ID 原文 译文
56698 最后给出了知识驱动的流程工业智能制造面临的挑战性问题和未来展望. Further, the challenges and future prospects of knowledge-drivenprocess industry smart manufacturing are provided
56699 光纤通信作为二战以来最有意义的四大发明之一,奠定了网络信息传输的基石,承载了全球90%以上数据流量,但预计其未来20年将遭遇"传输容量危机". As one of the four most significant inventions since World War II, optical fiber communication hasprovided a foundation for the development of the information society, carrying more than 90% of the globaldata traffic.
56700 本文围绕超高速率、超大容量、超长距离、超宽灵活、超强智能(ultra-high speed, ultra-large capacity, ultra-long distance, ultra-wideband flexibility, and ultra-powerful intelligence, 5U)这5个光纤通信的发展维度开展研究,在回顾了其50多年发展历程的基础上,对近10年来所取得的一系列最新进展进行了全面综述,并就未来10年甚至20年的演进趋势做出展望. However, it is expected that it will encounter a “capacity crisis” in the next two decades. Thispaper focuses on the five development dimensions of optical fiber communications: ultra-high speed, ultra-largecapacity, ultra-long distance, ultra-wideband flexibility, and ultra-powerful intelligence (5U). Based on a review ofits development over the past 50 years, the paper provides a comprehensive review of the latest progress achievedin the past decade and presents a bold outlook on the evolutionary trends in the next decade or even two. Thisreview hopes to provide a reference for researchers in related fields.
56701 本文从Shannon信息论及其扩展形式的角度,探讨未来6G移动通信系统性能提升的潜能.首先,对经典Shannon信道容量及传输性能折中理论框架进行了概括,并探讨了其在当代移动通信系统中应用的局限性.其次,对Shannon信息论的多输入多输出(MIMO)扩展形式进行了论述,指出了其在当代移动通信系统发展中所扮演的基础性作用;鉴于Shannon信息论及其MIMO扩展形式均为非构造性的,文中还分别讨论了信道容量构造性逼近的两种重要途径—信道极化和特征模式无线传输. From the perspective of Shannon theory and its extensions, this paper is devoted to evaluate thetechnique potentials of the future 6G mobile communication system. First, the classic Shannon theory framework,including the performance tradeoff between block length, data rate, and reliability, is summarized, and thelimitations of its application in the contemporary mobile communication system are addressed. Second, themultiple-input-multiple-output (MIMO) extension of classic Shannon theory is described, which plays fundamentalroles in the development of contemporary mobile communication systems. Moreover, because Shannon theory andits MIMO extension are nonconstructive in nature, two kinds of constructive capacity-approaching mechanisms,namely, channel polarization and eigen-mode wireless transmission, are also introduced.
56702 然后,围绕更高的频谱效率与功率效率、更高的可靠性与更低的时延、更高的频段等6G技术发展需求,从基础理论的角度探讨其性能进一步提升的潜能,主要结论包括:通过引入更多的天线、无蜂窝网络构架创新,以及分块长度–差错概率–传输速率–最小天线数等关键参数的有效平衡等途径,未来6G技术仍然具有较大的提升潜能,但需要在系统性能与部署成本之间进行折中,并有针对性地有效获取高频段MIMO信道容量. Furthermore, aiming athigher spectrum efficiency and power efficiency, higher reliability and lower latency, and higher frequency band,which are essential indicators of future 6G, the technique potentials are theoretically discussed from the perspectiveof Shannon theory framework. It reveals that by introducing more antennas together with the innovation of cell?free network architecture and by making an effective balance between block length, error probability, data rate,and the minimum number of antennas, future 6G technology still has great potential to be improved. However, acompromise between system performance and deployment cost must be made, and the special features of MIMOchannels in higher frequency bands must be carefully utilized.
56703 最后本文对涉及未来发展的若干基础性问题进行了总结. Finally, several fundamental issues related to future6G development are summarized.
56704 量子信息技术是量子力学与信息科学融合的新兴交叉学科,它的诞生标志着人类社会将从经典技术迈进到量子技术的新时代,本文将阐述量子信息技术的研究现状与未来. Quantum information technology is an emerging interdisciplinary field of quantum mechanics andinformation science, whose birth will promote a new era of human intelligence from classical technology to quan?tum technology. This paper elaborates on the research status and future of the field of quantum informationtechnology.
56705 文中描绘了量子技术发展远景,即筑建各种类型的量子网络,包括量子云计算网络、分布式量子计算、量子传感网络和量子密钥分配网络等. Moreover, this paper shows the vision of quantum technology, i. e. , the construction of various typesof quantum networks, including quantum cloud computing networks, distributed quantum computing, quantumsensor networks, and quantum key distribution networks.
56706 量子计算机已从实验室的研究迈进到企业的实用器件研制,目前已发展到中等规模带噪声量子计算机(noisy intermidiate-scale quantum, NISQ)的阶段. Quantum computers have transformed research fromthe laboratory to the development of practical devices led by these enterprises. Currently, research and develop?ment of quantum computers have shifted to the stage of noisy intermediate-scale quantum computers (NISQ).
56707 在量子技术时代,没有绝对安全的保密体系,也没有无坚不摧的破译手段,信息安全进入"量子对抗"的新阶段. In the era of quantum technology, there is no absolutely secure secrecy system or omnipotent way of decipheringInformation and information security has entered a new stage of “quantum offense and defense. ”