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| 1 | Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘The fifth generation(5G)wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized,such as mass connectivity,ultra-reliability,and guaranteed low latency.However,5G will not meet all requirements of the future in 2030 and beyond,and sixth generation(6G)wireless communication networks are expected to provide global coverage,enhanced spectral/energy/cost efficiency,better intelligence level and security,etc.To meet these requirements,6G networks will rely on new enabling technologies,i.e.,air interface and transmission technologies and novel network architecture,such as waveform design,multiple access,channel coding schemes,multi-antenna technologies,network slicing,cell-free architecture,and cloud/fog/edge computing.Our vision on 6G is that it will have four new paradigm shifts.First,to satisfy the requirement of global coverage,6G will not be limited to terrestrial communication networks,which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV)communication networks,thus achieving a space-airground-sea integrated communication network.Second,all spectra will be fully explored to further increase data rates and connection density,including the sub-6GHz,millimeter wave(mmWave),terahertz(THz),and optical frequency bands.Third,facing the big datasets generated by the use of extremely heterogeneous networks,diverse communication scenarios,large numbers of antennas,wide bandwidths,and new service requirements,6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI)and big data technologies.Fourth,network security will have to be strengthened when developing 6G networks.This article provides a comprehensive survey of recent advances and future trends in these four aspects.Clearly,6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears. | Xiaohu YOU Cheng-Xiang WANG Jie HUANG Xiqi GAO Zaichen ZHANG Mao WANG Yongming HUANG Chuan ZHANG Yanxiang JIANG Jiaheng WANG Min ZHU Bin SHENG Dongming WANG Zhiwen PAN Pengcheng ZHU Yang YANG Zening LIU Ping ZHANG Xiaofeng TAO Shaoqian LI Zhi CHEN Xinying MA Chih-Lin I Shuangfeng HAN Ke LI Chengkang PAN Zhimin ZHENG Lajos HANZO Xuemin(Sherman)SHEN Yingjie Jay GUO Zhiguo DING Harald HAAS Wen TONG Peiying ZHU Ganghua YANG Jun WANG Erik GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG | 2021 | Science China(Information Sciences)2021，64，1： | 122 |
| 2 | Key techniques for 5G wireless communications:network architecture, physical layer,and MAC layer perspectives显示文摘The fourth generation(4G) mobile communication systems are offering service worldwide steadily.Although 4G systems could be loaded with much more services and data than previous systems, there is still a dramatic gap between the people's practical requirements and what can be offered by the 4G technologies.Consequently, the research and development for the fifth generation(5G) systems have already been started. This article presents an overview of potential network architecture and highlights several promising techniques which could be employed in the future 5G systems. These techniques include non-orthogonal multiple access(NOMA),massive multiple input and multiple output(MIMO), cooperative communications and network coding, full duplex(FD), device-to-device(D2D) communications, millimeter wave communications, automated network organization, cognitive radio(CR), and green communications. The state-of-art and implementation issue of these techniques are also addressed. | MA Zheng ZHANG ZhengQuan DING ZhiGuo FAN PingZhi LI HengChao | 2015 | Science China(Information Sciences)2015，58，4： | 49 |
| 3 | NEURO-COGNITIVE MECHANISMS UNDERLYING THE EMOTIONAL MODULATION OF WORD READING显示文摘A novel neural model for emotional modulation of word reading is proposed. This model has four principal hypotheses: the dominant activa-tion region hypothesis, the emotional modulation hypothesis, the attentional level hypothesis, and the interaction hypothesis. Four lines of research were reviewed to provide evidence for these hypotheses: (1) neuro-cognitive studies on the mechanisms of word reading (i.e., neural networks for reading); (2) studies on the influence of words’ emotional valence on word reading; (3) studies of the effect of attention on word reading; and (4) studies on emotional modulation of word reading under different attentional levels. | PENG Danling HU Zhiguo LIU Hongyan LIU Conghui DING Guosheng | 2006 | Chinese Science Bulletin2006，51，4： | 12 |
| 4 | Surface pollen assemblages of human-disturbed vegetation and their relationship with vegetation and climate in Northeast China显示文摘Pollen assemblages of 53 surface pollen samples from farmlands and wastelands in Northeast China were analyzed. Tree pollen percentages were usually higher than 30%, with Pinus (26.9%), Quercus (0.9%), Betula (0.9%) and Populus (0.7%) as the major types, and herb pollen percentages were usually higher than 50%, with weedy Poaceae (8.7%), Chenopodiaceae (7.1%), Artemisia (1.9%) and Compositae (3.5%) as the major taxa. Thus, the pollen assemblages were consistent with the regional vegetation compositions. However, there were differences in pollen assemblages among regions, especially among different geomorphological units. For example, in the mountains, there were more types of tree pollen and higher total percentages (average 42%) than in other areas, while cereal pollen percentages were lowest (11.2%). In the hills and high plains, herbs made up more than 60% of the pollens, with cereals (average 53.6%) the dominant type. In the low plains, pollen types were similar to those in the hills and high plains, but total pollen concentrations and the proportion of Concentricystes were much higher, while cereal pollen percentages were slightly lower (average 41.6%). Pollen assemblages in different land use types also differed. For example, in farmland, cereal pollen percentages were more than 40% and Chenopodiaceae was usually less than 2.5%, while in wasteland, weedy Poaceae was usually less than 10% and Chenopodiaceae was usually higher than 25%. Total pollen concentrations in farmland (average 3909 grains/g) were much lower than in wasteland (average 15074 grains/g). Redundancy analysis revealed that pollen assemblages were significantly negatively correlated with mean annual temperature (-0.73) and July mean temperature (-0.81) and significantly positively correlated with mean annual precipitation (0.48), indicating that pollen assemblages in the artificial or human-disturbed vegetation reflect regional climate well. Comparison of pollen assemblages in different areas of northern China showed that pollen concentrations reflect the intensities of human impact to some degree. For example, pollen concentrations decrease as human impacts increase in intensity. The cereal pollen proportions in farmland differed by area. In Northeast China, cereal pollen proportions were distinctly higher than in most other areas of northern China, suggesting differences in planting habits and climate. | LI ManYue LI YueCong XU QingHai PANG RuiMing DING Wei ZHANG ShengRui HE ZhiGuo | 2012 | Chinese Science Bulletin2012，57，5： | 10 |
| 5 | A Survey of Downlink Non-Orthogonal Multiple Access for 5G Wireless Communication Networks显示文摘Non-orthogonal multiple access(NOMA) has been recognized as a promising multiple access technique for the next generation cellular communication networks. In this paper, we first discuss a simple NOMA model with two users served by a single-carrier simultaneously to illustrate its basic principles. Then, a more general model with multicarrier serving an arbitrary number of users on each subcarrier is also discussed. An overview of existing works on performance analysis, resource allocation, and multiple-in-put multiple-output NOMA are summarized and discussed. Furthermore, we discuss the key features of NOMA and its potential research challenges. | WEI Zhiqiang YUAN Jinhong Derrick Wing Kwan Ng Maged Elkashlan DING Zhiguo | 2016 | ZTE Communications2016，14，4： | 8 |
| 6 | In vitro effect of iASPP on cell growth of oral tongue squamous cell carcinoma显示文摘iASPP is an inhibitory member of the apoptosis-stimulating proteins of P53(ASPP) family. iASPP is over expressed in several malignant tumors and potentially affects cancer progression. However, the expression and potential role of iASPP in oral tongue squamous cell carcinoma(OTSCC) have not been addressed. In our study, we detected iASPP expression in OTSCC by immunohistochemistry. iASPP expression is up-regulated in OTSCC tissues. Moreover, in clinical pathology specimens, we found that increased iASPP expression correlates with poor differentiation and lymph node metastasis. Using multicellular tumor spheroids(MTS) and flow cytometry, we demonstrated that iASPP down-regulation arrests OTSCC cells at the G0/G1 phase, induces OTSCC cell apoptosis and inhibits OTSCC cell proliferation. These results indicate that iASPP plays a significant role in the progression of OTSCC and may serve as a biomarker or therapeutic target for OTSCC patients. | Yu Chen Wangxiang Yan Shuqi He Jiechun Chen Dan Chen Zhaoqiang Zhang Zhiguo Liu Xueqiang Ding Anxun Wang | 2014 | Chinese Journal of Cancer Research2014，26，4： | 7 |
| 7 | Joint resource allocation for hybrid NOMA-assisted MEC in 6G networks显示文摘Multi-access Edge Computing(MEC)is an essential technology for expanding computing power of mobile devices,which can combine the Non-Orthogonal Multiple Access(NOMA)in the power domain to multiplex signals to improve spectral efficiency.We study the integration of the MEC with the NOMA to improve the computation service for the Beyond Fifth-Generation(B5G)and the Sixth-Generation(6G)wireless networks.This paper aims to minimize the energy consumption of a hybrid NOMA-assisted MEC system.In a hybrid NOMA system,a user can offload its task during a time slot shared with another user by the NOMA,and then upload the remaining data during an exclusive time duration served by Orthogonal Multiple Access(OMA).The original energy minimization problem is non-convex.To efficiently solve it,we first assume that the user grouping is given,and focuses on the one group case.Then,a multilevel programming method is proposed to solve the non-convex problem by decomposing it into three subproblems,i.e.,power allocation,time slot scheduling,and offloading task assignment,which are solved optimally by carefully studying their convexity and monotonicity.The derived solution is optimal to the original problem by substituting the closed expressions obtained from those decomposed subproblems.Furthermore,we investigate the multi-user case,in which a close-to-optimal algorithm with lowcomplexity is proposed to form users into different groups with unique time slots.The simulation results verify the superior performance of the proposed scheme compared with some benchmarks,such as OMA and pure NOMA. | Haodong Li Fang Fang Zhiguo Ding | 2020 | Digital Communications and Networks2020，6，3： | 3 |
| 8 | Ion association tailoring SEI composition for Li metal anode protection显示文摘Electrolyte additives play an important role in suppressing lithium dendrites through tailoring the composition/property of the SEI,however lacking of additives can achieve high performances both in ether and carbonate electrolytes hinders further enhancement of the high voltage lithium^-metal batteries.Here,lithium perchlorate(LiClO4)has been presented as an excellent additive to meet the above requirements.An optimized chemical composition of SEI can be achieved through the formation of ionic association.Our results indicate that the LiClO4 behaves like a catalyst,which promotes LiTFSI to form a better SEI to inhibit further reaction.Superior coulombic efficiencies and cycling performances were obtained both in ether and carbonate electrolytes.This study paves a new pathway for designing bi-soluble additives for safe lithium metal batteries. | Yitao He Yaohui Zhang Peng Yu Fei Ding Xifei Li Zhihong Wang Zhe Lv Xianjie Wang Zhiguo Liu Xiqiang Huang | 2020 | Journal of Energy Chemistry2020，29，6： | 2 |
| 9 | 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 |
| 10 | Joint Synchronization and1 localization Using TO As: A Linearization Based WLS So-lution显示文摘 | ZHU Shouhong DING Zhiguo | 2010 | IEEE Journal on Selected Areas in Communi-cation2010，28，7： | 1 |
| 11 | Hybrid fiber influence on strength and toughness of RC beams显示文摘 | Yining Ding Zhiguo You Said Jalali | 2009 | Composite Structures2009，，9： | 1 |
| 12 | Nitric oxide mediates abscisic acid induced thermotolerance in the calluses from two ecotypes of reed under heat stress显示文摘 | Lili Song Wei Ding Juan Shen Zhiguo Zhang Yurong Bi Lixin Zhang | 2008 | Plant Science2008，，6： | 1 |
| 13 | On the study of network coding with diversity显示文摘 | DING Zhiguo LEUNG K K GOECKEL D L | 2009 | IEEE Transactions on Wireless Communications2009，8，3： | 1 |
| 14 | Maternal heterozygous mutation in CHEK1 leads to mitotic arrest in human zygotes显示文摘Dear Editor,The first mitotic division in zygotes is crucial for the beginning of the life cycle for the human.After fertilization,zygotes reactivate cell cycle,both paternal and maternal genomes replicate and reprogram to become totipotent.In the meantime,the male and female pronucleus move to the center of the zygote and merge.Then zygotes enter the metaphase,and sister chromatids separate into two daughter cells(Eckersley-Maslin et al.,2018;Reichmann et al.,2018).This is a sensitive time window and many perturbances may cause the first mitosis to fail. | Beili Chen Jianying Guo Ting Wang Qianhui Lee Jia Ming Fangfang Ding Haitao Li Zhiguo Zhang Lin Li Yunxia Cao Jie Na | 2022 | Protein & Cell2022，13，2： | 1 |
| 15 | Development of a micro-X-ray fluorescence system based on polycapillary X-ray optics for non-destructive analysis of archaeological objects显示文摘 | Cheng Lin Ding Xunliang Liu Zhiguo | 2007 | Spectrochimica Acta Part B2007，62，8： | 1 |
| 16 | Hybrid fiber influence on strength and toughness of RC beams 显示文摘 | Ding Yining You Zhiguo Jalali S | 2010 | Composite Structures2010，92，9： | 1 |
| 17 | The composite effect of steel fibres and stirrups on the shear behaviour of beams using self-consolidating concrete显示文摘 | Ding Yining You Zhiguo Jalali S | 2011 | Engineering Struetmes2011，33，1： | 1 |
| 18 | On the performance of opportunistic cooperative wireless networks 显示文摘 | Ding Zhiguo Gong Yu Ratnarajah T | 2008 | IEEE Trans on Communications2008，56，8： | 1 |
| 19 | Active device detection and performance analysis of massive non-orthogonal transmissions in cellular Internet of Things显示文摘This paper investigates multiple access schemes for uplink and downlink transmissions in cellular networks with massive Internet of Things(IoT) devices. Recall that single-carrier frequency division multiple access and orthogonal frequency division multiple access, which are orthogonal multiple access(OMA) schemes, have been conventionally adopted for uplink and downlink transmissions in narrow-band IoT, respectively. Unlike these OMA schemes, we propose two non-orthogonal multiple access(NOMA)schemes for cellular IoT with short-packet transmissions. Especially, a generalized expectation consistent signal recovery-based algorithm is proposed to estimate active devices, channel state information and data in uplink transmission, where all of the active devices are allowed to transmit their pilots and data through the same resource block without authorization. On the other hand, the active devices estimated during uplink transmission are grouped for downlink transmission with a trade-off between performance and detection complexity. Additionally, the data error rates are analysed for both uplink and downlink transmissions with low-resolution analog-to-digital converters(ADCs), where the effects of critical parameters such as the estimation error, ADC bits, packet length, and message bits are revealed. Both simulation and analytical results are provided to demonstrate the excellent performance of the proposed NOMA schemes and algorithms, especially for active device, channel, and data estimations. More importantly, the obtained results show that the data error rate performance of downlink NOMA is superior to that of OMA when the message bits of devices in one group are selected following the proposed strategy. | Donghong CAI Pingzhi FAN Qiuyun ZOU Yanqing XU Zhiguo DING Zhiquan LIU | 2022 | Science China(Information Sciences)2022，65，8： | 1 |
| 20 | Spectral and energy efficiency analysis for massive MIMO multi-pair two-way relaying networks under generalized power scaling显示文摘In this work, we investigate the spectral efficiency(SE) and energy efficiency(EE) for a massive multiple-input multiple-output multi-pair two-way amplify-and-forward relaying system, where multi-pair users exchange information via a relay station equipped with large scale antennas. We assume that imperfect channel state information is available and maximum-ratio combining/maximum-ratio transmission beamforming is adopted at the relay station. Considering constant or scaled transmit power of pilot sequences, we quantify the asymptotic SE and EE under general power scaling schemes, in which the transmit power at each user and relay station can both be scaled down, as the number of relay antennas tends to infinity. In addition, a closed-form expression of the SE has been obtained approximately. Our results show that by using massive relay antennas, the transmit power at each user and the relay station can be scaled down, with a non-vanishing signal to interference and noise ratio(SINR). Finally, simulation results confirm the validity of our analysis. | Jing YANG Hongyan WANG Jie DING Xiqi GAO Zhiguo DING | 2017 | Science China(Information Sciences)2017，60，10： | 1 |
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