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| 1 | Performance analysis and comparison of PoW,PoS and DAG based blockchains显示文摘In the blockchain,the consensus mechanism plays a key role in maintaining the security and legitimation of contents recorded in the blocks.Various blockchain consensus mechanisms have been proposed.However,there is no technical analysis and comparison as a guideline to determine which type of consensus mechanism should be adopted in a specific scenario/application.To this end,this work investigates three mainstream consensus mechanisms in the blockchain,namely,Proof of Work(PoW),Proof of Stake(PoS),and Direct Acyclic Graph(DAG),and identifies their performances in terms of the average time to generate a new block,the confirmation delay,the Transaction Per Second(TPS)and the confirmation failure probability.The results show that the consensus process is affected by both network resource(computation power/coin age,buffer size)and network load conditions.In addition,it shows that PoW and PoS are more sensitive to the change of network resource while DAG is more sensitive to network load conditions. | Bin Cao Zhenghui Zhang Daquan Feng Shengli Zhang Lei Zhang Mugen Peng Yun Li | 2020 | Digital Communications and Networks2020，6，4： | 15 |
| 2 | Edge computing technologies for Internet of Things: a primer显示文摘 | Yuan Ai Mugen Peng Kecheng Zhang | 2018 | Digital Communications and Networks2018，4，2： | 11 |
| 3 | Diffusion Based Molecular Communication:Principle,Key Technologies,and Challenges显示文摘Molecular communication(MC) is a kind of communication technology based on biochemical molecules for internet of bio-nano things, in which the biochemical molecule is used as the information carrier for the interconnection of nano-devices. In this paper, the basic principle of diffusion based MC and the corresponding key technologies are comprehensively surveyed. In particular, the state-ofthe-art achievements relative to the diffusion based MC are discussed and compared, including the system model, the system performance analysis with key influencing factors, the information coding and modulation techniques. Meanwhile, the multi-hop nano-network based on the diffusion MC is presented as well. Additionally, given the extensiveness of the research area, open issues and challenges are presented to spur future investigations, in which the involvement of channel model, information theory, self-organizing nano-network, and biochemical applications are put forward. | Jiaxing Wang Bonan Yin Mugen Peng | 2017 | China Communications2017，14，2： | 8 |
| 4 | Hierarchical Content Caching in Fog Radio Access Networks:Ergodic Rate and Transmit Latency显示文摘In order to alleviate capacity constraints on the fronthaul and decrease the transmit latency, a hierarchical content caching paradigm is applied in the fog radio access networks(F-RANs). In particular, a specific cluster of remote radio heads is formed through a common centralized cloud at the baseband unit pool, while the local content is directly delivered at fog access points with edge cache and distributed radio signal processing capability. Focusing on a downlink F-RAN, the explicit expressions of ergodic rate for the hierarchical paradigm is derived. Meanwhile, both the waiting delay and latency ratio for users requiring a single content are exploited. According to the evaluation results of ergodic rate on waiting delay, the transmit latency can be effectively reduced through improving the capacity of both fronthaul and radio access links. Moreover, to fully explore the potential of hierarchical content caching, the transmit latency for users requiring multiple content objects is optimized as well in three content transmission cases with different radio access links. The simulation results verify the accuracy of the analysis, further show the latency decreases significantly due to the hierarchical paradigm. | Shiwei Jia Yuan Ai Zhongyuan Zhao Mugen Peng Chunjing Hu | 2016 | China Communications2016，13，12： | 6 |
| 5 | Recent advances in Industrial Internet:insights and challenges显示文摘The Industrial Internet is a promising technology combining industrial systems with Internet connectivity to significantly improve the product efficiency and reduce production cost by cooperating with intelligent devices,in which the advanced computing,big data analysis and intelligent perception techniques have been involved.This paper comprehensively surveys the recent advances of the Industrial Internet,including reference architectures,key technologies,relative applications and future challenges.Reference architectures which have been proposed for different application scenarios and their corresponding characteristics are summarized.Key technologies,such as cloud computing,mobile edge computing,fog computing,which are classified according to different layers in the architecture,are presented to support a variety of applications in the Industrial Internet.Meanwhile,future challenges and research trends are discussed as well to promote further research of the Industrial Internet. | Wei Qin Siqi Chen Mugen Peng | 2020 | Digital Communications and Networks2020，6，1： | 4 |
| 6 | Unintentional forking analysis in wireless blockchain networks显示文摘The forking problem plays a key role in the security issue,which is a major concern in the blockchain system.Although many works studied the attack strategy,consensus mechanism,privacy-protecting and security performance analysis,most of them only address the intentional forking caused by a malicious attacker.In fact,without any attacker,unintentional forking still remains due to transmission delay and failure,especially in wireless network scenarios.To this end,this paper investigates the reason for generating unintentional forking and derives the forking probability expression in Wireless Blockchain Networks(WBN).Furthermore,in order to illustrate the unintentional forking on the blockchain system,the performances in terms of resource utilization rate,block generation time,and Transaction Per Second(TPS)are investigated.The numerical results show that the target difficulty of hash algorithm in generating a new block,the delay time of broadcasting,the network scale,and the transmission failure probability would affect the unintentional forking probability significantly,which can provide a reliable basis for avoiding forking to save resource consumption and improving system performance. | Qilie Liu Yinyi Xu Bin Cao Lei Zhang Mugen Peng | 2021 | Digital Communications and Networks2021，7，3： | 3 |
| 7 | Probe Selection for Over-the-Air Test in 5G Base Stations with Massive Multiple-Input Multiple-Output显示文摘In 5G systems, massive multiple-input multiple-output (MIMO) has been adopted in base stations (BSs) to improve spectral efficiency and coverage. The traditional conductive performance test techniques are challenging due to the unaffordable cost and high complexity when testing a large number of antennas. To solve this problem, the over-the-air (OTA) test has been presented, in which probe selection is the key to reduce the number of channel emulators and probes. In this paper, a novel artificial bee colony (ABC) algorithm is introduced to enhance the efficiency and accuracy of probe selection procedure. A sectoring- based multi-probe anechoic chamber (MPAC) is built to evaluate the throughput performance of massive MIMO equipped in 5G BS. In addition, link level simulation is carried out to evaluate the proposal’s performance gain under the commercial network assumptions, where the average throughput of three velocity is given with different SNR region. The results suggest that OTA chamber and multi-probe wall are available not only for 5G BSs, but also for user equipments (UEs) with end-to-end communication. | Xiang Zhang Shangbin Qiao Mugen Peng Yong Li | 2019 | China Communications2019，16，7： | 3 |
| 8 | Channel Estimation for Reconfigurable Intelligent Surface Assisted Wireless Communication Systems in Mobility Scenarios显示文摘Reconfigurable intelligent surface(RIS)can manipulate the wireless propagation environment by smartly adjusting the amplitude/phase in a programmable panel,enjoying the improved performance.The accurate acquisition of the instantaneous channel state information(CSI)in the cascaded RIS chain makes an indispensable contribution to the performance gains.However,it is quite challenging to estimate the CSI in a time-variant scenario due to the limited signal processing capability of the passive elements embedded in a RIS pannel.In this work,a channel estimation scheme for the RIS-assisted wireless communication system is proposed,which is demonstrated to perform well in a time-variant scenario.The cascaded RIS channel is modeled as a state-space model based upon the mobility situations.In addition,to fully exploit the time correlation of channel,Kalman filter is employed by taking the prior information of channels into account.Further,the optimal reflection coefficients are derived according to the minimum mean square error(MMSE)criterion.Numerical results show that the proposed methods exhibit superior performance if compared with a conventional channel estimation scheme. | Zhendong Mao Mugen Peng Xiqing Liu | 2021 | China Communications2021，18，3： | 3 |
| 9 | Intent-based networks for 6G:Insights and challenges显示文摘Intent-Based Networks(IBNs),which are originally proposed to introduce Artificial Intelligence(AI)into the sixth-generation(6G)wireless networks,can effectively solve the challenges of traditional networks in terms of efficiency,flexibility,and security.IBNs are mainly used to transform users’business intent into network configuration,operation,and maintenance strategies,which are prominent for designing the AI-enabled 6G networks.In particular,in order to meet the massive,intelligent service demands and overcome the time-varying radio propagation,IBNs can continuously learn and adapt to the time-varying network environment based on the massive collected network data in real-time.From the aspects of both the core network and radio access network,this article comprehensively surveys the architectures and key techniques of IBNs for 6G.In particular,the demonstration platforms of IBNs,such as the Apstra Operating System,Forward Networks Verification Platform,and One Convergence Service Interaction Platform,are presented.Moreover,the industrial development of IBNs is elaborated,including the emerging new products and startups to solve the problems of open data platforms,automated network operations,and preemptive network fault diagnosis.Finally,several open issues and challenges are identified as well to spur future researches. | Yiming Wei Mugen Peng Yaqiong Liu | 2020 | Digital Communications and Networks2020，6，3： | 3 |
| 10 | EDGE ARTIFICIAL INTELLIGENCE IN 6G SYSTEMS:THEORY,KEY TECHNIQUES,AND APPLICATIONS显示文摘As the permeation of artificial intelligence(AI)in wireless applications,some data-driven and computing-intensive services are emerging,such as mobile high-definition AR/VR,and real-time fingertip interactions.Moreover,the application scenarios have been extended to penetrate the vertical industry,which have multi-dimension and diverse quality of service(QoS)requirements.Recently,the research and the development of 6G have been triggered,and much higher QoS requirements of data rate,latency,and connectivity will be raised. | Zhongyuan Zhao Zhiguo Ding Tony Q.S.Quek Mugen Peng | 2020 | China Communications2020，17，8： | 2 |
| 11 | Virtualization Technology in Cloud Computing Based Radio Access Networks:A Primer显示文摘Since virtualization technology enables the abstraction and sharing of resources in a flexible management way, the overall expenses of network deployment can be significantly reduced. Therefore, the technology has been widely applied in the core network. With the tremendous growth in mobile traffic and services, it is natural to extend virtualization technology to the cloud computing based radio access networks(CCRANs) for achieving high spectral efficiency with low cost.In this paper, the virtualization technologies in CC-RANs are surveyed, including the system architecture, key enabling techniques, challenges, and open issues. The enabling key technologies for virtualization in CC-RANs mainly including virtual resource allocation, radio access network(RAN) slicing, mobility management, and social-awareness have been comprehensively surveyed to satisfy the isolation, customization and high-efficiency utilization of radio resources. The challenges and open issues mainly focus on virtualization levels for CC-RANs, signaling design for CC-RAN virtualization, performance analysis for CC-RAN virtualization, and network security for virtualized CC-RANs. | ZHANG Xian PENG Mugen | 2017 | ZTE Communications2017，15，4： | 2 |
| 12 | Adaptive Traffic Multiplexing for MBMS in the U MTS System Based on the Scalable Coding显示文摘 | Sheng Yu Peng Mugen Wang Wenbo | 2006 | CHINACOM2006，，： | 1 |
| 13 | Investigation of Uplink Admission Control Schemes for TDD-CDMA Systems显示文摘 | Mugen Peng Wei Bao Wenbo Wang | 2004 | IEEE2004，，： | 1 |
| 14 | Improved Coding-Rotated-Modulation Orthogonal Frequency Division Multiplexing System显示文摘 | WU Zhanji PENG Mugen WANG Wenbo | 2012 | IET Commun2012，6，3： | 1 |
| 15 | Effect of H-ARQ on Packet Call Throughput in UTRA TDD HSDPA显示文摘 | Peng Tao Peng Mugen | 2003 | Computer Science2003，25，24： | 1 |
| 16 | Technologies and standards for TD-SCDMA evolutions to IMT-Advanced显示文摘 | Mugen Peng Wenbo Wang | | 0，，12： | 1 |
| 17 | Investigation of capacity and call ad-mission control schemes in TD-SCDMA up-link systems employing smart antenna techniques 显示文摘 | Peng Mugen Wang Wenbo | 2010 | Wireless Communications & Mobile Com- puting2010，10，2： | 1 |
| 18 | System architecture and key technologies for 5G heterogeneous cloud radio access net- works显示文摘 | PENG Mugen LI Yong ZHAO Zhongyuan | 2015 | IEEE Network2015，29，2： | 1 |
| 19 | Training Design and Channel Estimation in Up- link Cloud Radio Access Networks显示文摘 | XIE Xinqian PENG Mugen WANG Wenbo | 2015 | IEEE Signal Processing Letters2015，22，8： | 1 |
| 20 | Novel approach for downlink capacity analysis in CDMA networks 显示文摘 | Peng Mugen Wang Wenbo | 2003 | PIMRC2003 Beijing China2003，2003，： | 1 |
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