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| 1 | Five hundred meter aperture spherical radio telescope (FAST)显示文摘Five hundred meter aperture spherical radio telescope (FAST) will be the largest radio telescope in the world. The innovative engineering concept and design pave a new road to realizing a huge single dish in the most effective way. Three outstanding features of the telescope are the unique karst depressions as the sites, the active main reflector which corrects spherical aberration on the ground to achieve full polarization and a wide band without involving a complex feed system, and the light focus cabin driven by cables and servomechanism plus a parallel robot as secondary adjustable system to carry the most precise parts of the receivers. Being the most sensitive radio telescope, FAST will enable astronomers to jumpstart many of the science goals, for example, the neutral hydrogen line surveying in distant galaxies out to very large redshifts, looking for the first shining star, detecting thousands of new pulsars, etc. Extremely interesting and exotic objects may yet await discovery by FAST. As a multi-science platform, the telescope will provide treasures to astronomers, as well as bring prosperity to other research, e.g. space weather study, deep space exploration and national security. The construction of FAST itself is expected to promote the development in high technology of relevant fields. | NAN Rendong | 2006 | Science China(Physics,Mechanics & Astronomy)2006，49，2： | 77 |
| 2 | 6G Visions:Mobile Ultra-Broadband,Super Internet-of-Things,and Artificial Intelligence显示文摘With a ten-year horizon from concept to reality, it is time now to start thinking about what will the sixth-generation(6G) mobile communications be on the eve of the fifth-generation(5G) deployment. To pave the way for the development of 6G and beyond, we provide 6G visions in this paper. We first introduce the state-of-the-art technologies in 5G and indicate the necessity to study 6G. By taking the current and emerging development of wireless communications into consideration, we envision 6G to include three major aspects, namely, mobile ultra-broadband, super Internet-of-Things(IoT), and artificial intelligence(AI). Then, we review key technologies to realize each aspect. In particular, teraherz(THz) communications can be used to support mobile ultra-broadband, symbiotic radio and satellite-assisted communications can be used to achieve super IoT, and machine learning techniques are promising candidates for AI. For each technology, we provide the basic principle, key challenges, and state-of-the-art approaches and solutions. | Lin Zhang Ying-Chang Liang Dusit Niyato | 2019 | China Communications2019，16，8： | 52 |
| 3 | GNU Radio:开放的软件无线电平台显示文摘GNU Radio是一种运行于普通PC上的开放的软件无线电平台,其软件代码和硬件设计完全公开。基于该平台,用户能够以软件编程的方式灵活地构建各种无线应用。文章首先结合目前软件无线电技术的发展概况对GNU Radio进行概述;然后介绍了GNU Radio软件以及与之配套的硬件前端USRP(Unversal Software Radio Peripera)l的结构、原理、安装;接下来列举了GNU Radio的几种有代表性的应用;最后总结了GNU Radio的特点,并对其应用和发展前景进行了展望。 | 曹瀚文 王文博 | 2007 | 电信快报(网络与通信)2007，，4： | 24 |
| 4 | 基于ZYNQ-7000 FPGA和AD9361的软件无线电平台设计显示文摘设计了一种基于ZYNQ-7000系列FPGA和AD9361的软件无线电(SDR)平台。该平台采用零中频软件无线电方案,选用AD9361设计射频收发前端,选用ZYNQ-7000系列FPGA搭建基带处理平台,并借助PC的数据处理能力进一步提升系统的灵活性和通用性。PC和ZYNQ基带处理平台之间通过千兆网口通信。在PC上使用GNU Radio软件实现802.11a基带数据的处理,搭建两套SDR系统。实测结果验证了该平台的通信可靠性。该软件无线电平台对于通信类学生的实验教学和科研工作有借鉴意义。 | 张鹏辉 张翠翠 赵耀 徐兴良 | 2019 | 实验技术与管理2019，36，8： | 24 |
| 5 | 基于DRM数字调幅广播的高频外辐射源雷达实验研究显示文摘该文介绍了利用新近研制的全数字主被动一体化高频地波雷达系统,开展我国首次基于DRM(Digital Radio Mondiale)数字调幅广播的高频外辐射源雷达(HF Passive Bistatic Radar,HFPBR)实验研究的情况。论述了该体制雷达的理论、关键技术、探测设备和外场实验,给出了不同条件下(包括地波模式、天波模式、天地波混合传播模式)的典型探测结果,在国际上首次从实验上证实了利用DRM广播信号实现超视距无源探测的技术可行性,为该探测技术的发展奠定了理论与实验基础。 | 万显荣 赵志欣 柯亨玉 程丰 饶云华 龚子平 | 2012 | 雷达学报(中英文)2012，1，1： | 22 |
| 6 | 基于GNU Radio和USRP的无线通信系统建模仿真显示文摘针对无线通信环境的复杂特性,为了实现无线通信系统快速准确的建模仿真,应用GNU Radio和USRP组成的软件无线电系统作为新的建模仿真方法。介绍并分析该方法的软件特性和硬件架构,进行MPSK调制系统在仿真信道和实际信道下链路模型的误码率对比实验,并在包含实际无线信道的链路模型基础上,设计并实现了一套无线视频流传输原型系统。分析和实验结果表明,新方法能够快速实现无线通信系统原型,将实际无线信道纳入系统模型中,从而获得更准确的仿真和分析结果。该方法适用于对通信协议标准及系统有定制化需求、针对传输环境复杂的无线通信系统研究开发。 | 杨宏 孔耀晖 茹晨光 李珂 潘赟 | 2013 | 现代电子技术2013，36，18： | 21 |
| 7 | Intraperitoneal perfusion of cytokine-induced killer cells with local hyperthermia for advanced hepatocellular carcinoma显示文摘AIM:To study the effect and tolerance of intraperitoneal perfusion of cytokine-induced killer(CIK) cells in combination with local radio frequency(RF) hyperthermia in patients with advanced primary hepatocellular carcinoma(HCC).METHODS:Patients with advanced primary HCC were included in this study.CIK cells were perfused intraperitoneal twice a week,using 3.2 × 10 9 to 3.6 × 10 9 cells each session.Local RF hyperthermia was performed 2 h after intraperitoneal perfusion.Following an interval of one month,the next course of treatment was administered.Patients received treatment until disease progression.Tumor size,immune indices(CD3 +,CD4 +,CD3 + CD8 +,CD3 + CD56 +),alpha-fetoprotein(AFP) level,abdominal circumference and adverse events were recorded.Time to progression and overall survival(OS) were calculated.RESULTS:From June 2010 to July 2011,31 patients diagnosed with advanced primary HCC received intraperitoneal perfusion of CIK cells in combination with local RF hyperthermia in our study.Patients received an average of 4.2 ± 0.6 treatment courses(range,1-8 courses).Patients were followed up for 8.3 ± 0.7 mo(range,2-12 mo).Following combination treatment,CD4 +,CD3 + CD8 + and CD3 + CD56 + cells increased from 35.78% ± 3.51%,24.61% ± 4.19% and 5.94% ± 0.87% to 45.83% ± 2.48%(P = 0.016),39.67% ± 3.38%(P = 0.008) and 10.72% ± 0.67%(P = 0.001),respectively.AFP decreased from 167.67 ± 22.44 to 99.89 ± 22.05 ng/mL(P = 0.001) and abdominal circumference decreased from 97.50 ± 3.45 cm to 87.17 ± 4.40 cm(P = 0.002).The disease control rate was 67.7%.The most common adverse events were low fever and slight abdominal erubescence,which resolved without treatment.The median time to progression was 6.1 mo.The 3-,6-and 9-mo and 1-year survival rates were 93.5%,77.4%,41.9% and 17.4%,respectively.The median OS was 8.5 mo.CONCLUSION:Intraperitoneal perfusion of CIK cells in combination with local RF hyperthermia is safe,can efficiently improve immunological status,and may prolong survival in HCC patients. | Xiao-Pu Wang Meng Xu Hong-Fei Gao Jian-Fu Zhao Ke-Cheng Xu | 2013 | World Journal of Gastroenterology2013，19，19： | 20 |
| 8 | 调频频段数字音频广播系统研究显示文摘2013年8月国家广电总局颁布了调频频段数字音频广播标准,给出了我国调频频段广播数字化的方案,此方案以我国频率规划的现状为基础,进行系统参数和信道编码方式的设计、选择,具有自主知识产权。本文介绍了此标准定义的调频频段数字音频广播系统及其系统性能。 | 高鹏 盛国芳 吴智勇 邸娜 | 2014 | 广播电视信息2014，，1： | 18 |
| 9 | 基于GPRS的远程数据的无线传输显示文摘提出一个基于GPRS(G enera l Packet R ad io Serv ice)网络的远程数据传输方案,将远端的各种传感器数据及时发送给监控中心,同时实现了远程控制、远程唤醒等移动终端的功能,监视被监控点的动态信息,并给出了数据链接的AT命令和数据传输时间的实验数据. | 陈够喜 张永梅 王博 | 2006 | 中北大学学报(自然科学版)2006，27，3： | 18 |
| 10 | 单极型马赫-曾德尔调制器的互调失真分析显示文摘针对单极型马赫曾德尔电光调制器在Radio over Fiber(RoF)和副载波复用系统中的应用,讨论了输入两路射频信号的情形,给出了电光调制器互调失真的严格通用解析解。该解析解可用于表示任意阶的互调失真项和谐波项。数值结果表明了该解析解的正确性。分析结果表明,调制器的三阶互调失真与调制器偏置相移无关,只与输入射频信号的调制系数有关,并且当外加偏置电压等于调制器的半波电压时,只存在偶数阶的失真项。根据该解析解,可方便地设计模拟光通信系统,精确地预计外调制器的非线性特征,优化系统性能。 | 池灏 章献民 沈林放 | 2006 | 光学学报2006，26，11： | 15 |
| 11 | A New RFID Anti-collision Algorithm Based on the Q-Ary Search Scheme显示文摘Deterministic tree-based algorithms are mostly used to guarantee that all the tags in the reader field are successfully identified, and to achieve the best performance. Through an analysis of the deficiencies of existing tree-based algorithms, a Q-ary search algorithm was proposed. The Q-ary search(QAS) algorithm introduced a bit encoding mechanism of tag ID by which the multibit collision arbitration was implemented. According to the encoding mechanism, the collision cycle was reduced. The theoretical analysis and simulation results showed that the proposed MS algorithm overcame the shortcoming of existing tree-based algorithms and exhibited good performance during identification. | SU Jian WEN Guangjun HONG Danfeng | 2015 | Chinese Journal of Electronics2015，24，4： | 13 |
| 12 | Radio Propagation and Wireless Coverage of LSAA-Based 5G Millimeter-Wave Mobile Communication Systems显示文摘Millimeter-wave(mm Wave) communications will be used in fifth-generation(5G) mobile communication systems, but they experience severe path loss and have high sensitivity to physical objects, leading to smaller cell radii and complicated network architectures. A coverage extension scheme using large-scale antenna arrays(LSAAs) has been suggested and theoretically proven to be cost-efficient in combination with ultradense small cell networks. To analyze and optimize the LSAA-based network deployments, a comprehensive survey of recent advances in statistical mmWave channel modeling is first presented in terms of channel parameter estimation, large-scale path loss models, and small-scale cluster models. Next, the measurement and modeling results at two 5G candidate mmWave bands(e.g., 28 GHz and 39 GHz) are reviewed and compared in several outdoor scenarios of interest, where the propagation characteristics make crucial contributions to wireless network designs. Finally, the coverage behaviors of systems employing a large number of antenna arrays are discussed, as well as some implications on future mmWave cellular network designs. | Haiming Wang Peize Zhang Jing Li Xiaohu You | 2019 | China Communications2019，16，5： | 12 |
| 13 | Hyperglycemia is a significant prognostic factor of hepatocellular carcinoma after curative therapy显示文摘AIM:To evaluate whether metabolic factors are related to distant recurrence of hepatocellular carcinoma(HCC) and survival after curative treatment.METHODS:This retrospective study included 344 patients whose HCC was treated curatively by radiofrequency ablation(RFA) therapy.The mean age was 67.6 years and the mean observation period was 4.04 years.The etiological background of liver disease was hepatitis B virus infection in 30,hepatitis C virus infection in 278,excessive alcohol drinking in 9,and other in 27 patients.The Child-Pugh classification grade was A(n = 307) or B(n = 37).The number of HCC nodules was one in 260,two in 61,and three in 23 patients.For surveillance of HCC recurrence after curative therapy with RFA,patients were radiologically evaluated every 3 mo.Factors associated with distant recurrence of HCC or survival were studied.RESULTS:Inadequate maintenance of blood glucose in diabetic patients was associated with higher incidence of distant recurrence.The 1-,2-,and 3-year recurrence rates were significantly higher in diabetic patients with inadequate maintenance of blood glucose compared with the others:50.6% vs 26.8%,83.5% vs 54.4%,and 93.8% vs 73.0%,respectively(P = 0.0001).Inadequate maintenance of blood glucose was an independent predictor of distant recurrence [adjusted relative risk 1.97(95%CI,1.33-2.91),(P = 0.0007)] after adjustment for other risk factors,such as number of HCC nodules [2.03(95%CI,1.51-2.73),P < 0.0001] and initial level of serum alpha fetoprotein(AFP) [1.43(95%CI,1.04-1.97),P = 0.028].Obesity was not an independent predictor of recurrence.The incidence of distant recurrence did not differ between diabetic patients with adequate maintenance of blood glucose and non-diabetic patients.Among 232 patients who had HCC recurrence,138 had a second recurrence.The 1-,2-,and 3-year rates of second recurrence were significantly higher in diabetic patients with inadequate maintenance of blood glucose than in the others:9.0% vs 5.9%,53.1% vs 24.3%,and 69.6% vs 42.3%,respectively(P = 0.0021).Inadequate maintenance of blood glucose in diabetic patients [1.99(95%CI,1.23-3.22),P = 0.0049] and presence of multiple HCC nodules [1.53(95%CI,1.06-2.22),P = 0.024] were again significantly associated with second HCC recurrence.Inadequate maintenance of blood glucose in diabetic patients was also a significant predictor of poor survival [2.77(95%CI,1.38-5.57),P = 0.0046] independent of excessive alcohol drinking [6.34(95%CI,1.35-29.7),P = 0.019],initial level of serum AFP [3.40(95%CI,1.88-6.18),P < 0.0001] and Child-Pugh classification grade B [2.24(95%CI,1.12-4.46),P = 0.022].Comparing diabetic patients with inadequate maintenance of blood glucose vs the others,the 1-,2-,and 3-year survival rates were significantly lower in diabetic patients with inadequate maintenance of blood glucose:92% vs 99%,85% vs 96%,and 70% vs 92%,respectively(P = 0.0003).CONCLUSION:Inadequate maintenance of blood glucose in diabetic patients is a significant risk factor for recurrence of HCC and for poor survival after curative RFA therapy. | Takanori Hosokawa Masayuki Kurosaki Kaoru Tsuchiya Shuya Matsuda Masaru Muraoka Yuichiro Suzuki Nobuharu Tamaki Yutaka Yasui Toru Nakata Takashi Nishimura Shoko Suzuki Ken Ueda Hiroyuki Nakanishi Jun Itakura Yuka Takahashi Namiki Izumi | 2013 | World Journal of Gastroenterology2013，19，2： | 12 |
| 14 | 基于GNU Radio和USRP2的未知信号检测显示文摘运用开源软件无线电(GNU's Not Unix Radio,GNU Radio)技术和与之配套的通用软件无线电外设(TheSecond-generation Universal Software Radio Peripheral,USRP2),设计出了未知无线电信号自动检测系统。系统采用能量检测法,能够快速识别一定频段内未知无线电信号,并记录其带宽、中心频率和起止时间,同时存储相应的同相正交(Inphaseand Quadrature,IQ)数据,为后续载频的精确估计提供必要的参数。在实际测试中发现,该系统检测速度快、准确率高,对未知强信号检测具有一定的可靠性和实用性。 | 陈通海 李景春 郑娜 郝静 | 2012 | 无线电工程2012，42，12： | 11 |
| 15 | Commissioning progress of the FAST显示文摘The Five-hundred-meter Aperture Spherical radio Telescope(FAST) was completed with its main structure installed on September 25, 2016, after which it entered the commissioning phase. This paper aims to introduce the commissioning progress of the FAST over the past two years. To improve its operational reliability and ensure effective observation time, FAST has been equipped with a real-time information system for the active reflector system and hierarchical commissioning scheme for the feed support system, which ultimately achieves safe operation of the two systems. For meeting the high-performance indices, a highprecision measurement system was set up based on the effective control methods that were implemented for the active reflector system and feed support system. Since the commissioning of the FAST, a low-frequency ultra-wideband receiver and 19-beam1.05-1.45 GHz receiver have been mainly used. Telescope efficiency, pointing accuracy, and system noise temperature were completely tested and ultimately achieved the acceptance indices of the telescope. The FAST has been in the process of national acceptance preparations and has begun to search for pulsars. In the future, it will still strive to improve its capabilities and expand its application prospects. | Peng Jiang YouLing Yue HengQian Gan Rui Yao Hui Li GaoFeng Pan JingHai Sun DongJun Yu HongFei Liu NingYu Tang Lei Qian JiGuang Lu Jun Yan Bo Peng ShuXin Zhang QiMing Wang Qi Li Di Li | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，5： | 11 |
| 16 | LSTM neural network for solar radio spectrum classification显示文摘A solar radio spectrometer records solar radio radiation in the radio waveband. Such solar radio radiation spanning multiple frequency channels and over a short time period could provide a solar radio spectrum which is a two dimensional image. The vertical axis of a spectrum represents frequency channel and the horizontal axis signifies time. Intrinsically, time dependence exists between neighboring columns of a spectrum since solar radio radiation varies continuously over time. Thus, a spectrum can be treated as a time series consisting of all columns of a spectrum, while treating it as a general image would lose its time series property. A recurrent neural network(RNN) is designed for time series analysis. It can explore the correlation and interaction between neighboring inputs of a time series by augmenting a loop in a network.This paper makes the first attempt to utilize an RNN, specifically long short-term memory(LSTM), for solar radio spectrum classification. LSTM can mine well the context of a time series to acquire more information beyond a non-time series model. As such, as demonstrated by our experimental results, LSTM can learn a better representation of a spectrum, and thus contribute better classification. | Long Xu Yi-Hua Yan Xue-Xin Yu Wei-Qiang Zhang Jie Chen Ling-Yu Duan | 2019 | Research in Astronomy and Astrophysics2019，19，9： | 10 |
| 17 | 基于GNU Radio和USRP的路测仪设计显示文摘提出了一种采用GNU Radio技术及与其配套的硬件前端USRP设计和实现GSM900M路测仪的设计方法,配合使用全球定位系统GPS就能够实现采集信号电平、获得信令数据等功能。该系统设备成本低,使用纯软件的信号处理,具有很大的灵活性;采用高级语言进行系统开发,扩展性和可移植性强,开发周期短,降低了系统的维护和升级成本。最后通过实测验证了该系统在实际环境中的可行性和有效性。 | 黄嘉崴 钟晓峰 王京 | 2011 | 通信技术2011，44，4： | 10 |
| 18 | Intelligent Wireless Communications Enabled by Cognitive Radio and Machine Learning显示文摘The ability to intelligently utilize resources to meet the need of growing diversity in services and user behavior marks the future of wireless communication systems. Intelligent wireless communications aims at enabling the system to perceive and assess the available resources, to autonomously learn to adapt to the perceived wireless environment, and to reconfigure its operating mode to maximize the utility of the available resources. The perception capability and reconfigurability are the essential features of cognitive radio while modern machine learning techniques project great potential in system adaptation. In this paper, we discuss the development of the cognitive radio technology and machine learning techniques and emphasize their roles in improving spectrum and energy utility of wireless communication systems. We describe the state-of-the-art of relevant techniques, covering spectrum sensing and access approaches and powerful machine learning algorithms that enable spectrum and energy-efficient communications in dynamic wireless environments. We also present practical applications of these techniques and identify further research challenges in cognitive radio and machine learning as applied to the existing and future wireless communication systems. | Xiangwei Zhou Mingxuan Sun Geoffrey Ye Li Biing-Hwang (Fred) Juang | 2018 | China Communications2018，15，12： | 10 |
| 19 | HD Radio技术在FM频段的应用分析显示文摘本文就HD Radio技术应用于FM频段部分的频谱结构、发射机改造等方面的内容进行阐述,并结合各国的相应机构对该系统进行的实验室及场地测试结果,分析说明该技术在FM频段应用的情况。 | 吴智勇 高鹏 邸娜 | 2008 | 广播与电视技术2008，35，11： | 10 |
| 20 | Li-Si合金中间相作为锂离子电池负极材料的研究(英文)显示文摘采用基于密度泛函理论的第一性原理平面波赝势方法计算了Li-Si各种合金相的物理性质和电化学性能。结果表明:除了在反应过程中生成传统的固态电解质SEI膜之外,形成的Li12Si7合金相也是部分导致首次不可逆容量损失的重要原因。另外,采用射频磁控溅射制备了纯Si薄膜电极,并运用XRD、循环伏安CV、恒流充放电CC表征和测试了材料的结构和电化学性能,结果表明首次不可逆容量损失非常大,无定型结构能有效抑制体积膨胀和改善循环性能。 | 侯贤华 胡社军 汝强 张志文 | 2010 | 稀有金属材料与工程2010，39，12： | 9 |
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