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| 1 | Toward Wisdom-Evolutionary and Primitive-Concise 6G:A New Paradigm of Semantic Communication Networks显示文摘The sixth generation(6G)mobile networks will reshape the world by offering instant,efficient,and intelligent hyper-connectivity,as envisioned by the previously proposed Ubiquitous-X 6G networks.Such hyper-massive and global connectivity will introduce tremendous challenges into the operation and management of 6G networks,calling for revolutionary theories and technological innovations.To this end,we propose a new route to boost network capabilities toward a wisdom-evolutionary and primitive-concise network(WePCN)vision for the Ubiquitous-X 6G network.In particular,we aim to concretize the evolution path toward the WePCN by first conceiving a new semantic representation framework,namely semantic base,and then establishing an intelligent and efficient semantic communication(IE-SC)network architecture.In the IE-SC architecture,a semantic intelligence plane is employed to interconnect the semantic-empowered physical-bearing layer,network protocol layer,and application-intent layer via semantic information flows.The proposed architecture integrates artificial intelligence and network technologies to enable intelligent interactions among various communication objects in 6G.It features a lower bandwidth requirement,less redundancy,and more accurate intent identification.We also present a brief review of recent advances in semantic communications and highlight potential use cases,complemented by a range of open challenges for 6G. | Ping Zhang Wenjun Xu Hui Gao Kai Niu Xiaodong Xu Xiaoqi Qin Caixia Yuan Zhijin Qin Haitao Zhao Jibo Wei Fangwei Zhang | 2022 | Engineering2022，8，1： | 28 |
| 2 | A Joint Feedback Bit and Power Allocation Strategy for Multi-cell Systems over Composite Fading Channels显示文摘This paper addresses the joint Feedback bit allocation(FBA) and Power allocation(PA)problem for a limited feedback coordinated multi-cell transmission system over composite fading channels. The Rayleigh/Lognormal fading channel is considered, and the effects of path loss and the macro-level correlation are also taken into account. A modified performance measure, referred to as the virtual sum rate is adopted to facilitate the analysis. The closed forms of the lower bound on virtual sum rate are derived over uncorrelated and correlated shadowed fading channels. Based on the lower bound, we then formulate an optimization problem of maximizing the virtual sum rate under constraints on the total number of feedback bits per MS and the total transmit power per BS. Considering the tight coupling between the FBA and the PA, we solve the optimization problem by solving an alternating sequence of FBA and PA subproblems using a coordinated ascent searching method. Numerical results show that the proposed strategy can converge in a few iterations and generally yield better performance than the conventional FBA schemes under composite fading channels. | MA Yue WANG Xin WANG Haihong GE Songhu WEI Jibo | 2016 | Chinese Journal of Electronics2016，25，3： | 3 |
| 3 | Model-based approach for available bandwidth prediction in multi-hop wireless networks显示文摘We present a complete and practical analytical model for the IEEE 802.11-based multi-hop wireless networks.The features of our model are that it first takes into account the realistic problems both from the physical and MAC (Media Access Control) layers in multi-hop wireless networks,including packet collisions,neighboring interference,hidden node problems,capture effects,non-ideal channels,non-saturated situations and multi-rate sending scenarios,which makes the analytical results more accurate.Second,it relates the network parameters to the bandwidth requirements of flows and thus is capable of directly analyzing bandwidth-sensitive applications.Third,it provides a 'what-if' analysis,enabling us to predict the performance of the network after a new flow enters.Based on this model,we then present and validate iterative algorithms for end-to-end available bandwidth predictions.With the property of fast convergence and easy realization,these algorithms can give predictive estimates on the change of parameters that will affect the available bandwidth and thus enable us to obtain more accurate available bandwidth information. | ZHAO HaiTao WANG Shah WEI JiBo SONG An LI Ying | 2011 | Science China(Information Sciences)2011，54，9： | 3 |
| 4 | Effects of thiosulfate and dissolved oxygen on crevice corrosion of Alloy 690 in high-temperature chloride solution显示文摘The crevice corrosion behavior of Alloy 690 was investigated in high-temperature chloride solution containing different concentrations of thiosulfate(S_(2)O_(3)^(2-)) and dissolved oxygen(DO). The S2O32- inhibited corrosion of Alloy 690 through consuming oxygen in aerated chloride solution. In deaerated chloride solution,the S_(2)O_(3)^(2-) was reduced to S° and S^(2-) and subsequently incorporated into the oxide films, which promoted the pitting corrosion at locations of both TiN inclusions and matrix inside the crevice during the crevice corrosion as well as influenced the composition and thickness of the oxide films. The effect mechanisms of S_(2)O_(3)^(2-) and DO on crevice corrosion in high-temperature chloride solution are discussed. | Fangqiang Ning Jibo Tan Ziyu Zhang Xinqiang Wu Xiang Wang En-Hou Han Wei ke | 2021 | Journal of Materials Science & Technology2021，，7： | 2 |
| 5 | Low Complexity Semi-blind Bayesian Iterative Receiver for MIMO-OFDM Systems over Time-varying Multi-path Channels显示文摘 | XIONG Chunlin WANG Degang WEI Jibo | 2010 | Chinese Journal of Electronics2010，19，1： | 2 |
| 6 | Towards Wide-Open, Adaptable DCF Implementation for Dynamic Networks显示文摘This work proposes a Field Programmable Gate Array (FPGA)-oriented architecture for the IEEE 802. 11 Distributed Coordination Function (DCF) transceiver. We describe the functional blocks carrying out the Carrier Sense Multiple Accesses with Collision Avoidance (CSMA/CA), develop the interfaces to the application layer and the physical layer, and implement it on FPGA devices by utilizing Very-high-speed-integrated-circuit Hardware Description Language (VHDL). The novelty of our proposal is twofold. Firstly, all MAC parameters (i.e., Max/Min Contention Window, Data Unit Length, Fragmentation Threshold, Retry Limit, etc.) can be directly accessed and programmed from the application layer interface, which is necessary to achieve better network performance in dynamic environments. Secondly, the character based on FPGA makes the proposal more flexible and risk-reduced for the development of DCF-based wireless networks, such as MANETs and software-defined-radio-based cognitive ad hoc networks. | Wang Shan Abdelhakim Hafid Zhao Haitao Huang Shengchun Xieng Chunlin Wei Jibo | 2012 | China Communications2012，9，7： | 2 |
| 7 | Performance ff muhicarrier CDMA based on wavelet-packet transforming in a multipath channel 显示文摘 | WEI Jibo and CHENG Shixin | 1998 | Chinese Journal of Electronics1998，17，4： | 1 |
| 8 | Single-machine scheduling with time and resource dependent processing times显示文摘 | WEI Caimin WANG Jibo JI Ping | 2012 | Appl Math Model2012，36，： | 1 |
| 9 | Single-machine scheduling with time-and resource dependent processing times显示文摘 | WEI Caimin WANG Jibo JI Ping | 2012 | Appl Math Model2012，36，2： | 1 |
| 10 | Cooperative wireless networks for better green services显示文摘In order to guarantee the overall return on investment (ROI), improve user experience and quality of service (QoS), save energy, reduce electra magnetic interference (EMI) and radiation pollution, and enable the sustainable deployment of new profitable applications and services in heterogeneous wireless networks coexistence reality, this paper proposes a cross-network cooperation mechanism to effectively share network resources and infrastructures, and then adaptively control and match multi-network energy distribution characteristics according to actual user/service requirements in different geographic areas. Some idle or lightly-loaded base stations (BS or BSs) will be temporally turned off for saving energy and reducing EMI. Initial simulation results show that the proposed approach can significantly improve the overall energy efficiency and QoS performance across multiple cooperative wireless networks. | Yang Yang Zhang Wuxiong Hu Honglin Zhang Sihai Wang Xin Zhao Haitao Zhou Wuyang Wei Jibo | 2011 | Engineering Sciences2011，9，1： | 1 |
| 11 | WIDEBAND, INTELLIGENT AND INTEGRATED HF COMMUNICATIONS显示文摘The high-frequency(HF)communication,commonly covering the frequency range between 3 and30MHz,is an effective and important long-distance communication approach.Using the ionosphere as a natural high altitude reflector,trans-horizon HF radio transmission is possible with advantages such as high mobility,convenient deployment,strong survivability and | jinlong wang shaoqian li jibo wei | 2018 | China Communications2018，15，9： | 1 |
| 12 | Practical Timing and Frequency Synchronization for OFDM-Based Cooperative Systems 显示文摘 | HUANG Qinfei GHOGHO M WEI Jibo | 2010 | IEEE Transactions on Signal Processing2010，58，7： | 1 |
| 13 | Assessing the Forecasting of Comprehensive Loss Incurred by Typhoons:A Combined PCA and BP Neural Network Model显示文摘This paper develops a joint model utilizing the principal component analysis(PCA)and the back propagation(BP)neural network model optimized by the Levenberg Marquardt(LM)algorithm,and as an application of the joint model to investigate the damages caused by typhoons for a coastal province,Fujian Province,China in 2005-2015(latest).First,the PCA is applied to analyze comprehensively the relationship between hazard factors,hazard bearing factors and disaster factors.Then five integrated indices,overall disaster level,typhoon intensity,damaged condition of houses,medical rescue and self-rescue capability,are extracted through the PCA;Finally,the BP neural network model,which takes the principal component scores as input and is optimized by the LM algorithm,is implemented to forecast the comprehensive loss of typhoons.It is estimated that an average annual loss of 138.514 billion RMB occurred for 2005-2015,with a maximum loss of 215.582 in 2006 and a decreasing trend since 2010 though the typhoon intensity increases.The model was validated using three typhoon events and it is found that the error is less than 1%.These results provide information for the government to increase medical institutions and medical workers and for the communities to promote residents’self-rescue capability. | Shuai Yuan Guizhi Wang Jibo Chen Wei Guo | 2019 | Journal on Artificial Intelligence2019，1，2： | 1 |
| 14 | Practical timing and frequency synchronization for OFDM-based cooperative systems显示文摘 | Qinfei Huang Mounir Ghogho Jibo Wei Philipe Ciblat | 2010 | IEEE Transaction on Signal Processing2010，07，56： | 1 |
| 15 | Joint Network and Fountain Codes Design for RelayAssisted Multi-User System显示文摘In relay-assisted multi-user system, relay coding is important to enhance the robustness and reliability of cooperative transmission. For better adaptability and efficiency, two joint network and fountain coding(JNFC) schemes are proposed. When the condition of all direct channels is worse, JNFC scheme based on distributed LT(DLT) codes is used. Otherwise, JNFC scheme based on multi-dimensional LT(MD-LT) codes is suited. For both two above-mentioned schemes, the united degree distribution design method for short-length fountain codes is proposed. For the latter scheme, MD-LT codes are proposed for equal error protection(EEP) of each user. Simulation results and analysis show that the united degree distribution need less decoding overhead compared with other degree distribution for short-length fountain codes. And then, all users are protected equally in despite of asymmetric uplinks. | HUANG Ying LEI Jing WEI Jibo | 2015 | China Communications2015，12，7： | 1 |
| 16 | Outage Probability of MRC Diversity over Correalted Shadowed Fading Channels显示文摘 | ZHANG Rui WEI Jibo MICHELSON D G | 2012 | IEEE Wireless Communications Letters2012，1，5： | 1 |
| 17 | RATE ADAPTIVE PROTOCOL FOR MULTIRATE IEEE 802.11 NETWORKS显示文摘In this paper, a rate adaptive protocol AMARF (Adaptive Multirate Auto Rate Fallback) for multirate IEEE 802.11 networks is proposed. In AMARF, each data rate is assigned a unique success threshold, which is a criterion to judge when to switch a rate to the next higher one, and the success thresholds can be adjusted dynamically in an adaptive manner according to the running conditions, such as packet length and channel parameters. Moreover, the proposed protocol can be implemented by software without any change to the current IEEE 802.11 standards. Simulation result shows that AMARF yields significantly higher throughput than other existing schemes including ARF and its variants, in various running conditions. | Xi Yong Huang Qingyan Wei Jibo Zhao Haitao | 2007 | Journal of Electronics(China)2007，24，3： | 1 |
| 18 | An Optimal Time Spread Multiple Access Scheduling Policy for Ad Hoc Networks显示文摘 | LI Wei WANG Shan WEI Jibo | 2009 | Chinese Journal of Electronics2009，18，1： | 1 |
| 19 | Multiple symbol differential detection based on sphere decoding for unitary space-time modulation显示文摘Recently, a multiple symbol differential (MSD) sphere decoding (SD) algorithm for unitary space-time modulation over quasi-static channel has been proved to achieve the performance of maximum-likelihood (ML) detection with relatively low complexity. However, an error floor occurs if the algorithm is applied over rapid-fading channels. Based on the assumption of continuous fading, a multiple symbol differential automatic sphere decoding (MSDASD) algorithm is developed by incorporating a recursive form of an ML metric into automatic SD (ASD) algorithm. Furthermore, two algorithms, termed as MSD approximate ASD (MSDAASD) and MSD pruning ASD (MSDPASD), are proposed to reduce computational complexity and the number of comparisons, respectively. Compared with the existing typical algorithms, i.e., multiple symbol differential feedback detection (MS-DFD) and noncoherent sequence detection (NSD), the performance of the proposed algorithms is much superior to that of MS-DFD and a little inferior to that of NSD, while the complexity is lower than that of MS-DFD in most cases and significantly lower than that of NSD. | LI Ying WEI JiBo WANG Xin YU Quan | 2009 | Science in China(Series F)2009，52，1： | 1 |
| 20 | PFQ-OS: A Packet Fair Queueing Based Opportunistic Scheduler in Wireless Networks显示文摘 | WU Yu XI Yong KIM Byungseo WEI Jibo | 2008 | Chinese Journal of Electronics2008，17，2： | 0 |
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