8] Zhao M Y 2012 Acta Phys. Sin. 61 019701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 赛小峰, 鄢秋荣, 陈宝梅, 王朋 2012 61 019701]
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[1] Bass M 2010 Handbook of Optics (3rd Ed.) (Columbus: The McGraw-Hill Companies) p791
[2] Zhang X Y 2012 New Method of X-ray Space Communication (Beijing: China Science Daily) 2012-1-19(4) (in Chinese) [张行勇 2012 空间X射线通信新方法提出 (北京: 中国科学报) 2012-1-19(4)]
[3] Zhao B S, Wu C X, Sheng L Z, Liu Y A 2013 Acta Photon. Sin. 42 801(in Chinese) [赵宝升, 吴川行, 盛立志, 刘永安 2013 光子学报 42 801]
[4] Deng N Q, Zhao B S, Sheng L Z, Yan Q R, Yang H, Liu D 2013 Acta Phys. Sin. 62 060705 (in Chinese) [邓宁勤, 赵宝升, 盛立志, 鄢秋荣, 杨灏, 刘舵 2013 62 060705]
[5] Qun F H, Brian M S, Zheng Y X 2009 Proc. SPIE 7464 74640H
[6] Ke X Z, Xi X L 2006 The Introduction of Wireless Laser Communication (Beijing: Beijing University of Post and Telecommunications Press) p173 (in Chinese) [柯熙政, 席晓莉 2006 无线激光通信概论 (北京: 北京邮电大学出版社) 第173页]
[7] Wang P, Zhao B S, Sheng L Z, Hu H J, Yan Q R 2012 Acta Phys. Sin. 61 209702 (in Chinese) [王朋, 赵宝升, 盛立志, 胡慧君, 鄢秋荣 2012 61 209702]
[8] Zhao M Y 2012 Acta Phys. Sin. 61 019701 (in Chinese) [胡慧君, 赵宝升, 盛立志, 赛小峰, 鄢秋荣, 陈宝梅, 王朋 2012 61 019701]
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