|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Geometric Mean Decomposition Based Hybrid Precoding for Millimeter-Wave Massive MIMO显示文摘Hybrid precoding can reduce the number of required radio frequency(RF)chains in millimeter-Wave(mmWave) massive MIMO systems. However, existing hybrid precoding based on singular value decomposition(SVD) requires the complicated bit allocation to match the different signal-to-noise-ratios(SNRs) of different sub-channels. In this paper,we propose a geometric mean decomposition(GMD)-based hybrid precoding to avoid the complicated bit allocation. Specifically,we seek a pair of analog and digital precoders sufficiently close to the unconstrained fully digital GMD precoder. To achieve this, we fix the analog precoder to design the digital precoder, and vice versa. The analog precoder is designed based on the orthogonal matching pursuit(OMP) algorithm, while GMD is used to obtain the digital precoder. Simulations show that the proposed GMD-based hybrid precoding achieves better performance than the conventional SVD-based hybrid precoding with only a slight increase in complexity. | Tian Xie Linglong Dai Xinyu Gao Muhammad Zeeshan Shakir Jianjun Li | 2018 | China Communications2018，15，5： | 17 |
| 2 | Recent area and ice volume change of Kangwure Glacier in the middle of Himalayas显示文摘This paper calculated and evaluated the area and ice volume changes of Kangwure Glacier in Mt.Xixiabangma,middle of Himalayas in the past 3 decades,based on the field survey of glacier boundary position by differential GPS and glacier depth by Ground Penetrating Radar(GPR),together with the topographic map and remote sense data.The studied data showed that the Kangwure Glacier has experienced significant mass deficit since the 1970s,with 34.2%of area loss,48.2%ofice volume loss and 7.5 m of average thickness decrease.This result revealed that the ice volume loss of Himalayan glaciers was more serious than expected.Analysis of meteorological data from two weather stations in the region of Mt.Xixiabangma,shows that the air temperature of this region has risen from the middle of the 20th century to the beginning of the 21st century.Significant retreat of Himalayas glacier driven by climatic warming will have a remarkable impact on hydrology and ecosystem. | MA LingLong TIAN LiDe PU JianChen WANG PengLing | 2010 | Chinese Science Bulletin2010，55，20： | 17 |
| 3 | Quick ice mass loss and abrupt retreat of the maritime glaciers in the Kangri Karpo Mountains, southeast Tibetan Plateau显示文摘The maritime glaciers are sensitive to climate change because of high annual precipitation and high air temperature in the region. A combined comprehensive study was carried out based on glacier mass balance observation, GPS-based glacier terminus position survey, glacier Ground Penetrating Radar, topography maps and RS satellite images in the Kangri Karpo Mountains, Southeast Tibet. The study revealed a strong ice mass loss and quick glacier retreat since the 1970s. Ata Glacier, one glacier from the south slope of the Kangri Karpo Mountains, has formed a 6-km-long terminal moraine zone at the end of the glacier since the 1970s, and the accelerating retreat is largely due to the strong glacier sur- face melting. Mass balance study on the other four glaciers on the northern side of the Kangri Karpo Mountains shows that they are in large negative mass balance and the glaciers had retreated 15―19 m from May 2006 to May 2007. The in-situ glacier observation also shows that the glacier retreat is more obvious in small glaciers. The enhanced ice mass deficit caused by climate warming and the ongoing extinction of many small glaciers in this region could seriously affect the water resources, environ- ments, local climate and regional sustainable development in the near future. | YANG Wei YAO TanDong XU BaiQing WU GuangJian MA LingLong XIN XiaoDong | 2008 | Chinese Science Bulletin2008，53，16： | 11 |
| 4 | A^200 ka pollen record from Okinawa Trough:Paleoenvironment reconstruction of glacial-interglacial cycles显示文摘Pollen analysis was carried out on the Core MD982194 of 29.78 m retrieved from the Middle Okinawa Trough which was dated as old as^200 ka BP.The results revealed that pollen assemblages mainly presented an alternation of coniferous and herb pollen.The coniferous saccate pollen,principally Pinus and Tsuga,predominated in most parts of the core,especially highlighted in the interstadial stages including MIS 1,3,5 and MIS7,whereas the herb pollen significantly increased in the glacial periods.Thus the pollen flora and their percentages showed the sensitive changes under the influence of ice volume during the glacial and interglacial periods.Our record from this core has first documented that the percentage of Cyperaceae was extremely high in the glacial stages with a notable increase in Artemisia,Gramineae,Asteraceae,Chenopodiaceae,and freshwater algae,which can be used as a proxy for sea-level change at the study site because of their close negative correlation of the orbital-scale changes in sea level.The distance between the continental coastline and the Okinawa Trough has deeply shortened due to the sea-level drop in the LGM.As a result,the sediment materials from Yangtze River were extensively deposited on the flat,exposed continental shelf owing to the rapid decline of river flow speed,leading to that pollen grains from Okinawa Trough are derived mainly from the flat coastal vegetation of exposed continental shelf at glacial stages.Changes of pollen assemblage were consistent with the variation of temperature and humidity,which showed that the percentage of arboreal pollen was highly augmented at MIS 7,5 and MIS 1,corresponding to the strengthening of the East Asian summer monsoon and increasing of rainfall.Moreover,the peak of Pinus percentage in MIS 5.3,5.1 and MIS 3.3 may be closely linked by orbital and sub-orbital cycles of solar radiation and monsoonal variability.The present study of core MD981294 implied lower temperature and precipitation during the lowest sea-level stage(LGM),and more visibly testified that the vegetation of the flat plain on the exposed continental shelf was dominated by intrazonal communities such as halophyte grasslands and freshwater wetlands instead of zonal steppe or semi-arid desert.All above evidence demonstrated that the fundamental changes of pollen assemblage and their origins in Okinawa Trough since^200 ka BP were affected by combine factors including the coastline position and climate fluctuation.Moreover,the substantial shortening of distance between shoreline and the Okinawa Trough driven by orbital insolation cycles was clearly indicated by the pollen spectra,whereas the source-area climate signal of the pollen record was largely weakened. | ZHENG Zhuo HUANG KangYou DENG Yun CAO LingLong YU ShaoHua Jean-Pierre SUC Serge BERNE Franois GUICHARD | 2013 | Science China Earth Sciences2013，56，10： | 11 |
| 5 | Characteristics of recent temperate glacier fluctuations in the Parlung Zangbo River basin,southeast Tibetan Plateau显示文摘Little is known about recent variation of temperate glaciers on the Tibetan Plateau,although they are of particular theoretical and practical interests in terms of climate change and water supply.The study of glacier mass balance and terminus variation for six temperate glaciers in the Parlung Zangbo River basin,southeast Tibetan Plateau,shows the facts of the overall negative mass balance and the continued terminus retreat from 2005/2006 to 2007/2008.The mass balances of smaller glaciers were more negative compared to larger glaciers.Referring the trend of glacier mass balance in the Hengduan Mountains,the Himalayas and glacier shrinkage in southeast Tibetan Plateau,the mass loss and recession of temperate glacier in this region are expected if the current climate condition continues. | YANG Wei YAO TanDong XU BaiQing MA LingLong WANG ZhiHui WAN Ming | 2010 | Chinese Science Bulletin2010，55，20： | 11 |
| 6 | Seasonal variations of stable isotope in precipitation and moisture transport at Yushu,eastern Tibetan Plateau显示文摘Precipitation δ 18O at Yushu, eastern Tibetan Plateau, shows strong fluctuation and lack of clear seasonality. The seasonal pattern of precipitation stable isotope at Yushu is apparently different from either that of the southwest monsoon region to the south or that of the inland region to the north. This different seasonal pattern probably reflects the shift of different moisture sources. In this paper, we present the spatial comparison of the seasonal patterns of precipitation δ 18O, and calculate the moisture transport flux by using the NCAR/NCEP reanalysis data. This allows us to discuss the relation between moisture transport flux and precipitation δ 18O. This study shows that both the southwest monsoon from south and inland air mass transport from north affected the seasonal precipitation δ 18O at Yushu, eastern Tibetan Plateau. Southwest monsoon brings the main part of the moisture, but southwest transport flux is weaker than in the southern part of the Tibetan Plateau. However, contribution of the inland moisture from north or local evaporation moisture is enhanced. The combined effect is the strong fluctuation of summer precipitation δ 18O at Yushu and comparatively poor seasonality. | TIAN LiDe MA LingLong YU WuSheng LIU ZhongFang YIN ChangLiang ZHAO ZhongPing TANG Wei WANG Yu | 2008 | Science China Earth Sciences2008，51，8： | 9 |
| 7 | GSDME enhances Cisplatin sensitivity to regress non-small cell lung carcinoma by mediating pyroptosis to trigger antitumor immunocyte infiltration显示文摘Dear Editor,Non-small cell lung cancer(NSCLC)is the most common type of lung cancers.Since the majority of NSCLC patients are diagnosed at the advanced stage with a dramatic impact on the prognosis,chemotherapy is still the mainstay of treatment.Cisplatin(CDDP)remains one of the most widely used first-line drugs in the therapy of NSCLC,based on the clinical data that the poor outcomes of untreated NSCLC patients(5%overall survival at 1 year)have shown improvements in natural history of disease after CDDPbased chemotherapy(15%overall survival at 1 year).1 Nevertheless,Cisplatin has strong toxic side effects and many NSCLC patients treated with CDDP are easy to occur drug insensitivity,near-to-invariably leading to relapse and therapeutic failure.Therefore,finding novel target molecules which can regulate CDDP innate sensitivity is vital to improve clinical efficacy.For decades,a long-held consensus is that caspases-3-induced apoptosis is the major pattern for antitumor role of CDDP.The CDDP can promote cancer cell elimination via rewiring proproliferative signaling to pro-apoptotic pathway.However,apoptosis resistance readily occurs after CDDP treatment and it is of great significance to explore whether other types of programmed cell death can effectively heighten innate CDDP sensitivity. | Zhouyangfan Peng Pengfei Wang Wei Song Qingmei Yao Yinjia Li Linglong Liu Yapei Li Sufang Zhou | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 7 |
| 8 | Codebook Design and Beam Training for Extremely Large-Scale RIS:Far-Field or Near-Field?显示文摘Reconfigurable intelligent surface(RIS)is more likely to develop into extremely large-scale RIS(XL-RIS)to efficiently boost the system capacity for future 6 G communications.Beam training is an effective way to acquire channel state information(CSI)for XL-RIS.Existing beam training schemes rely on the far-field codebook.However,due to the large aperture of XL-RIS,the scatters are more likely to be in the near-field region of XL-RIS.The far-field codebook mismatches the near-field channel model.Thus,the existing far-field beam training scheme will cause severe performance loss in the XL-RIS assisted nearfield communications.To solve this problem,we propose the efficient near-field beam training schemes by designing the near-field codebook to match the nearfield channel model.Specifically,we firstly design the near-field codebook by considering the near-field cascaded array steering vector of XL-RIS.Then,the optimal codeword for XL-RIS is obtained by the exhausted training procedure.To reduce the beam training overhead,we further design a hierarchical nearfield codebook and propose the corresponding hierarchical near-field beam training scheme,where different levels of sub-codebooks are searched in turn with reduced codebook size.Simulation results show the proposed near-field beam training schemes outperform the existing far-field beam training scheme. | Xiuhong Wei Linglong Dai Yajun Zhao Guanghui Yu Xiangyang Duan | 2022 | China Communications2022，19，6： | 3 |
| 9 | 2D organic semiconductors, the future of green nanotechnology显示文摘The discovery of 2D organic semiconductors of atomically thin structures has attracted great attention due to their emerging optical, electronic, optoelectronic and mechatronic properties. Recent progress in such organic nanostructures has opened new opportunities for engineering material properties in many ways, such as, 0D/1D/2D nanoparticles hybridization, strain engineering, atomic doping etc. Moreover, 2D organic nanostructures exhibit a unique feature of bio–functionality and are highly sensitive to bio-analytes. Such peculiar behavior in 2D organics can be utilized to design highly-efficient bio-sensors. Also, a bio-molecular integrated electronic/optoelectronic device with enhanced performance can be attained. Furthermore, the bio-degradable, biocompatible, biometabolizable, non-toxic behaviour and natural origin of organic nanomaterials can address the current ecological concerns of increasing inorganic material based electronic waste. This review highlights the benefits of 2D organic semiconductors. Considering the importance of strategic techniques for growing thin 2D organic layers,this review summarizes progress towards this direction. The possible challenges for long-time stability and future research directions in 2D organic nano electronics/optoelectronics are also discussed. We believe that this review article provides immense research interests in organic 2D nanotechnology for exploiting green technologies in the future. | Guru Prakash Neupane Wendi Ma Tanju Yildirim Yilin Tang Linglong Zhang Yuerui Lu | 2019 | Nano Materials Science2019，1，4： | 3 |
| 10 | Wideband Channel Estimation for THz Massive MIMO显示文摘Terahertz(THz)communication is considered to be a promising technology for future 6G network.To overcome the severe attenuation and relieve the high power consumption,massive multipleinput multiple-output(MIMO)with hybrid precoding has been widely considered for THz communication.However,accurate wideband channel estimation,which is essential for hybrid precoding,is challenging in THz massive MIMO systems.The existing wideband channel estimation schemes based on the ideal assumption of common sparse channel support will suffer from a severe performance loss due to the beam split effect.In this paper,we propose a beam split pattern detection based channel estimation scheme to realize reliable wideband channel estimation in THz massive MIMO systems.Specifically,a comprehensive analysis on the angle-domain sparse structure of the wideband channel is provided by considering the beam split effect.Based on the analysis,we define a series of index sets called as beam split patterns,which are proved to have a one-to-one match to different physical channel directions.Inspired by this one-to-one match,we propose to estimate the physical channel direction by exploiting beam split patterns at first.Then,the sparse channel supports at different subcarriers can be obtained by utilizing a support detection window.This support detection window is generated by expanding the beam split pattern which is determined by the obtained physical channel direction.The above estimation procedure will be repeated path by path until all path components are estimated.Finally,the wideband channel can be recovered by calculating the elements on the total sparse channel support at all subcarriers.The proposed scheme exploits the wideband channel property implied by the beam split effect,i.e.,beam split pattern,which can significantly improve the channel estimation accuracy.Simulation results show that the proposed scheme is able to achieve higher accuracy than existing schemes. | Jingbo Tan Linglong Dai | 2021 | China Communications2021，18，5： | 3 |
| 11 | Kalman Filtering for Delayed Singular Systems with Multiplicative Noise显示文摘Kalman filtering problem for singular systems is dealt with, where the measurements consist of instantaneous measurements and delayed ones, and the plant includes multiplicative noise. By utilizing standard singular value decomposition, the restricted equivalent delayed system is presented, and the Kalman filters for the restricted equivalent system are given by using the well-known re-organization of innovation analysis lemma. The optimal Kalman filter for the original system is given based on the above Kalman filter by recursive Riccati equations, and a numerical example is presented to show the validity and efficiency of the proposed approach, where the comparison between the filter and predictor is also given. | Xiao Lu Linglong Wang Haixia Wang Xianghua Wang | 2016 | IEEE/CAA Journal of Automatica Sinica2016，3，1： | 2 |
| 12 | Exploring the heavy air pollution in Beijing in the fourth quarter of 2015: assessment of environmental benefits for red alerts显示文摘 | Teng NIE Lei NIE Zhen ZHOU Zhanshan WANG Yifeng XUE Jiajia GAO Xiaoqing WU Shoubin FAN Linglong CHENG | 2018 | Frontiers of Earth Science2018，12，2： | 2 |
| 13 | Bioengineered miR-124-3p prodrug selectively alters the proteome of human carcinoma cells to control multiple cellular components and lung metastasis in vivo显示文摘With the understanding of microRNA(miRNA or miR) functions in tumor initiation,progression,and metastasis,efforts are underway to develop new miRNA-based therapies.Very recently,we demonstrated effectiveness of a novel humanized bioengineered miR-124-3 p prodrug in controlling spontaneous lung metastasis in mouse models.This study was to investigate the molecular and cellular mechanisms by which miR-124-3 p controls tumor metastasis.Proteomics study identified a set of proteins selectively and significantly downregulated by bioengineered miR-124-3 p in A549 cells,which were assembled into multiple cellular components critical for metastatic potential.Among them,plectin(PLEC) was verified as a new direct target for miR-124-3 p that links cytoskeleton components and junctions.In miR-124-3 p-treated lung cancer and osteosarcoma cells,protein levels of vimentin,talin 1(TLN1),integrin beta-1(ITGB1),IQ motif containing GTPase activating protein 1(IQGAP1),cadherin2 or N-cadherin(CDH2),and junctional adhesion molecule A(F11 R or JAMA or JAM1) decreased,causing remodeling of cytoskeletons and disruption of cell-cell junctions.Furthermore,miR-124-3 p sharply suppressed the formation of focal adhesion plaques,leading to reduced cell adhesion capacity.Additionally,efficacy and safety of biologic miR-124-3 p therapy was established in an aggressive experimental metastasis mouse model in vivo.These results connect miR-124-3 p-PLEC signaling to other elements in the control of cytoskeleton,cell junctions,and adhesion essential for cancer cell invasion and extravasation towards metastasis,and support the promise of miR-124 therapy. | Linglong Deng Hannah Petrek Mei-Juan Tu Neelu Batra Ai-Xi Yu Ai-Ming Yu | 2021 | Acta Pharmaceutica Sinica B2021，11，12： | 2 |
| 14 | Positioning with OFDM signals for the next generation GNSS显示文摘 | DAI LINGLONG WANG ZHAOCHENG WANG JUN | 2010 | IEEE Transactions on Con- sumer Electronics2010，56，2： | 1 |
| 15 | Secure communication in TDS-OFDM system using constellation rotation and noise insertion显示文摘 | Ma Ruifeng Dai Linglong Wang Zhaocheng | | 0，，03： | 1 |
| 16 | Spectrally effi- cient time-frequency training OFDM for mobile large-scale MIMO system显示文摘 | Dai Linglong Wang Zhaocbeng Yang Zhixing | 2013 | IEEE Journal on Selected Areas in Commu- nications2013，31，2： | 1 |
| 17 | Secure communication in TDS- OFDM system using constellation rotation and noise insertion 显示文摘 | Ma Ruifeng Dai Linglong Wang Zhaocheng | 2010 | IEEE Transactions on Con- sumer Electronics2010，56，3： | 1 |
| 18 | An integrated approach to configure rGO/VS_(4)/S composites with improved catalysis of polysulfides for advanced lithium-sulfur batteries显示文摘Lithium-sulfur(Li-S)battery is labeled as a promising high-energy-density battery system,but some inherent drawbacks of sulfur cathode materials using relatively complicated techniques impair the practical applications.Herein,an integrated approach is proposed to fabricate the high-performance rGO/VS_(4)/S cathode composites through a simple one-step solvothermal method,where nano sulfur and VS_(4) particles are uniformly distributed on the conductive rGO matrix.rGO and sulfiphilic VS_(4)provide electron transfer skeleton and physical/chemical anchor for soluble lithium polysulfides(LiPS).Meanwhile,VS_(4) could also act as an electrochemical mediator to efficiently enhance the utilization and reversible conversion of LiPS.Correspondingly,the rGO/VS_(4)/S composites maintain a high reversible capacity of 969 mAh/g at 0.2 C after 100 cycles,with a capacity retention rate of 82.3%.The capacity fade rate could lower to 0.0374%per cycle at 1 C.Moreover,capacity still sustains 795 m Ah/g after 100 cycles in the relatively high-sulfurloading battery(6.5 mg/cm^(2)).Thus,the suggested method in configuring the sulfur-based composites is demonstrated a simple and efficient strategy to construct the high-performance Li-S batteries. | Feng Li Lu Wang Guangmeng Qu Peiyu Hou Linglong Kong Jinzhao Huang Xijin Xu | 2022 | Chinese Chemical Letters2022，33，8： | 1 |
| 19 | Different region climate regimes and topography affect the changes in area and mass balance of glaciers on the north and south slopes of the same glacierized massif (the West Nyainqentanglha Range, Tibetan Plateau)显示文摘 | Wusheng Yu Tandong Yao Shichang Kang Jianchen Pu Wei Yang Tanguang Gao Huabiao Zhao Hang Zhou Shenghai Li Weicai Wang Linglong Ma | 2013 | Journal of Hydrology2013，，： | 1 |
| 20 | Time-Frequency Training OFDM with High Spectral Efficiency and Reliable Performanc~ in High Speed Environments 显示文摘 | DAI Linglong WANG Zhaocheng YANG Zhixing | 2012 | IEEE Journal on Selected Areas in Commu- nications2012，20，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员