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| 1 | Novel PAPR Reduction Scheme Based on Continuous Nonlinear Piecewise Companding Transform for OFDM Systems显示文摘In this paper,a novel efficient continuous piecewise nonlinear companding scheme is proposed for reducing the peak-to-average power ratio(PAPR)of orthogonal frequency division multiplexing(OFDM)systems.In the proposed companding transform,signal samples with large amplitudes is clipped for peak power reduction,and the signal samples with medium amplitudes is nonlinear transformed with power compensation.While the signal samples with small amplitudes remain unchanged.The whole companding function is continuous and smooth in the range of positive numbers,which is beneficial for guaranteeing the bit error rate(BER)and power spectral density(PSD)performance.This scheme can achieve a significant reduction in PAPR.And at the same time,it cause little increment in BER and PSD performance.Simulation results indicate the superiority of the proposed scheme over existing companding schemes. | Zhitong Xing Kaiming Liu Kaiyuan Huang Bihua Tang Yuanan Liu | 2020 | China Communications2020，17，9： | 4 |
| 2 | Adaptive Power Loading Based On Unequal-Ber Strategy for OFDM Systems显示文摘 | LIU Kaiming TANG Bihua LIU Yuan'an | 2009 | IEEE Communications Letters2009，13，7： | 1 |
| 3 | Design of High-Efficiency broadband power amplifier using low-pass bias network显示文摘A novel design of high-efficiency broadband power amplifier(BPA) with the low-pass bias networkto enhance the efficiency and output power is presented in this paper. Compared with other bias networks, the proposed low-pass bias network shows a smaller baseband impedance, which can reduce the electrical memory effect. While it provides a larger radio frequency(RF) impedance, which can prevent the leakage of the output power from bias network. A BPA with the proposed bias network is designed using commercial Ga N device Cree40025 F. The designed BPA shows a fractional bandwidth of 40%, from 1.8 GHz to 2.7 GHz. The measured results exhibit 73.9 % drain efficiency(DE) value with output power of 43.5 d Bm at 2.7 GHz, which appears an enhancement of 9.5% and 2.5 d Bm comparing with that adopts LC bias network. | Yu Qijin Yu Cuiping Tang Bihua Liu Yuan'an | 2016 | The Journal of China Universities of Posts and Telecommunications2016，23，1： | 1 |
| 4 | Higher Order Modes in RTHOCT显示文摘HigherOrderModesinRTHOCTLiuYuanan;TangBihuaANDGaoYougang(DepartmentofTelecommunicationsEngineering,BeijingUniversityofPostsan... | Liu Yuanan Tang Bihua AND Gao Yougang(Department of Telecommunications Engineering, Beijing University of Posts and Telecommunication Beijing 100088,P. R. China) | 1995 | The Journal of China Universities of Posts and Telecommunications1995，2，1： | 0 |
| 5 | Study on Volterra-Laguerre behavioral model for RF power amplifier显示文摘 | 南敬昌 Liu Yuanan Tang Bihua | 2007 | High Technology Letters2007，13，4： | 0 |
| 6 | Toward high efficiency for content-based multiattribute event matching via hybrid methods显示文摘Event matching is a core in decoupled end-to-end communications, which are extensively applied to various areas. Event matching seeks the subscriptions that match a given event from a subscription set,however, this work becomes increasingly complicated in content-based multi-attribute scenarios, where events and subscriptions are formed in content, and described by multiple attributes. In addition, large-scale systems are easier to suffer from severe degradation in event matching performance. To this end, this paper presents a high-efficiency content-based multi-attribute event matching algorithm, called HEM(hybrid event matching),which is hybridized by 2 different methods. In HEM, the matching on each single attribute(called singleattribute matching) is processed by a triangle-based matching method or a direct matching method dynamically.All single-attribute matchings are sorted via a fast near-optimal algorithm, and each of them is carried out sequentially. In this manner, the searching space of event matching shrinks gradually, so that the searching performance is boosted along with the process of event matching. Experiments are conducted to evaluate HEM comprehensively, where it is observed that HEM outperforms 3 state-of-the-art counterparts(TAMA, H-TREE and REIN) in main criteria, such as event matching time, insertion time and deletion time. Moreover, the gap of performance between HEM and the counterparts enlarges with the increase of system scale. | Wenhao FAN Yuanan LIU Bihua TANG | 2016 | Science China(Information Sciences)2016，59，2： | 0 |
| 7 | Multisite computation offloading in dynamic mobile cloud environments显示文摘Dear editor,With the development of wireless communication and computer technology,using mobile devices(MDs)has become more and more popular.However,due to a series of constraints such as heat dissipation,volume and battery capacity,MDs take much time and energy to run some applications and even cannot run heavy applications.As a result,these constraints hinder the further development of MDs.To solve the problem that MDs’ | Xiaomin JIN Yuanan LIU Wenhao FAN Fan WU Bihua TANG | 2017 | Science China(Information Sciences)2017，60，8： | 0 |
| 8 | Multi-frame speckle reduction in OCT using supercontinuum pumped by noise-like pulses显示文摘In most coherent imaging modality,speckle noise is a major cause that blurs the boundary of tissues and degrades the image contrast.By utilizing the unique properties of supercontinuum(SC)generated by noise-like pulses(NLPs)and a simple multi-frame averaging technique,we achieved significant speckle reduction in spectral domain optical coherence tomography(SD-OCT).We quantitatively compared the speckle of our proposed method with those of conventional swept source OCT(SS-OCT)and SD-OCT based on commercial light sources.The experimental results show that SC pumped by NLPs combined with noncoherent averaging method achieves better denoising performance in terms of contrast to noise ratio(CNR). | Chengming Wang Yi-Jing You Shengnan Ai Wenxin Zhang Wenchao Liao Xiao Zhang Juicheng Hsieh Ning Zhang Bihua Tang Ci-Ling Pan Ping Xue | 2019 | Journal of Innovative Optical Health Sciences2019，，2： | 0 |
| 9 | Analysis on Quality Control of Argyreia acuta Lour显示文摘[Objectives]To establish a method for caffeic acid content determination and thin-layer chromatography identification of the Zhuang medicine Argyreia acuta Lour.[Methods]Silica gel GF254(thin-layer plate),toluene-formic acid-ethyl acetate(V∶V∶V=5∶1.2∶3)(developing agent)and 365 nm ultraviolet light were used for thin-layer chromatography identification.Under the chromatographic conditions of column of Thermo SCIENTIFIC Hypersil C18(5μm,4.60 mm×250 mm),mobile phase of methanol-0.1%phosphoric acid(23∶77),detection wavelength of 320 nm,column temperature of 30℃,sample size of 10μL and flow rate of 1.0 mL/min,the content of caffeic acid in A.acuta Lour was determined.[Results]Caffeic acid can be detected in thin layer chromatography,with strong specificity and clear spots.When the sample size of caffeic acid is within the range of 0.0151-0.4530μg(R^(2)=0.9999),the content of caffeic acid showed a relatively good linear relationship with the peak area.The average recovery rate of A.acuta Lour was 99.94%(RSD=2.68%),97.56%(RSD=1.57%)and 99.79%(RSD=2.05%),respectively.[Conclusions]This method can effectively identify A.acuta Lour,and can accurately determine the content of caffeic acid in A.acuta Lour.It has characteristics of high accuracy,high precision,good color rendering stability,good reproducibility and fast analysis speed. | Ru ZHANG Jiangcun WEI Chunli TANG Bihua NONG Guangli LU Yanxiu WANG | 2020 | Medicinal Plant2020，11，6： | 0 |
| 10 | Multi-level sharded blockchain system for edge computing显示文摘Blockchain technology is used in edge computing(EC) systems to solve the security problems caused by single point of failure(SPOF) due to data loss, task execution failure, or control by malicious nodes. However, the disadvantage of blockchain is high latency, which contradicts the strict latency requirements of EC services. The existing single-level sharded blockchain system(SLSBS) cannot provide different quality of service for different tasks. To solve these problems, a multi-level sharded blockchain system(MLSBS) based on genetic algorithm(GA) is proposed. The shards are classified according to the delay of the service, and the parameters such as the shard size of different shards are different. Using the GA, the MLSBS obtains the optimal resource allocation strategy that achieves maximum security. Simulation results show that the proposed scheme outperforms SLSBS. | Liu Qiao Tang Bihua Chen Xue Wu Fan Fan Wenhao | 2021 | The Journal of China Universities of Posts and Telecommunications2021，28，5： | 0 |
| 11 | Error exponents for two-hop Gaussian multiple source-destination relay channels显示文摘We investigate the two-hop multiple source-destination relay channels using the rate splitting trans-mission scheme where each source can split its message into private and public parts.We determine the system error probability via integrated exponent function under amplify-and-forward(AF)and decode-and-forward(DF)relay strategies.The most significant difference between AF and DF system error probability evaluations lies in a minimized cut-set bound of transmission rate under the DF strategy.There are many cases among transmission rate intervals for different system parameters(e.g.transmit power)and it is extremely complex to derive the system error probability for the DF strategy.We obtain a relatively simple result,which unifies various cases by a few expressions.Numerical results show that the system error probability decreases with the increase of the public message.Moreover,in order to draw deep insight into the reliability requirement of each source node in this network,we provide the error exponent region(EER)for different source nodes to show the trade-off of error probability among source nodes. | DENG PanLiang LIU YuanAn XIE Gang WANG XiaoYu TANG BiHua SUN JianFeng | 2012 | Science China(Information Sciences)2012，55，2： | 0 |
| 12 | Analysis and Study on Quality Control of Yao Medicine Damnacanthus macrophyllus Based on Methods in Chinese Pharmacopoeia显示文摘[Objectives]To establish a quality analysis method for Yao medicine Damnacanthus macrophyllus Sieb.ex Miq.var.giganteus(Makino)Koidz..[D.indicus Gaertn.f.var.giganteus Makino].[Methods]The moisture,total ash and alcohol extracts of D.macrophyllus medicinal materials were determined according to the experimental methods in the Chinese Pharmacopoeia(2020).[Results]All the 10 batches of D.macrophyllus medicinal materials from different collection times and different regions in Guangxi had the same plant morphological characteristics.The experimental results indicate that the moisture was 9.81%-11.52%,the total ash content was 7.37%-9.53%,the acid-insoluble ash content was 1.10%-1.97%,and the extract was 8.25%-10.22%.[Conclusions]This study provides a scientific basis for establishing a quality standard for Yao medicine D.macrophyllus medicinal materials,and it is expected to better utilize and develop D.macrophyllus. | Jiangcun WEI Xiumei MA Yanxiu WANG Bihua NONG Chunli TANG Jingrong LU Fengxian ZHAO | 2021 | Medicinal Plant2021，12，2： | 0 |
| 13 | Effect of Simiao Liangxue Granule on Acute Gouty Arthritis in Rats显示文摘[Objectives]To study the anti-inflammatory effect of Simiao Liangxue granule on the rats with acute gouty arthritis(AGA).[Methods]A total of 60 male SD rats were randomly divided into 6 groups with 10 rats in each group.The rats in the colchicine group were intragastrically administered with 0.65 mg/kg colchicine,and the rats in low,medium and high dose groups of Simiao Liangxue granule were intragastrically administered with Simiao Liangxue granule with mass concentration of 0.4,0.8 and 1.6 g/kg,respectively.The rats in the normal control group and the model group were given the same amount of normal saline for 7 d,and the acute gouty arthritis model was prepared 1 h after administration on the 5th d.At the end of the experiment,the degree of joint swelling and joint inflammation index,the content of interleukin-1β,tumor necrosis factor-a and cyclooxygenase-2 in articular cartilage,and the content of interleukin-8,NO and UA in serum of rats were measured,and the histomorphological observation was performed.[Results]Compared with the normal control group,the joints of rats were swollen to different degrees,the inflammation score was significantly increased,and the content of IL-1β,TNF-αand COX-2 in the soft tissue of the joints was significantly increased in each group(P<0.05);compared with the model group,the joint swelling degree and inflammation score of rats in the colchicine group and Simiao Liangxue granule group were significantly decreased,the content of IL-1β,TNF-αand COX-2 in the joint soft tissue was also significantly decreased(P<0.05),and the indexes of each dose group of Simiao Liangxue granule were similar to those of the colchicine group;compared with the normal control group,the content of IL-8,NO and UA in the joint soft tissue of rats was significantly increased in each group(P<0.05);compared with the model group,the content of all indexes in joint soft tissue of rats in normal control group,colchicine group and Simiao Liangxue granule group were significantly decreased(P<0.05);the content of various indexes in the joint soft tissue of rats in the low and medium dose groups of Simiao Liangxue granule was higher than that in the colchicine group,and decreased significantly with the increase of the dose of Simiao Liangxue granule(P<0.05);the inflammatory index decreased significantly with the increase of the dose of Simiao Liangxue granule(P<0.05);the inflammation and degeneration in each dose group of Simiao Liangxue granule were milder than those in the model group,and the symptoms were relieved to some extent with the increase of dose(P<0.05).[Conclusions]Simiao Liangxue granule has the effect of anti-inflammation and detumescence,and its mechanism may be related to the content of factors that reduce inflammation including IL-1β,TNF-α,C0X-2,IL-8,NO and UA. | Chunli TANG Jiangcun WEI Xiumei MA Guangli LU Yusheng HUANG Sen LIANG Ling CHEN Ying YANG Bihua NONG | 2021 | Medicinal Plant2021，12，2： | 0 |
| 14 | Parameters of Membrane-Supported Air-Filled TEM Transmission Line显示文摘ParametersofMembrane-SupportedAir-FilledTEMTransmissionLine￥LiuYuanan(DepartmentofTelecommunicationEngineering,BeijingUnivers... | Liu Yuanan(Department of Telecommunication Engineering, Beijing University of posts and Telecommunications,Beijing 100088,P.R.China)Tang Bihua(The Graduate School,Beijing University of Posts and Telecommunications, Beijing 100088,P.R.Chilla.) | 1996 | The Journal of China Universities of Posts and Telecommunications1996，3，1： | 0 |
| 15 | Establishment of the Determination Methods of Total Anthraquinone Content in Different Processed Products of Rhubarb显示文摘[Objectives]Ultraviolet spectrophotometry was established for the determination of total content of anthraquinone in different processed products of rhubarb.[Methods]Emodin was used as the control substance,and its color was developed by magnesium acetate methanol solution with the concentration of 1%,the absorbance was determined at the wavelength of 516 nm,the content of total anthraquinone in different processed products of rhubarb was determined to compare the content differences.[Results]The regression equation was y=0.0452 x+0.0015,R 2=0.9991.Emodin had a good linear range in the concentration of 0.98-23.52μg/mL,with high accuracy,good repeatability and stable detection results.This method revealed the content changes of total anthraquinone in rhubarb before and after processing.[Conclusions]This method could be used as the quality control method of different processed products of rhubarb,and provided reference for the comprehensive development and utilization of rhubarb resources in the future. | Jiangcun WEI Xiumei MA Chunli TANG Shaofeng CHEN Yusheng HUANG Bihua NONG Dongmei HUANG Guangli LU | 2021 | Medicinal Plant2021，12，1： | 0 |
| 16 | Effects of Dachengqi Decoctions Made from Different Processed Products of Rhubarb on ABP Mice显示文摘[Objectives]This study aims to investigate the effects of Dachengqi decoctions made from different processed products of rhubarb on water intake,defecation amount,urination amount,urination volume,dryness of stool,mental state and activity of ABP mice.[Methods]Total 165 mice were randomly divided into Dachengqi decoction groups(made from different processed products of rhubarb,6 and 10 g/kg),positive control group,blank control group and model group.The administration dosage was 20 mL/kg.With the metabolic cage integral method,the effects of Dachengqi decoctions made from different processed products of rhubarb on the water intake,defecation amount,urination volume,dryness of stool,mental state and activity of ABP mice were compared.[Results]Dachengqi decoctions all could soften stool and promote rapid defecation of the mice with fecal peritonitis of excess heat stagnation type except that made from carbonized rhubarb.The water intakes of all the Dachengqi decoction groups were higher than those of the positive control group and the model group,except the carbonized rhubarb-made Dachengqi decoction groups.[Conclusions]Dachengqi decoctions all have obvious purgative effect except those made from carbonized rhubarb. | Chunli TANG Jiangcun WEI Xiumei MA Guangli LU Dongmei HUANG Sen LIANG Ling CHEN Ying YANG Bihua NONG | 2021 | Medicinal Plant2021，12，1： | 0 |
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