相关实验视频
Updated: Jul 8, 2025

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
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概括
这项研究引入了一种新的配对子载波等级方案,用于数字子载波复杂化 (DSCM) 传输. 拟议的方法有效地减轻相位噪声和发射器智商偏差,增强超大波速光通信系统.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 数字子载波多重复合 (DSCM) 对于未来的超大波速传输至关重要.
- 在DSCM中狭窄的子频段传输降低了对相位噪声和发射器 (Tx) IQ偏差的耐受性,这是由于联干扰造成的.
研究的目的:
- 提出一套配对子载波平衡方案,以共同减轻DSCM系统中的相位噪声和Tx IQ偏差.
- 为了提高高 baud率光学传输的性能和稳定性.
主要方法:
- 嵌入式4x4 MIMO等分器的相锁循环 (PLL) 用于同时极化解复,相噪声和Tx IQ偏斜补偿.
- 用内部子载体进行相位噪声估计,以减少复杂性,并在子载体之间共享信息.
- 进行了100GBaud 64-QAM和10GBaud PM-16QAM DSCM连贯光纤传输的模拟和实验.
主要成果:
- 拟议的PLL嵌入式等效器与现有的等效器相比,显示出优越的相位噪声和斜率补偿能力.
- 4×4 MIMO 均衡器有效地处理了 DSCM 固有的配对子载波干扰.
- 模拟显示,相位噪声和Tx IQ偏差对DSCM传输的影响显著减少.
结论:
- 配对子载波平衡方案为缓解高速DSCM光通信中的关键损伤提供了强大的解决方案.
- 开发的等分器通过解决相位噪声和智商偏差挑战,提高了超大波速传输的可行性.
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