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19篇 您的检索式:作者名="Wenting Peng"
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1Chitosan conduits combined with nerve growth factor microspheres repair facial nerve defects显示文摘Microspheres containing nerve growth factor for sustained release were prepared by a compound method,and implanted into chitosan conduits to repair 10-mm defects on the right buccal branches of the facial nerve in rabbits.In addition,chitosan conduits combined with nerve growth factor or normal saline,as well as autologous nerve,were used as controls.At 90 days post-surgery,the muscular atrophy on the right upper lip was more evident in the nerve growth factor and normal saline groups than in the nerve growth factor-microspheres and autologous nerve groups.Electrophysiological analysis revealed that the nerve conduction velocity and amplitude were significantly higher in the nerve growth factor-microspheres and autologous nerve groups than in the nerve growth factor and normal saline groups.Moreover,histological observation illustrated that the diameter,number,alignment and myelin sheath thickness of myelinated nerves derived from rabbits were higher in the nerve growth factor-microspheres and autologous nerve groups than in the nerve growth factor and normal saline groups.These findings indicate that chitosan nerve conduits combined with microspheres for sustained release of nerve growth factor can significantly improve facial nerve defect repair in rabbits.Huawei Liu Weisheng Wen Min Hu Wenting Bi Lijie Chen Sanxia Liu Peng Chen Xinying Tan 2013Neural Regeneration Research2013,8,33:22
2Thiolactone copolymer donor gifts organic solar cells a 16.72% efficiency显示文摘Since 1995,bulk-heterojunction organic solar cells consisting of one or two organic donors and one or two organic acceptors have been fighting for high power conversion efficiencies(PCEs)and good stability[1].Until recent years,this next-generation photovoltaic technology starts to offer decent PCEs,shedding the light on commercialization,and attracting great attention again[2-14].Compared w让h the continuously emerging highperformance nonfullerene acceptors,high-performance donors are rare.Ji Xiong Ke Jin Yufan Jiang Jianqiang Qin Tan Wang Jinfeng Liu Qishi Liu Haili Peng Xiongfeng Li Anxin Sun Xianyi Meng Lixiu Zhang Ling Liu Wenting Li Zhimin Fang Xue Jia Zuo Xiao Yaqing Feng Xiaotao Zhang Kuan Sun Shangfeng Yang Shengwei Shi Liming Ding 2019Science Bulletin2019,64,21:17
3Gold nanorods together with HSP inhibitor-VER-155008 micelles for colon cancer mild-temperature photothermal therapy显示文摘Enhancing the heat-sensitivity of tumor cells provides an alternative solution to maintaining the therapeutic outcome of photothermal therapy(PTT). In this study, we constructed a therapeutic system, which was composed of methoxy-polyethylene-glycol-coated-gold-nanorods(MPEG-AuN R) and VER-155008-micelles, to evaluate the effect of VER-155008 on the sensitivity of tumor cells to heat, and further investigate the therapeutic outcome of MPEG-AuN R mediated PTT combined with VER-155008-micelles. VER-155008-micelles downregulate the expression of heat shock proteins and attenuate the heat-resistance of tumor cell. The survival of HCT116 cells treated with VER-155008-micelles under 45 ℃ is equal to that treated with high temperature hyperthermia(55 ℃) in vitro. Furthermore, we proved either the MPEG-AuN R or VER-155008-micelles can be accumulate in the tumor site by photoacoustic imaging and fluorescent imaging. In vivo anti-cancer evaluation showed that tumor size remarkably decreased(smaller than 100 mm^3 or vanished) when treated with combing 45℃ mild PTT system, which contrasted to the tumor size when treated with individual 45℃ mild PTT(around 500nm^3) or normal saline as control(larger than 2000 nm^3). These results proved that the VER-155008-micelles can attenuate the heat-resistance of tumor cells and enhance the therapeutic outcome of mild-temperature photothermal therapy.Xichuan Tang Liwei Tan Kun Shi Jinrong Peng Yao Xiao Wenting Li Lijuan Chen Qian Yang Zhiyong Qian 2018Acta Pharmaceutica Sinica B2018,8,4:12
4Characterization of the soybean Gm ALMT family genes and the function of Gm ALMT5 in response to phosphate starvation显示文摘A potential mechanism to enhance utilization of sparingly soluble forms of phosphorus(P) is the root secretion of malate, which is mainly mediated by the ALMT gene family in plants. In this study, a total of 34 Gm ALMT genes were identified in the soybean genome. Expression patterns diverged considerably among Gm ALMTs in response to phosphate(Pi) starvation in leaves, roots and flowers, with expression altered by P availability in 26 of the 34 Gm ALMTs. One root-specific Gm ALMT whose expression was significantly enhanced by Pi-starvation,Gm ALMT_5, was studied in more detail to determine its possible role in soybean P nutrition. Analysis of Gm ALMT_5 tissue expression patterns, subcellular localization, and malate exudation from transgenic soybean hairy rootsoverexpressing Gm ALMT_5, demonstrated that Gm ALMT_5 is a plasma membrane protein that mediates malate efflux from roots. Furthermore, both growth and P content of transgenic Arabidopsis overexpressing Gm ALMT_5 were significantly increased when sparingly soluble Ca-P was used as the external P source. Taken together, these results indicate that members of the soybean Gm ALMT gene family exhibit diverse responses to Pi starvation. One member of this family, Gm ALMT_5, might contribute to soybean P efficiency by enhancing utilization of sparingly soluble P sources under P limited conditions.Wenting Peng Weiwei Wu Junchu Peng Jiaojiao Li Yan Lin Yanan Wang Jiang Tian Lili Sun Cuiyue Liang Hong Liao 2018Journal of Integrative Plant Biology2018,60,3:7
5Efficacy and Economic Evaluation of Nonbiological Artificial Liver Therapy in Acute-on-chronic Hepatitis B Liver Failure显示文摘Background and Aims:Nonbiological artificial liver(NBAL)is frequently used as a first-line treatment for hepatitis B virus-associated acute-on-chronic liver failure(HBV-ACLF).This study aimed to compare the therapeutic efficacy and cost-effectiveness ratio(CER)of comprehensive medical treatment,plasma exchange(PE),and double plasma molecular adsorption system(DPMAS)plus half-dose PE(DPMAS+PE)in patients with HBV-ACLF.Methods:A total of 186 patients with HBV-ACLF randomly received comprehensive medical treatment,PE,or DPMAS+PE and were prospectively evaluated.Patients were divided into four subgroups based on the pretreatment prothrombin activity(PTA):Group I(PTA>40%),group II(PTA 30–40%),group III(PTA 20–30%),and group IV(PTA<20%).The main outcome measures were 28 day effectiveness;90 day liver transplantation-free survival;change of biochemical parameters;and CER.Results:DPMAS+PE treatment was associated with significantly higher 28 day effectiveness and 90 day liver transplantation-free survival compared with PE treatment in patients with group I liver failure.Clearance of serum total bilirubin(TBIL),AST,and creatinine(Cr)were significantly higher in the DPMAS+PE group than in the PE group.For subjects with group I liver failure,DPMAS+PE treatment had advantages of lower CER values and better cost-effectiveness.Conclusions:Compared with comprehensive medical treatment and PE alone,DPMAS with halfdose sequential PE treatment more effectively improved TBIL,AST,and Cr in HBV-ACLF patients,improved 28 day effectiveness and 90 day survival rates in patients with group I liver failure,and was more cost effective.DPMAS+PE is a viable NBAL approach for treatment of HBV-ACLF.Cichun Wu Wenting Peng Da Cheng Huimin Gu Fei Liu Shifang Peng Lei Fu 2023Journal of Clinical and Translational Hepatology2023,11,2:5
6Rab20 is critical for bacterial lipoprotein tolerization-enhanced bactericidal activity in macrophages during bacterial infection显示文摘Bacterial cell wall component-induced tolerance represents an important protective mechanism during microbial infection.Tolerance induced by the TLR2 agonist bacterial lipoprotein(BLP)has been shown to attenuate the inflammatory response,and simultaneously to augment antimicrobial function,thereby conferring its protection against microbial sepsis.However,the underlying mechanism by which BLP tolerance augments bactericidal activity has not been fully elucidated.Here,we reported that the induction of BLP tolerance in murine macrophages upregulated the expression of Rab20,a membrane trafficking regulator,at both the mRNA and protein levels upon bacterial infection.The knockdown of Rab20 with Rab20 specific siRNA(siRab20)did not affect the phagocytosis of Escherichia coli(E.coli),but substantially impaired the intracellular killing of the ingested E.coli in BLP-tolerized macrophages.Furthermore,Rab20 was associated with GFP-E.coli containing phagosomes,and BLP tolerization resulted in the enhanced maturation of GFP-E.coli-containing phagosomes associated with Rab20 and strong lysosomal acidification.The knockdown of Rab20 substantially diminished lysosome acidification and disturbed the fusion of GFP-E.coli containing phagosomes with lysosomes in BLP-tolerized macrophages.These results demonstrate that Rab20 plays a critical role in BLP tolerization-induced augmentation of bactericidal activity via promoting phagosome maturation and the fusion of bacteria containing phagosomes with lysosomes.Shuqi Zhao Dalin Xi Junwei Cai Wenting Chen Jing Xiang Na Peng Juan Wang Yong Jiang Zhuzhong Mei Jinghua Liu 2020Science China(Life Sciences)2020,63,3:2
7Long-term daily dataset of surface sensible heat flux and latent heat release over the Tibetan Plateau based on routine meteorological observations显示文摘As the main components of the atmospheric heat source/sink over the Tibetan Plateau(TP),up-to-date spatiotemporal fields of surface sensible heat flux and latent heat release by precipitation are vital for investigating the local land-atmosphere interaction and the effect of the thermal forcing of the TP on global weather and climate.This study recalculates the long-term daily dataset of surface sensible heat flux and latent heat release of condensation over the TP based on 293 routine meteorological observations,with the latest date being 31 December 2019.Most stations have adequate and valid records during the period 1981-2019,and the results for 1951-1980 are also calculated if the observations are available.Moreover,a brief evaluation of the climatology and long-term variation during 1981-2019 is conducted.By providing the most continuous and longest set of observational surface sensible heat flux and latent heat release of condensation data over the TP with a high degree of credibility,this new dataset will support research concerning the multi-timescale variation of diabatic heating/cooling over the TP and its remote influence.It is openly available on the LASG data-sharing platform(http://gffzza13a34b6ae8b4fa1h5pk59puu0ufn65qp.ffgz.tsg.suse.edu.cn/TPSHLH/).Anmin Duan Senfeng Liu Wenting Hu Die Hu Yuzhuo Peng 2022Big Earth Data2022,6,4:2
8Blue light-induced rare-earth free phosphors for the highly sensitive and selective imaging of latent fingerprints based on enhanced hydrophobic interaction显示文摘The demand for in-situ detection of latent fingerprints(LFPs)in ways of high sensitivity,high selectivity,high contrast,low cost and user-friendly is still urgent.To overcome this challenge,a moisture-stable,red-emitting fluoride phosphor K_(3)AlF_(6):Mn^(4+)(KAF:Mn^(4+))with an organic hydrophobic skin was prepared.The phosphor has a uniform and superfine morphology with excellent luminescence properties.More importantly,this non-ultraviolet(UV)or non-near infrared(NIR)induced phosphor was proved to be an ideal fluorescent label for LFP imaging,which is both friendly for touch DNA analysis and compatible to forensic light sources.The well-defined ridge details with little background interference on various surfaces were presented by the oleic acid(OA)modified KAF:Mn^(4+)(KAF:Mn^(4+)-OA)phosphor in few seconds using the powder dusting method.To confirm the high selectivity of KAF:Mn^(4+)-OA for LFP imaging,an efficient quantitative evaluation method is proposed with the aid of ImageJ&Origin software.Due to the superiority of the Mn^(4+)-doped fluoride for the rapid imaging of LFPs in terms of lowcost,high compatibility and good availability,it is expected to be a promising candidate for forensic science as well as fluorescence imaging in other fields instead of rare earth luminescent materials.Di Peng Shengan He Yuyan Zhang Liqin Yao Wendong Nie Zhijian Liao Wenting Cai Xinyu Ye 2022Journal of Materiomics2022,8,1:2
9Pyrene-tiaraed pillar[5]arene:Strong intramolecular excimer emission applicable for photo-writing显示文摘A pyrene-tiaraed pillar[5]a re ne derivative was synthesized,which showed a concentration-independent intensive excimer emission.Photolysis of the pyrene-tiaraed pillar[5]arene led to a switch from excimer to monomer emission,applicable to photo-writing.Chao Peng Wenting Liang Jiecheng Ji Chunying Fan Kuppusamy Kanagaraj Wanhua Wu Guo Cheng Dan Su Zhihui Zhong Cheng Yang 2021Chinese Chemical Letters2021,32,1:1
10Optical Molecular Imaging Frontiers in Oncology: The Pursuit of Accuracy and Sensitivity显示文摘Cutting-edge technologies in optical molecular imaging have ushered in new frontiers in cancer research, clinical translation, and medical practice, as evidenced by recent advances in optical multimodality imaging, Cerenkov luminescence imaging(CLI), and optical imageguided surgeries. New abilities allow in vivo cancer imaging with sensitivity and accuracy that are unprecedented in conventional imaging approaches. The visualization of cellular and molecular behaviors and events within tumors in living subjects is improving our deeper understanding of tumors at a systems level. These advances are being rapidly used to acquire tumor-to-tumor molecular heterogeneity, both dynamically and quantitatively, as well as to achieve more effective therapeutic interventions with the assistance of real-time imaging. In the era of molecular imaging, optical technologies hold great promise to facilitate the development of highly sensitive cancer diagnoses as well as personalized patient treatment—one of the ultimate goals of precision medicine.Kun Wang Chongwei Chi Zhenhua Hu Muhan Liu Hui Hui Wenting Shang Dong Peng Shuang Zhang Jiezuo Ye Haixiao Liu Jie Tian 2015Engineering2015,1,3:1
11Experimental and numerical study on hysteretic performance of SMA spring-friction bearings显示文摘This paper presents an experimental and numerical study to investigate the hysteretic performance of a new type of isolator consisting of shape memory alloy springs and friction bearing called an SMA spring-friction bearing(SFB). The SFB is a sliding-type isolator with SMA devices used for the seismic protection of engineering structures. The principle of operation of the isolation bearing is introduced. In order to explore the possibility of applying SMA elements in passive seismic control devices, large diameter superelastic tension/compression Ni Ti SMA helical springs used in the SFB isolator were developed. Mechanical experiments of the SMA helical spring were carried out to understand its superelastic characteristics. After that, a series of quasi-static tests on a single SFB isolator prototype were conducted to measure its force-displacement relationships for different loading conditions and study the corresponding variation law of its mechanical performance. The experimental results demonstrate that the SFB exhibits full hysteretic curves, excellent energy dissipation capacity, and moderate recentering ability. Finally, a theoretical model capable of emulating the hysteretic behavior of the SMA-based isolator was then established and implemented in MATLAB software. The comparison of the numerical results with the experimental results shows the efficacy of the proposed model for simulating the response of the SFB.Zhuang Peng Xue Suduo Nie Pan Wang Wenting 2016Earthquake Engineering and Engineering Vibration2016,15,4:1
12Effects of ultrasound on the morphology and properties of propylene-based plastomer / nanosilica composites显示文摘Peng Bo Wu Hong Bao Wenting 2011Polymer Journal2011,43,1:1
13Interaction potential of two nonidentical ground-state atoms显示文摘We study the interaction potential of two nonidentical ground-state atoms coupled to a scalar field in a vacuum by separately calculating the contributions of vacuum fluctuations and those of the radiation reaction of the atoms.Both cases of atoms in a free space and in parallel or vertical alignment to a reflecting boundary are considered.For the former case,we find that the leading-order interaction potential in the regionλA?L?λB exhibits the same separationdependence as that in the region L?λA?λB,where L,λA andλB are respectively the interatomic separation and the transition wavelengths of two atoms withλA?λB.For the latter case,we find that boundary-induced modifications are very remarkable when L?z,with z characterizing the separation between the two-atom system and the boundary.Particularly,when L further satisfies L?λA and L?λB,the interaction potential in the parallel-and the verticalalignment cases respectively scales as z4L-7 and z2L-5,the L-dependence of which is one order higher than those of two atoms in regions where L?z and meanwhile L?λA or/and L?λB.Our results suggest that retardation for the interaction potential of two nonidentical atoms with remarkably distinctive transition frequencies happens only when the interatomic separation is much greater than the transition wavelengths of both atoms.Yan Peng Shijing Cheng Wenting Zhou 2023Communications in Theoretical Physics2023,75,8:0
14Effects of drip and flood irrigation on carbon dioxide exchange and crop growth in the maize ecosystem in the Hetao Irrigation District,China显示文摘Drip irrigation and flood irrigation are major irrigation methods for maize crops in the Hetao Irrigation District,Inner Mongolia Autonomous Region,China.This research delves into the effects of these irrigation methods on carbon dioxide(CO_(2))exchange and crop growth in this region.The experimental site was divided into drip and flood irrigation zones.The irrigation schedules of this study aligned with the local commonly used irrigation schedule.We employed a developed chamber system to measure the diurnal CO_(2)exchange of maize plants during various growth stages under both drip and flood irrigation methods.From May to September in 2020 and 2021,two sets of repeated experiments were conducted.In each experiment,a total of nine measurements of CO_(2)exchange were performed to obtain carbon exchange data at different growth stages of maize crop.During each CO_(2)exchange measurement event,CO_(2)flux data were collected every two hours over a day-long period to capture the diurnal variations in CO_(2)exchange.During each CO_(2)exchange measurement event,the biological parameters(aboveground biomass and crop growth rate)of maize and environmental parameters(including air humidity,air temperature,precipitation,soil water content,and photosynthetically active radiation)were measured.The results indicated a V-shaped trend in net ecosystem CO_(2)exchange in daytime,reducing slowly at night,while the net assimilation rate(net primary productivity)exhibited a contrasting trend.Notably,compared with flood irrigation,drip irrigation demonstrated significantly higher average daily soil CO_(2)emission and greater average daily CO_(2)absorption by maize plants.Consequently,within the maize ecosystem,drip irrigation appeared more conducive to absorbing atmospheric CO_(2).Furthermore,drip irrigation demonstrated a faster crop growth rate and increased aboveground biomass compared with flood irrigation.A strong linear relationship existed between leaf area index and light utilization efficiency,irrespective of the irrigation method.Notably,drip irrigation displayed superior light use efficiency compared with flood irrigation.The final yield results corroborated these findings,indicating that drip irrigation yielded higher harvest index and overall yield than flood irrigation.The results of this study provide a basis for the selection of optimal irrigation methods commonly used in the Hetao Irrigation District.This research also serves as a reference for future irrigation studies that consider measurements of both carbon emissions and yield simultaneously.LI Chaoqun HAN Wenting PENG Manman 2024Journal of Arid Land2024,16,2:0
15Preparation,characterization and photodegradation of methylene blue based on TiO_2 microparticles modified with thiophene substituents显示文摘The new microparticles,2-formylthiophene(FT)/TiO2 and(E)-1,2-bis(5-formyl-2-thienyl) ethylene(EBFTE)/TiO2 were synthesized with a silane coupling agent.The prepared TiO2 composites were characterized using Ultraviolet-Vis absorption(UV-Vis),X-ray diffraction(XRD),scanning electron microscope(SEM) and thermogravimetric analyzer(TGA).Methylene blue was used as a model material to examine the photocatalytic activities of the prepared catalysts under both Ultraviolet-Vis(UV) and visible(Vis) light.The enhanced photocatalytic activities were observed in the presence of(FT)/TiO2 and EBFTE/TiO2 under Vis light.It suggests that FT or EBFTE plays a block or active role in the photodegradation mechanisms under UV and Vis light irradiation,respectively.LIU Pei ZHANG Peng CAO DongLiang XUE WenTing 2012Chinese Science Bulletin2012,57,33:0
16Cyanidin-3-glucoside protects the photooxidative damage of retinal pigment epithelium cells by regulating sphingolipid signaling and inhibiting MAPK pathway显示文摘Cyanidin-3-glucoside(C3G)is the most common anthocyanin in dark grains and berries and is a food functional factor to improve visual health.However,the mechanisms of C3G on blue light-induced retinal pigment epithelial(RPE)cell photooxidative damage needs further exploration.We investigated the effects of C3G on blue light-irradiated A2E-containing RPE cells and explored whether sphingolipid,mitogen-activated protein kinase(MAPK),and mitochondria-mediated pathways are involved in this mechanism.Blue light irradiation led to mitochondria and lysosome damage in RPE cells,whereas C3G preserved mitochondrial morphology and function and maintained the lysosomal integrity.C3G suppressed the phosphorylation of JNK and p38 MAPK and mitochondria-mediated pathways to inhibit RPE cell apoptosis.Lipidomics data showed that C3G protected RPE cells against blue light-induced lipid peroxidation and apoptosis by maintaining sphingolipids balance.C3G significantly inhibited ceramide(Cer d18:0/15:0,Cer d18:0/16:0 and Cer d18:0/18:0)accumulation and elevated galactosylceramide(GalCer d18:1/15:0 and GalCer d18:1/16:0)levels in the irradiated A2E-containing RPE cells.Furthermore,C3G attenuated cell membrane damage by increasing phosphatidylcholine and phosphatidylserine levels.C3G inhibited apoptosis and preserved the structure of mitochondria and lysosome by regulating sphingolipid signaling and suppression of MAPK activation in RPE cells.Thus,dietary supplementation of C3G prevents retinal photooxidative damage.Tingting Liu Wentao Qi Wenting Peng Jianan Zhang Yong Wang 2024Food Science and Human Wellness2024,13,2:0
17The existence of a nonclassical TCA cycle in the nucleus that wires the metabolic-epigenetic circuitry显示文摘The scope and variety of the metabolic intermediates from the mitochondrial tricarboxylic acid(TCA)cycle that are engaged in epigenetic regulation of the chromatin function in the nucleus raise an outstanding question about how timely and precise supply/consumption of these metabolites is achieved in the nucleus.We report here the identification of a nonclassical TCA cycle in the nucleus(nTCA cycle).We found that all the TCA cycle-associated enzymes including citrate synthase(CS),aconitase 2(ACO2),isocitrate dehydrogenase 3(IDH3),oxoglutarate dehydrogenase(OGDH),succinyl-CoA synthetase(SCS),fumarate hydratase(FH),and malate dehydrogenase 2(MDH2),except for succinate dehydrogenase(SDH),a component of electron transport chain for generating ATP,exist in the nucleus.We showed that these nuclear enzymes catalyze an incomplete TCA cycle similar to that found in cyanobacteria.We propose that the nTCA cycle is implemented mainly to generate/consume metabolic intermediates,not for energy production.We demonstrated that the nTCA cycle is intrinsically linked to chromatin dynamics and transcription regulation.Together,our study uncovers the existence of a nonclassical TCA cycle in the nucleus that links the metabolic pathway to epigenetic regulation.Xujun Liu Wenzhe Si Lin He Jianguo Yang Yani Peng Jie Ren Xiaoping Liu Tong Jin Huajing Yu Zihan Zhang Xiao Cheng Wenting Zhang Lu Xia Yunchao Huang Yue Wang Shumeng Liu Lin Shan Yu Zhang Xiaohan Yang Haixia Li Jing Liang Luyang Sun Yongfeng Shang 2021Signal Transduction and Targeted Therapy2021,6,12:0
18Therapeutic potential of an anti-HER2 single chain antibody-DM1 conjugates for the treatment of HER2-positive cancer显示文摘Antibody–drug conjugates(ADCs)take the advantage of monoclonal antibodies to selectively deliver highly potent cytotoxic drugs to tumor cells,which have become a powerful measure for cancer treatment in recent years.To develop a more effective therapy for human epidermal growth factor receptor 2(HER2)-positive cancer,we explored a novel ADCs composed of anti-HER2 scFv–HSA fusion antibodies conjugates with a potent cytotoxic drug DM1.The resulting ADCs,T-SA1–DM1 and T-SA2–DM1(drug-to-antibody ratio in the range of 3.2–3.5)displayed efficient inhibition in the growth of HER2-positive tumor cell lines and the half-maximal inhibitory concentration on SKBR-3 and SKOV3 cells were both at the nanomolar levels in vitro.In HER2-positive human ovarian cancer xenograft models,T-SA1–DM1 and T-SA2–DM1 also showed remarkable antitumor activity.Importantly,three out of six mice exhibited complete remission without regrowth in the high-dose group of T-SA1–DM1.On the basis of the analysis of luminescence imaging,anti-HER2 scFv–HSA fusion antibodies,especially T-SA1,showed strong and rapid tumor tissue penetrability and distribution compared with trastuzumab.Collectively,the novel type of ADCs is effective and selective targeting to HER2-positive cancer,and may be a promising antitumor drug candidate for further studies.Hang Zhang Yuxi Wang Yangping Wu Xiaohua Jiang Yiran Tao Yuqin Yao Yujia Peng Xiangzheng Chen Yuyin Fu Lin Yu Ruixue Wang Qinhuai Lai Weirong Lai Wenting Li Yuhuan Kang Shuli Yi Ying Lu Lantu Gou Min Wu Jinliang Yang 2017Signal Transduction and Targeted Therapy2017,2,1:0
19Deep Reinforcement Learning Based Power Minimization for RIS-Assisted MISO-OFDM Systems显示文摘In this paper,we investigate the downlink orthogonal frequency division multiplexing(OFDM)transmission system assisted by reconfigurable intelligent surfaces(RISs).Considering multiple antennas at the base station(BS)and multiple single-antenna users,the joint optimization of precoder at the BS and the phase shift design at the RIS is studied to minimize the transmit power under the constraint of the certain quality-of-service.A deep reinforcement learning(DRL)based algorithm is proposed,in which maximum ratio transmission(MRT)precoding is utilized at the BS and the twin delayed deep deterministic policy gradient(TD3)method is utilized for RIS phase shift optimization.Numerical results demonstrate that the proposed DRL based algorithm can achieve a transmit power almost the same with the lower bound achieved by manifold optimization(MO)algorithm while has much less computation delay.Peng Chen Wenting Huang Xiao Li Shi Jin 2023China Communications2023,20,4:0
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