...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical Engineering >Experimental implementation of digital equalizer for multilevel signal in visible light communication
【24h】

Experimental implementation of digital equalizer for multilevel signal in visible light communication

机译：Experimental implementation of digital equalizer for multilevel signal in visible light communication

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

An equalization scheme consisting of two square-root-raised-cosine filters and a finite impulse response (FIR) filter is proposed to compensate the channel fading at high frequency induced by light-emitting diodes (LEDs) in visible light communication (VLC). Using the digital equalizer based on this scheme, the performance of the VLC system with different multilevel baseband signals is analyzed experimentally. It is demonstrated that, when the proposed digital equalizer is introduced in the VLC system, the transmission rate is shown to double under forward error correction threshold. As a result, a transmission rate of 120 Mb/s is realized when the LED's 3-dB bandwidth is only 13 MHz. The number of the FIR tap coefficients was also optimized by considering the transmission performances and computational complexity, which is set to 32 in the adopted digital equalizer. The relation between the system performance improvement and signal Euclidean distance with the same bit per symbol is further investigated. The results reveal that the longer Euclidean distance is beneficial to the improvement of transmission performance for the VLC system with the proposed equalizer.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号