1 Technical Features of ZTE’sDWDM SystemThe toll backbone wave division equipmentof ZXWM M900 backbone transmissionplatform is well designed forlarge-capacity optical transmission. It canfully satisfy the networking ...1 Technical Features of ZTE’sDWDM SystemThe toll backbone wave division equipmentof ZXWM M900 backbone transmissionplatform is well designed forlarge-capacity optical transmission. It canfully satisfy the networking and managementrequirements of diversified users and be fit forvarious toll backbone networks. The systemsupports up to 40 working wavelengths and up to400 Gb/s transmission capacity, and thewavelength selection and interval are in strictcompliance with ITU-T Recommendations. It展开更多
Ultra-high-speed, ultra-large-capacity and ultra-long-haul （3U） are the forever pursuit of optical communication. As a new mode of optical communication, 3U transmission can greatly promote next generation optical i...Ultra-high-speed, ultra-large-capacity and ultra-long-haul （3U） are the forever pursuit of optical communication. As a new mode of optical communication, 3U transmission can greatly promote next generation optical internet and broadband mobile communication network development and technological progress, therefore it has become the focus of international high-tech intellectual property competition ground. This paper introduces the scientific problems, key technologies and important achievements in 3U transmission research.展开更多
通过采用正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术,实现了高速数据流的高效并行传输。通过自适应调制技术的动态调整能力,以响应信道状态信息(Channel State Information,CSI)的变化,从而在光纤传输中对抗...通过采用正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术,实现了高速数据流的高效并行传输。通过自适应调制技术的动态调整能力,以响应信道状态信息(Channel State Information,CSI)的变化,从而在光纤传输中对抗色散和非线性效应等影响,优化系统性能。本研究提出基于深度神经网络(Deep Neural Networks,DNN)的自适应调制方案,通过实时监测子载波的有效信噪比(Signal to Interference plus Noise Ratio,SNR),动态调整比特分配和调制格式,以适应变化的信道条件。仿真结果表明,与固定调制格式相比,所提出的自适应调制方案在相同系统速率下显著降低了误码率,同时在不同误码率目标下均实现光信噪比的增益。展开更多
文摘1 Technical Features of ZTE’sDWDM SystemThe toll backbone wave division equipmentof ZXWM M900 backbone transmissionplatform is well designed forlarge-capacity optical transmission. It canfully satisfy the networking and managementrequirements of diversified users and be fit forvarious toll backbone networks. The systemsupports up to 40 working wavelengths and up to400 Gb/s transmission capacity, and thewavelength selection and interval are in strictcompliance with ITU-T Recommendations. It
文摘Ultra-high-speed, ultra-large-capacity and ultra-long-haul （3U） are the forever pursuit of optical communication. As a new mode of optical communication, 3U transmission can greatly promote next generation optical internet and broadband mobile communication network development and technological progress, therefore it has become the focus of international high-tech intellectual property competition ground. This paper introduces the scientific problems, key technologies and important achievements in 3U transmission research.
文摘通过采用正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术,实现了高速数据流的高效并行传输。通过自适应调制技术的动态调整能力,以响应信道状态信息(Channel State Information,CSI)的变化,从而在光纤传输中对抗色散和非线性效应等影响,优化系统性能。本研究提出基于深度神经网络(Deep Neural Networks,DNN)的自适应调制方案,通过实时监测子载波的有效信噪比(Signal to Interference plus Noise Ratio,SNR),动态调整比特分配和调制格式,以适应变化的信道条件。仿真结果表明,与固定调制格式相比,所提出的自适应调制方案在相同系统速率下显著降低了误码率,同时在不同误码率目标下均实现光信噪比的增益。
文摘随着广州地铁线网规模的持续扩大、业务需求的高速增长,结合广州地铁区域控制中心设置模式,既有的多业务传送平台(multi-service transport,MSTP)骨干承载网已经不能满足线网业务承载需要,迫切需要建设大容量的骨干承载网,以适应云计算、大数据以及人工智能(artificicalintelligence,AI)等新兴技术应用带来的超大业务承载需要。从承载网的技术发展以及广州地铁骨干网业务特点等方面,对广州地铁新一轮骨干网的技术制式、组网架构、系统容量等进行分析研究,提出本次骨干网的技术选择应以大容量、易扩容为基本原则,结合当前技术发展,对光传送网(optical transport network,OTN)技术作为骨干网的优势给予充分阐述,明确本次骨干网建设采用OTN技术;在骨干网的组网结构方面,充分结合广州地铁区域控制中心的设置特点,推荐按照控制中心的定位采用双环组网方式;在骨干网的系统容量上,根据业务特点详细总结各区域控制中心之间的容量需求,结合OTN技术特点,确定本次骨干网采用单波100 Gb/s的系统,内外环均按照80波配置。
