相关实验视频
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光学-OFDM VLC 系统:高峰到平均功率比提高和性能评估
Yasser A Zenhom1, Ehab K I Hamad2, Mohammed Alghassab3
1Communication Department, Modern Academy for Engineering and Technology, Cairo 11571, Egypt.
Sensors (Basel, Switzerland)
|May 25, 2024
概括
这项研究引入了一种新的Vandermonde-Like Matrix (VLM) 预编码技术,用于降低可见光通信 (VLC) 系统中高峰到平均功率比率 (PAPR) 的数据速率或比特错误率 (BER).
科学领域:
- 光电学是指光电子产品.
- 无线通信无线通信
- 信号处理 信号处理
背景情况:
- 可见光通信 (VLC) 提供高带宽和EMI弹性.
- 光学直角频率分割多重复合 (O-OFDM) 对VLC系统至关重要.
- 高峰到平均功率比 (PAPR) 是基于O-OFDM的VLC的一个重大挑战.
研究的目的:
- 探索和评估用于VLC系统的各种O-OFDM构造.
- 为了解决和减轻O-OFDM VLC中的高PAPR问题.
- 提出和验证一种新的PAPR减少技术,以提高VLC性能.
主要方法:
- 研究的O-OFDM参数:星座大小,数据排列,光谱/功率效率,计算复杂性,BER和PAPR.
- 提出了一种不扭曲的Vandermonde-Like Matrix (VLM) 预编码技术来减少PAPR.
- 在各种O-OFDM变种 (DCO-OFDM,ADO-OFDM,ACO-OFDM,FLIP-OFDM,ASCO-OFDM,LACO-OFDM) 中实施和测试了VLM技术.
主要成果:
- 在各种O-OFDM VLC系统中,VLM技术有效地减少了PAPR.
- 拟议的方法保持了系统数据速率,不需要侧面信息传输.
- VLM预编码对比特错误率 (BER) 性能没有不利影响.
- 对比分析证明了VLM与现有的PAPR降低方法的有效性.
结论:
- 范德蒙德样矩阵 (VLM) 预编码技术是O-OFDM VLC系统中减少PAPR的有希望的解决方案.
- 这种方法通过降低PAPR而提高系统性能,而不会影响数据速率或BER.
- VLM为提高VLC技术的效率和适用性提供了宝贵的贡献.
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