对于基于阿拉穆蒂代码的简化连贯系统,部分解的两极分离解复和相位噪声均衡器
Optics express
|November 29, 2023
概括
这项研究为阿拉穆蒂时空区块代码 (STBC) 系统引入了一种新的部分解均衡器,显著减少了合代,并提高了相位噪声耐受性,以实现成本效益高的极化不敏感检测.
科学领域:
- 光学通信系统 光学通信系统
- 用于光通信的信号处理.
- 先进的调制和编码技术.
背景情况:
- 阿拉穆蒂时空区块代码 (STBC) 配有异质连贯接收器,可提供具有成本效益的极化不敏感的相位多样性检测.
- 现有的STBC联合均等器需要复杂的多参数更新,导致缓慢的融合和有限的相位噪声耐受性.
研究的目的:
- 提出和评估一种新型的部分脱均等器,以加快收并提高STBC接收器的相位噪声耐受性.
- 为了减少光学通信系统中极化解复和相位追踪的复杂性.
主要方法:
- 一个极化和相解平器 (PPDE) 使用单个步骤大小参数进行极化去复数.
- 一个试点辅助的盲相搜索 (P-BPS) 算法用于载体相恢复,增强相噪声耐受性和解决周期性滑动.
- 数字模拟和实验验证使用正方形相位移键化 (QPSK) 信号.
主要成果:
- 与传统的联合均衡器相比,拟议的PPDE需要约一半的代数进行融合.
- 该系统即使在显著的相位噪声条件下也保持着极化不敏感的特性.
- 与DD-LMS算法相比,P-BPS算法显示可实现的线宽容忍度增加了三倍.
结论:
- 部分脱的等分器显著提高了合速度,并减少了STBC系统的复杂性.
- 该P-BPS算法提供了卓越的相位噪声和线宽耐受性,对于强大的光通信至关重要.
- 拟议的方法为光学系统中具有成本效益的极化不敏感检测提供了更有效和更宽容的解决方案.
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