发帖
雷达卡
摘要翻译：
对于未来基于5G以太网的fronthaul架构，传输距离高达10公里的100G干线标准单模光纤(SSMF)结合廉价的灰色光学到菊花链小区站点网络接口是一个有希望的成本和功率高效的解决方案。针对这种情况，本文采用低成本的电吸收调制激光器(EML)、一个25G驱动器和目前最先进的高速84 Gs/s CMOS数模转换器(DAC)和模数转换器(ADC)测试芯片，在112 Gb/s的数据速率下，研究了不同的强度调制和直接检测(IMDD)格式，即奈奎斯特四电平脉冲幅度调制(PAM4)、离散多音传输(DMT)和部分响应(PR)PAM4。每种调制格式都是针对所需的场景独立优化的，并研究了它们的数字信号处理(DSP)要求。Nyquist PAM4和PR PAM4的性能在很大程度上取决于前后均衡的效率。我们表明了至少11个FFE抽头用于预加重和在接收机侧多达41个FFE系数的必要性。另外，PR PAM4需要具有四种状态的MLSE将信号解码回PAM4信号。相反，比特和功率负载(BL，PL)对于DMT是至关重要的，并且至少512的FFT长度是必要的。通过优化参数，所有调制格式都具有非常相似的性能，证明在SSMF上传输距离可达10 km，误码率低于FEC门限4.4e-3，允许无差错传输。
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英文标题：
《Performance Comparison of 112 Gb/s DMT, Nyquist PAM4 and
Partial-Response PAM4 for Future 5G Ethernet-based Fronthaul Architecture》
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作者：
Nicklas Eiselt, Daniel Muench, Annika Dochhan, Helmut Griesser,
Michael Eiselt, Juan Jose Vegas Olmos, Idelfonso Tafur Monroy, and
Joerg-Peter Elbers
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最新提交年份：
2018
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分类信息：
一级分类：Electrical Engineering and Systems Science 电气工程与系统科学
二级分类：Signal Processing 信号处理
分类描述：Theory, algorithms, performance analysis and applications of signal and data analysis, including physical modeling, processing, detection and parameter estimation, learning, mining, retrieval, and information extraction. The term "signal" includes speech, audio, sonar, radar, geophysical, physiological, (bio-) medical, image, video, and multimodal natural and man-made signals, including communication signals and data. Topics of interest include: statistical signal processing, spectral estimation and system identification; filter design, adaptive filtering / stochastic learning; (compressive) sampling, sensing, and transform-domain methods including fast algorithms; signal processing for machine learning and machine learning for signal processing applications; in-network and graph signal processing; convex and nonconvex optimization methods for signal processing applications; radar, sonar, and sensor array beamforming and direction finding; communications signal processing; low power, multi-core and system-on-chip signal processing; sensing, communication, analysis and optimization for cyber-physical systems such as power grids and the Internet of Things.
信号和数据分析的理论、算法、性能分析和应用，包括物理建模、处理、检测和参数估计、学习、挖掘、检索和信息提取。“信号”一词包括语音、音频、声纳、雷达、地球物理、生理、（生物）医学、图像、视频和多模态自然和人为信号，包括通信信号和数据。感兴趣的主题包括：统计信号处理、谱估计和系统辨识；滤波器设计；自适应滤波/随机学习；（压缩）采样、传感和变换域方法，包括快速算法；用于机器学习的信号处理和用于信号处理应用的机器学习；网络与图形信号处理；信号处理中的凸和非凸优化方法；雷达、声纳和传感器阵列波束形成和测向；通信信号处理；低功耗、多核、片上系统信号处理；信息物理系统的传感、通信、分析和优化，如电网和物联网。
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一级分类：Computer Science 计算机科学
二级分类：Networking and Internet Architecture 网络和因特网体系结构
分类描述：Covers all aspects of computer communication networks, including network architecture and design, network protocols, and internetwork standards (like TCP/IP). Also includes topics, such as web caching, that are directly relevant to Internet architecture and performance. Roughly includes all of ACM Subject Class C.2 except C.2.4, which is more likely to have Distributed, Parallel, and Cluster Computing as the primary subject area.
涵盖计算机通信网络的所有方面，包括网络体系结构和设计、网络协议和网络间标准（如TCP/IP）。还包括与Internet体系结构和性能直接相关的主题，如web缓存。大致包括除C.2.4以外的所有ACM主题类C.2，后者更有可能将分布式、并行和集群计算作为主要主题领域。
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英文摘要：
For a future 5G Ethernet-based fronthaul architecture, 100G trunk lines of a transmission distance up to 10 km standard single mode fiber (SSMF) in combination with cheap grey optics to daisy chain cell site network interfaces are a promising cost- and power-efficient solution. For such a scenario, different intensity modulation and direct detect (IMDD) Formats at a data rate of 112 Gb/s, namely Nyquist four-level pulse amplitude modulation (PAM4), discrete multi-tone Transmission (DMT) and partial-response (PR) PAM4 are experimentally investigated, using a low-cost electro-absorption modulated laser (EML), a 25G driver and current state-of-the-art high Speed 84 GS/s CMOS digital-to-analog converter (DAC) and analog-to-digital converter (ADC) test chips. Each modulation Format is optimized independently for the desired scenario and their digital signal processing (DSP) requirements are investigated. The performance of Nyquist PAM4 and PR PAM4 depend very much on the efficiency of pre- and post-equalization. We show the necessity for at least 11 FFE-taps for pre-emphasis and up to 41 FFE coefficients at the receiver side. In addition, PR PAM4 requires an MLSE with four states to decode the signal back to a PAM4 signal. On the contrary, bit- and power-loading (BL, PL) is crucial for DMT and an FFT length of at least 512 is necessary. With optimized parameters, all Modulation formats result in a very similar performances, demonstrating a transmission distance of up to 10 km over SSMF with bit error rates (BERs) below a FEC threshold of 4.4E-3, allowing error free transmission.
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PDF链接：
https://arxiv.org/pdf/1801.10574
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