Scalable optical relay for LED-ID systems

2010 International Conference on Information and Communication Technology Convergence (ICTC) Pub Date : 2010-12-23 DOI:10.1109/ICTC.2010.5674812

I. Park, Y. Kim, J. Cha, Kye-san Lee, Y. Jang, J. Kim

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引用次数: 21

Abstract

LED-ID (light emitting diode - identification) system typically uses line of sight (LOS) channels to achieve high data rate and bright illumination. In LOS channel, however, the LED-ID system has very narrow coverage. In cellular networks, the relay station has been introduced to improve system throughput and coverage. Accordingly, new optical relay scheme is essential to support multi-hop transmission in relay-assisted LED-ID networks. In this paper, effects of shadow region problem are investigated for LED identification (LED-ID) system in a non-line of sight (NLOS) environment. A scenario on shadow region problem is proposed, and nominal interrogation range of a desired reader is derived from this model. In order to expand the coverage of LED-ID networks, an efficient optical relay scheme is proposed and simulated by employing cooperative communication methodology. It is confirmed that the proposed technique performs well both in terms of throughput and fairness by simulation results. Also, the proposed scheme is very effective to expand coverage of LED-ID communication networks.

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用于LED-ID系统的可扩展光继电器

LED-ID(发光二极管识别)系统通常使用视线(LOS)通道来实现高数据速率和明亮的照明。然而，在LOS信道中，LED-ID系统的覆盖范围非常窄。在蜂窝网络中，为了提高系统吞吐量和覆盖范围，引入了中继站。因此，为了支持中继辅助LED-ID网络中的多跳传输，新的光中继方案是必不可少的。本文研究了阴影区域问题对非视线环境下LED识别系统的影响。提出了一个关于阴影区域问题的场景，并从该模型推导出了期望读者的名义询问范围。为了扩大LED-ID网络的覆盖范围，提出了一种高效的光中继方案，并采用协作通信方法进行了仿真。仿真结果表明，该方法在吞吐量和公平性方面都有较好的表现。该方案对于扩大LED-ID通信网络的覆盖范围是非常有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 International Conference on Information and Communication Technology Convergence (ICTC)

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