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| 1 | Adaptive suppression of passive intermodulation in digital satellite transceivers显示文摘For the performance issues of satellite transceivers suffering passive intermodulation interference,a novel and effective digital suppression algorithm is presented in this paper.In contrast to analog approaches,digital passive intermodulation(PIM) suppression approaches can be easily reconfigured and therefore are highly attractive for future satellite communication systems.A simplified model of nonlinear distortion from passive microwave devices is established in consideration of the memory effect.The multiple high-order PIM products falling into the receiving band can be described as a bilinear predictor function.A suppression algorithm based on a bilinear polynomial decorrelated adaptive filter is proposed for baseband digital signal processing.In consideration of the time-varying characteristics of passive intermodulation,this algorithm can achieve the rapidness of online interference estimation and low complexity with less consumption of resources.Numerical simulation results show that the algorithm can effectively compensate the passive intermodulation interference,and achieve a high signal-to-interference ratio gain. | Lu TIAN Hangcheng HAN Wenhui CAO Xiangyuan BU Shuai WANG | 2017 | Chinese Journal of Aeronautics2017，30，3： | 4 |
| 2 | Energy Efficiency Optimization for D2D Communications Based on SCA and GP Method显示文摘In this paper, we propose an energy-efficient power control scheme for device-to-device(D2D) communications underlaying cellular networks, where multiple D2D pairs reuse the same resource blocks allocated to one cellular user. Taking the maximum allowed transmit power and the minimum data rate requirement into consideration, we formulate the energy efficiency maximization problem as a non-concave fractional programming(FP) problem and then develop a two-loop iterative algorithm to solve it. In the outer loop, we adopt Dinkelbach method to equivalently transform the FP problem into a series of parametric subtractive-form problems, and in the inner loop we solve the parametric subtractive problems based on successive convex approximation and geometric programming method to obtain the solutions satisfying the KarushKuhn-Tucker conditions. Simulation results demonstrate the validity and efficiency of the proposed scheme, and illustrate the impact of different parameters on system performance. | Xiaozheng Gao Hangcheng Han Kai Yang Jianping An | 2017 | China Communications2017，14，3： | 3 |
| 3 | Diagnostic accuracy of endoscopic ultrasound-guided fine-needle aspiration for solid pancreatic lesion: a systematic review显示文摘 | Jiong Chen Renbao Yang Yin Lu Yunlian Xia Hangcheng Zhou | 2012 | Journal of Cancer Research and Clinical Oncology2012，，9： | 2 |
| 4 | Combined algorithm of acquisition and anti-jamming based on SFT显示文摘A communication and navigation receiver is required to remove hostile jamming signals and synchronize receiving signals effectively especially for satellite communication and navigation whose resources are becoming more and more limited. This paper proposes a novel signal receiving method by combining the processes of anti-jamming and synchronization to reduce the overall computational complexity at the expense of slightly affecting the detection probability, which is analyzed in detail by derivations.Furthermore, this paper introduces sparse Fourier transformation(SFT) into the proposed algorithm to replace fast Fourier transformation(FFT) so as to further reduce the calculation time especially in large frequency offset environments. | Ying Ma Xiangyuan Bu Hangcheng Han Qiaoxian Gong | 2015 | Journal of Systems Engineering and Electronics2015，26，3： | 1 |
| 5 | E-CAT: Evaluating Crowdsourced Android Testing显示文摘 | Hao Lian Zernin Qin Hangcheng Song Tieke He | 2018 | 国际计算机前沿大会会议论文集2018，，1： | 0 |
| 6 | Design of a(480,240)CMOS Analog Low-Density Parity-Check Decoder显示文摘Digital low-density parity-check(LDPC) decoders can hardly meet the power-limits brought by the new application scenarios. The analog LDPC decoder, which is an application of the analog computation technology, is considered to have the potential to address this issue to some extent. However, due to the lack of automation tools and analog stopping criteria, the analog LDPC decoders suffer from costly handcraft design and additional decoding delay, and are not feasible to practical applications. To address these issues, a decoder architecture using reusable building blocks is designed to lower the handcraft design, and a probability stopping criterion that is specially designed for analog decoder is further planned and implemented to reduce the decoding delay. Then, a(480,240) CMOS analog LDPC decoder is designed and fabricated in a 0.35-μm CMOS technology. Experimental results show that the decoder prototype can achieve 50 Mbps throughput when the power consumption is about 86.3m W, and the decoding delay can be reduced by at most 93% compared with using the preset maximum decoding delay in existing works. | Hao Zheng Zhe Zhao Xiangming Li Hangcheng Han | 2017 | China Communications2017，14，8： | 0 |
| 7 | Preface to Special Issue: Cancer epidemiology, risk factors and screening显示文摘Cancer continues to be one of the leading causes of morbidity and mortality worldwide, posing significant challenges to public health systems. The International Agency for Research on Cancer(IARC) revealed an increase in the global cancer burden, with 19.3 million new cases and 10 million deaths in 2020 alone(1). | Binghe Xu Hangcheng Xu | 2023 | Chinese Journal of Cancer Research2023，35，6： | 0 |
| 8 | Breast cancer: Epidemiology, risk factors and screening显示文摘Breast cancer is a global health concern with a significant impact on the well-being of women. Worldwide, the past several decades have witnessed changes in the incidence and mortality of breast cancer. Additionally,epidemiological data reveal distinct geographic and demographic disparities globally. A range of modifiable and non-modifiable risk factors are established as being associated with an increased risk of developing breast cancer.This review discusses genetic, hormonal, behavioral, environmental, and breast-related risk factors. Screening plays a critical role in the effective management of breast cancer. Various screening modalities, including mammography,ultrasound, magnetic resonance imaging(MRI), and physical examination, have different applications, and a combination of these modalities is applied in practice. Current screening recommendations are based on factors including age and risk, with a significant emphasis on minimizing potential harms to achieve an optimal benefits-to-harms ratio. This review provides a comprehensive insight into the epidemiology, risk factors, and screening of breast cancer. Understanding these elements is crucial for improving breast cancer management and reducing its burden on affected individuals and healthcare systems. | Hangcheng Xu Binghe Xu | 2023 | Chinese Journal of Cancer Research2023，35，6： | 0 |
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