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arXiv 2001.04007eess.SP
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光子计数探测器阵列在自由空间中的光束跟踪(Optical Communications)

Beam Tracking with Photon-Counting Detector Arrays in Free-Space Optical Communications

Muhammad Salman Bashir, Mohamed-Slim Alouini

摘要:

检测器阵列上的光束中心位置是重要的(隐藏的)参数,其不仅从跟踪的角度来看是必不可少的,而且对于自由空间光通信中的脉冲位置调制符号的最佳检测也是重要的。在本文中,我们研究了光子计数探测器阵列的束流位置估计问题,为此,我们提出并分析了一些非贝叶斯束流位置估计器。这些估计进行了比较,在他们的均方误差,偏差和概率的错误性能。此外,Cramer-Rao下限(CRLB)的跟踪误差也推导出来,CRLB曲线给我们更多的见解有关的影响,检测器的数量和光束半径的均方误差性能。最后,波束位置估计的错误性能的概率上的影响进行了研究,我们的研究得出结论,当阵列上的波束位置估计尽可能准确时,系统的错误概率最小。

英文摘要:

Optical beam center position on an array of detectors is an important (hidden) parameter that is essential not only from a tracking perspective, but is also important for optimal detection of Pulse Position Modulation symbols in free-space optical communications. In this paper, we have examined the beam position estimation problem for photon-counting detector arrays, and to this end, we have proposed and analyzed a number of non-Bayesian beam position estimators. These estimators are compared in terms of their mean-square error, bias and the probability of error performance. Additionally, the Cramer-Rao Lower Bounds (CRLB) of the tracking error is also derived, and the CRLB curves give us additional insights concerning the effect of number of detectors and the beam radius on mean-square error performance. Finally, the effect of beam position estimation on the probability of error performance is investigated, and our study concludes that the probability of error of the system is minimized when the beam position on the array is estimated as accurately as possible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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