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Orthogonal Model Division Multiple Access

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 2024年第9期23卷 11693-11707页

作者： Liang, Haotai Liu, Kaijun Liu, Xiaoyi Jiang, Hongchao Dong, Chen Xu, Xiaodong Niu, Kai Zhang, Ping Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Peng Cheng Lab Dept Broadband Commun Shenzhen 518066 Guangdong Peoples R China Beijing Univ Posts & Telecommun Key Lab Universal Wireless Commun Minist Educ Beijing 100876 Peoples R China Peng Cheng Lab Shenzhen 518066 Peoples R China

Multiple access technologies are critical technologies in every communication era. As a promising paradigm for next-generation mobile communication, semantic communication has explored new semantic information space resources. Based on the characteristic that different semantic models cannot understand semantic information generated by other models, we propose the concept of semantic orthogonal signals. Combining the advantages of Deep joint source and channel coding (DeepJSCC), an Orthogonal-Model Division Multiple Access (O-MDMA) technology that can be applied to any semantic model is proposed. The essence of O-MDMA is to migrate the anti-interference capability of DeepJSCC to the multi-user capacity. Compared with Non-Orthgonal Multiple Access (NOMA) and Model Division Multiple Access (MDMA) technologies, O-MDMA has better performance. The O-MDMA can be integrated with NOMA, and experimental results show that the combined technique can save more bandwidth.

关键词： Semantic orthogonal signals orthogonal-model multiple access (O-MDMA) deep joint source and channel coding (DeepJSCC) Semantic orthogonal signals orthogonal-model multiple access (O-MDMA) deep joint source and channel coding (DeepJSCC)

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Verifiable Quantum (k,n)-threshold Secret key Sharing

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INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 2011年第3期50卷 792-798页

作者： Yang, Yu-Guang Teng, Yi-Wei Chai, Hai-Ping Wen, Qiao-Yan Beijing Univ Technol Coll Comp Sci & Technol Beijing 100124 Peoples R China Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Chinese Acad Sci State Key Lab Informat Secur Grad Univ Beijing 100049 Peoples R China Xidian Univ State Key Lab Integrated Serv Network Xian 710071 Peoples R China

Based on Lagrange interpolation formula and the post-verification mechanism, we show how to construct a verifiable quantum (k,n) threshold secret key sharing scheme. Compared with the previous secret sharing protocols, ours has the merits: (i) it can resist the fraud of the dealer who generates and distributes fake shares among the participants during the secret distribution phase;Most importantly, (ii) It can check the cheating of the dishonest participant who provides a false share during the secret reconstruction phase such that the authorized group cannot recover the correct secret.

关键词： Verifiable secret sharing Quantum secret sharing Lagrange interpolation formula Post-verification mechanism Quantum cryptography

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Glucose-tracking: A postprandial glucose prediction system for diabetic self-management

Glucose-tracking: A postprandial glucose prediction system f...

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International Symposium on Future Information and Communication Technologies for Ubiquitous HealthCare (Ubi-HealthTech)

作者： Ge Shi Shihong Zou Anpeng Huang BUPT State Key Laboratory of Networking and Switching Technology mHealth Lab Peking University

ISBN: (纸本)9781479961696

Up to today, there are around 400 million diabetics in the world. In China, there are more than 100 million diabetics. How to help them track and manage real-time glucose level is significant to control diabetic progression. As well known, the glucose level is directly related with food, while the conventional tracking glucose is depending invasive or minimally invasive methods. This phenomenon causes many problems to diabetics for food selection and glucose monitoring. To solve this challenge, we are motivated to propose a postprandial glucose prediction model, which can connect food selection and diabetic self-management seamlessly, without involving invasive glucose monitoring. In this paper, we first build up a glucose tracking system based on Android platform. And then, we conceive a postprandial glucose prediction model based on machine learning methods, in which sample data from diabetics' diet are collected and analyzed for predicting a postprandial glucose level of a user. To verify our model, we compared the prediction results with our clinical tests by using traditional glucose monitoring methods. In order to extract a reliable glucose prediction model, two kinds of linear regression algorithms are adopted, which confidence margin is bounded within 20% that matching with the FDA standard. Our experiment results show that this prediction-based glucose tracking system is helpful to diabetics, and can be used as an auxiliary tool to control their glucose and diet.

关键词： Sugar Diabetes Servers Blood Androids Humanoid robots Training

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Improving Dialogue Generation with Commonsense Knowledge Fusion and Selection 1

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15th International Conference on Knowledge Science, Engineering, and Management (KSEM)

作者： Fu, Dongjun Zhang, Chunhong Yu, Jibin Sun, Qi Zhan, Zhiqiang Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Key Lab Universal Wireless Commun Minist Educ Beijing 100876 Peoples R China

ISBN: (数字)9783031109836

ISBN: (纸本)9783031109836;9783031109829

Knowledge-aware dialogue generation aims to generate informative and meaningful responses with external knowledge. Existing works are still insufficient to encode retrieved knowledge regardless of the dialogue context, which probably leads to the introduction of irrelevant information. In this paper, we propose a dialogue generation model named CKFS-DG, which filters out context-irrelevant and off-topic knowledge to reduce the influence of redundant knowledge. Specifically, we design a knowledge-enriched encoder and a topic fact predictor to improve the quality of fusion knowledge. For achieve the knowledge-enriched encoder, we put forward a context-knowledge attention mechanism to dynamically filter out irrelevant knowledge conditioned on context. For the topic fact predictor, we utilize the probability distribution on retrieved facts to retain on-topic knowledge. The experimental results on English Reddit and Chinese Weibo dataset demonstrate that CKFS-DG outperforms the state-of-the-art neural generative methods in knowledge utilization, and CKFS-DG could reduce the influence of irrelevant knowledge to generate reasonable responses.

关键词： Dialogue generation Knowledge aware Knowledge selection Attention mechanism Topic prediction

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3D Torus ONoC: Topology Design, Router Modeling and Adaptive Routing Algorithm 13

3D Torus ONoC: Topology Design, Router Modeling and Adaptive...

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13th International Conference on Optical Communications and Networks (IEEE ICOCN)

作者： Hou, Weigang Guo, Lei Cai, Qing Zhu, Lijiao Northeastern Univ Coll Informat Sci & Engn Shenyang 110819 Peoples R China State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China

ISBN: (纸本)9781479972197

With the rapid development of electronic products, the high-speed computing and the personal mobile terminal all make greater demands the on-chip performance. Due to the limited bandwidth, the low communication efficiency and the bad scalability, the Network on Chip (NoC) has been unable to satisfy the requirements of the applications above. More recently, the Optical NoC (ONoC) is introduced as an efficient solution. Compared with NoC, ONoC has the higher bandwidth, the lower power consumption and the shorter latency. With the increasing number of IP cores on a single chip, the study of 3-Dimensional (3D) ONoC has already entered the preliminary stage. Thus in this paper, we design a new 3D ONoC topology structure called 3D X-Torus. Next, we design a bidirectional optical router and a vertical optical router for our topology. Finally, we propose the corresponding routing algorithm. Our simulation results demonstrate the performances of our 3D ONoC topology, optical router and routing algorithm.

关键词： Optical Network on Chip (ONoC) 3D ONoC topology optical router design and modeling routing algorithm

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Reliable and Efficient Multimedia Service Optimization for Edge Computing-Based 5G Networks: Game Theoretic Approaches

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IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT 2020年第3期17卷 1610-1625页

作者： Cao, Tengfei Xu, Changqiao Du, Junping Li, Yawen Xiao, Han Gong, Changhui Zhong, Lujie Niyato, Dusit Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Capital Normal Univ Informat Engn Coll Beijing 100048 Peoples R China Nanyang Technol Univ Sch Comp Sci & Engn Singapore 639798 Singapore

The edge computing-based 5G networks have the advantages in efficiently offloading the large-scale Internet traffic, which is considered to be a promising architecture to alleviate the conflict between transmission performance and quality of experience (QoE). However, due to the unreliability of service providers and the mutual interference between wireless channels in 5G networks, it is still difficult for existing solutions to provide satisfactory multimedia services for mobile users. In response to these crucial challenges, this paper proposes a reliable and efficient multimedia service optimization framework named "REMSO" hereby, including a two-stage joint optimization procedure. Specifically, a reliable video service mechanism is first constructed to help the mobile users distinguish the credible and economic service BSs. Afterwards, an efficient wireless resource allocation strategy is established to achieve low latency and energy efficient video service optimization. In particular, the Stackelberg and potential game models are leveraged to achieve these optimization objectives. Finally, extensive simulations corroborate that our REMSO framework can deliver prominent performance advantages in terms of the reliability and efficiency when comparing with the state-of-the-art solutions.

关键词： 5G mobile communication Resource management Optimization Reliability Games Pricing Wireless communication Multimedia services reliability efficiency 5G networks game theoretic

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CYBERSPACE SECURITY:FOR A BETTER LIFE AND WORK

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China Communications 2018年第2期15卷 I0002-I0002页

作者： Huanguo Zhan the state key laboratory of networking and switching technology beijing university of posts and telecommunications(bupt)

With the development and widespread application of information technology and industry,the human society has entered into the information age and people live and work in *** is the information environment in which man... 详细信息

关键词：空间安全生活电子信息时代信息技术信息系统信息环境子空间

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Modulation Adaptive Grooming in Green Elastic Optical Networks 14

Modulation Adaptive Grooming in Green Elastic Optical Networ...

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14th International Conference on Optical Communications and Networks

作者： Guo, Pengxing Hou, Weigang Wu, Jingjing Sun, Zhimin Northeastern Univ Coll Informat Sci & Engn Shenyang 110819 Peoples R China State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China

ISBN: (纸本)9781467373739

In order to mitigate the mismatch of granularities between fixed grid and client traffic demand, the elastic optical network (EON) was proposed by using orthogonal frequency division multiplexing (OFDM). Bandwidth variable (BV)-transponders consume more fixed power compared with ordinary ones, which will lead to a power-thirsty EON if we do not take any effective measures. Thus the green grooming was proposed for EONs. However, an adaptive multilevel modulation was neglected in the works focusing on green grooming. In this paper, we design a modulation adaptive grooming with guaranteeing transmission performances in green EONs. The simulation results demonstrate that the adaptive multilevel modulation plays a more important role on saving spectrum compared with improving power efficiency for the green grooming in EONs.

关键词： elastic optical network green grooming adaptive multilevel modulation

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Hierarchical Clustering of Group Behaviors in Cyber Situation Awareness 2

Hierarchical Clustering of Group Behaviors in Cyber Situatio...

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IEEE International Conference on Software Quality, Reliability and Security Companion (QRS-C)

作者： Zhang, Yan Liao, Lejian Xu, Chang Yang, Manzhi Beijing Inst Technol Sch Comp Sci & Technol Beijing Peoples R China Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing Peoples R China

ISBN: (纸本)9781509037131

In cyber situation awareness, top-down simulation for group behaviors of attacks are unsupported to simulate unknown cliques of attackers. To solve this issue, we believe that hierarchical group behaviors as an abstract data type (ADT) can be agglomerated by other behavior types, such as individual and subgroup behaviors with a bottom-up way. In this paper, we propose a hierarchical clustering algorithm according to theory of ADTs. Specifically, behavioral algebra acts as a formalization approach of hierarchical relationship. Because this proposed algorithm reduces the time complexity of existing hierarchical clustering, it can implement agglomeration of group behaviors for simulation.

关键词： Clustering algorithms

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Quality-driven Multi-hop LoRa Link Optimization Mechanism for Differentiated Services in Power IoT

Quality-driven Multi-hop LoRa Link Optimization Mechanism fo...

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2023 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2023

作者： Li, Zhiyi Wang, Yuqi Ye, Cong Li, Hongru Lei, Zile Shao, Sujie Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China Information & Communicatioon Company of State Grid Ningxia Electric Power Co. Ltd China

ISBN: (纸本)9798350321524

The power infrastructure in modern power grids shows a trend towards high integration. The forms of power service have also become diverse, and their needs are trending towards differentiation. LoRa, a low-power wide-area network (LPWAN) technology, is widely used in smart grid monitoring services. Multi-hop LoRa network is proven to improve transmission reliability and expand coverage area without adding extra gateways, and is widely used in many power scenarios. A link optimization mechanism that expands multi-hop LoRa network throughput while meeting the differentiated needs of services is needed to support stable and efficient operation of power IoT services. In this paper, we first establish the link model of multi-hop LoRa, which includes transmission rate model and packet loss rate model. They are both expressed by SF and number of hops. Then all the services are corresponded to SF and number of hops according to transmission rate and packet loss rate requirements. The problem is transformed into a K-coloring problem. STSAA (service-oriented tree-based SF allocation algorithm) algorithm is proposed for assigning one SF to each sensor in the multi-hop LoRa network, dividing the whole network into six subnets from SF7 to SF12. The algorithm allocates a reasonable capacity to each subnet based on transmission time, connectivity, and service demand distribution. And then depending on the type of service (i.e., guaranteed or best effort) different sensors are determined to draw off the initial network and join the new subnetwork process. Under the condition of ensuring connectivity, the proposed algorithm supports the differentiated demand of services and improves the overall throughput of the network. Finally, this paper verifies the throughput advantage of the proposed algorithm, especially in narrow spaces, by simulation experiments. © 2023 IEEE.

关键词： Wide area networks

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