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One-bit compressed sensing recovery algorithm robust to perturbation

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The Journal of China Universities of Posts and Telecommunications 2018年第1期25卷 62-69页

作者： Cui Yupeng Xu Wenbo lin jiaru Key Laboratory of Universal Wireless Communication Beijing University of Posts and Telecommunications

One-bit compressed sensing （CS） technology reconstructs the sparse signal when the available measurements are reduced to only their sign-bit. It is well known that CS reconstruction should know the measurement matrix exactly to obtain a correct result. However, the measurement matrix is probably perturbed in many practical scenarios. An iterative algorithm called perturbed binary iterative hard thresholding （PBIHT） is proposed to reconstruct the sparse signal from the binary measurements （sign measurements） where the measurement matrix experiences a general perturbation. The proposed algorithm can reconstruct the original data without any prior knowledge about the perturbation. Specifically, using the ideas of the gradient descent, PBIHT iteratively estimates signal and perturbation until the estimation converges. Simulation results demonstrate that, under certain conditions, PBIHT improves the performance of signal reconstruction in the perturbation scenario.

关键词： one-bit compressed sensing reconstruction algorlthm perturbation robust

Convergence analysis and performance optimization of parallel concatenated systematic polar code

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The Journal of China Universities of Posts and Telecommunications 2018年第2期25卷 1-9页

作者： Liu Zhenzhen Niu Kai Dong Chao lin jiaru School of Information and Communication Engineering Beijing University of Posts and Telecommunications

Similar to the analysis of Turbo codes, the parallel concatenated systematic polar code （PCSPC） can also be analyzed by the extrinsic information transfer （EXIT） chart. The convergence of the iterative decoding based on soft cancellation （SCAN） and belief propagation （BP） of PCSPC are analyzed by the EXIT chart. Analysis shows that SCAN decoder is more appropriate than BP decoder for this iterative decoding structure in terms of complexity. In addition, the weight coefficients of the iterative decoding structure are optimized by the simulated-EXIT （S- EXIT） chart, which improves the performance of PCSPC.

关键词： PCSPC EXIT chart SCAN decoder BP decoder weight coefficient

Scaling Factor Optimization of Turbo-Polar Iterative Decoding

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China Communications 2018年第6期15卷 169-177页

作者： Zhenzhen Liu Kai Niu jiaru lin Jingyuan Sun Hao Guan Beijing University of Posts and Telecommunications Beijing 100876China Nokia Shanghai Bell Co. Ltd.Beijing 100876China

In this paper, we investigate the weighted iterative decoding to improve the performance of turbo-polar code. First of all, a minimum weighted mean square error criterion is proposed to optimize the scaling factors(SFs). Secondly, for two typical iterative algorithms,such as soft cancellation(SCAN) and belief propagation(BP) decoding, genie-aided decoders are proposed as the ideal reference of the practical decoding. Guided by this optimization framework, the optimal SFs of SCAN or BP decoders are obtained. The bit error rate performance of turbo-polar code with the optimal SFs can achieve 0.3 dB or 0.7 dB performance gains over the standard SCAN or BP decoding respectively.

关键词： turbo-polar code BP decoder SCAN decoder mean square error scaling factors

Shenweifang-containing serum inhibits transforming growth factor-β1–induced myofibroblast differentiation in normal rat kidney interstitial fibroblast cells

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Journal of Traditional Chinese Medicine 2022年第1期42卷 39-48页

作者： lin jiaru WANG Li CHEN Bo OU Santao QIN Jianhua FAN Junming Department of Nephrology the Affiliated Hospital of Southwest Medical UniversityLuzhou 646000China Nephropathy Clinical Medical Research Center of Sichuan Province Luzhou 646000China Chengdu University of Traditional Chinese Medicine Chengdu 610075China Central Laboratory the Affiliated Chinese Medicine Hospital of Southwest Medical UniversityLuzhou 646000China Central Laboratory Affiliated Chinese Medicine Hospital of Southwest Medical UniversityLuzhouSichuan 646000China Chengdu Medical College ChengduSichuan 610500China Southwest Medical University Luzhou 646000China

OBJECTIVE:To investigate the efficacy of Shenweifang(SWF)-containing serum on transforming growth factor(TGF)-β1–induced fibroblast-myofibroblast transition in normal rat kidney interstitial fibroblast cells(NRK-49 F).METHODS:Sprague-Dawley rats were gavaged with one of five solutions:(a)saline;(b)saline plus low-dose SWF;(c)saline plus medium-dose SWF;(d)saline plus highdose SWF;and(e)saline plus ***-49 F cells were treated with TGF-β1 and cultured using serum from the gavaged ***:TGF-β1 treatment increased the expression ofα-smooth muscle actin,proliferating cell nuclear antigen,collagenⅠ,Smad3,mitogen-activated protein kinase(MAPK)10,and c-Jun N-terminal kinase(JNK)3 and induced abnormalities in cell morphology,cell cycle progression,and cell ***:SWF-or valsartan-containing serum corrected(or partially corrected)TGF-β1–induced abnormal changes in this in vitro ***-containing serum reversed abnormalities in morphology,cell cycle progression,and proliferation in TGF-β1–treated NRK-49F cells,probably by blocking the TGF-β1/Smads and TGF-β1/MAPK/JNK pathways.

关键词： fibrosis transforming growth factor beta1 Smad proteins mitogen-activated protein kinases JNK mitogen-activated protein kinases drug-containing serum Shenweifang

Unsourced Multiple Access for 6G Massive Machine Type Communications

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China Communications 2022年第3期19卷 70-87页

作者： Yuanjie Li Jincheng Dai Zhongwei Si Kai Niu Chao Dong jiaru lin Sen Wang Yifei Yuan Key Laboratory of Universal Wireless Communications Beijing University of Posts and TelecommunicationsBeijing 100876China China Mobile Research Institute Beijing 100053China

Unsourced multiple access(UMA)is a multi-access technology for massive,low-power,uncoordinated,and unsourced Machine Type Communication(MTC)*** ensures transmission reliability under the premise of high energy *** on the analysis of the 6G MTC key performance indicators(KPIs)and scenario characteristics,this paper summarizes its requirements for radio access *** this,the existing multiple access models are analyzed under these standards to determine UMA's advantages for 6G MTC according to its design *** critical technology of UMA is the design of its multiple-access coding ***,the existing UMA coding schemes from different coding paradigms are further summarized and *** particular,this paper comprehensively considers the energy efficiency and computational complexity of these schemes,studies the changes of the above two indexes with the increase of access scale,and considers the trade-off between the *** is revealed by the above analysis that some guiding rules of UMA coding ***,the open problems and potentials in this field are given for future research.

关键词： unsourced multiple access machine type communications 6G massive random access uncoordinated

A bio-inspired approach for cognitive radio networks

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Chinese Science Bulletin 2012年第28期57卷 3723-3730页

作者： HE ZhiQiang NIU Kai QIU Tao SONG Tao XU WenJun GUO Li lin jiaru Key Laboratoty of Universal Wireless Communications Ministry of EducationBeijing University of Posts and TelecommunicationsBeijing 100876China

The recent increasing interest in cognitive radio networks has motivated the study and development of new approaches capable of coping with the intrinsic challenges of this kind of network,such as dynamic spectrum availability,distributed and heterogeneous network architectures,and soaring *** bio-inspired approaches,with appealing characteristics such as autonomy,adaptation and collective intelligence of collaborative individuals,have been extensively *** paper presents a comprehensive survey of bio-inspired approaches for cognitive radio networks,emphasizing their domains of ***,ant colony optimization and particle warm optimization are further investigated with examples and numerical simulation.

关键词：无线电网络仿生网络架构综合调查数值模拟蚁群算法可用性复杂性

Tighter bounds of multihop relayed communications in Nakagami-m fading

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Frontiers of Electrical and Electronic Engineering in China 2010年第4期5卷 470-474页

作者： Lianhai WU jiaru lin Kai NIU Zhiqiang HE Key Laboratory of Universal Wireless Communications of Ministry of Education Beijing University of Posts and TelecommunicationsBeijing 100876China

Closed-form bounds for the end-to-end performance of multihop communications with non-regenerative relays over Nakagami-m fading channels are *** and lower bounds of the end-to-end signal-to-noise ratio(SNR)are first developed by using the ***,the probability density functions(PDFs),the cumulative distribution functions,and the momentgenerating functions(MGFs)of the bounds are *** these results,the bounds for the outage and average bit error probability(ABEP)are *** and simulation results are executed to validate the tightness of the proposed bounds.

关键词： average bit error probability(ABEP) multihop relayed communications Nakagami-m fading outage probability

MIMO Capacity Bounds with Doubly Correlated Rician Channel in Geometrical Channel Model

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China Communications 2010年第5期7卷 9-13页

作者： Li Yonghua He Zhiqiang Lv Tiejun lin jiaru Key Laboratory of Universal Wireless Comunications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 P. R. China

MIMO system can provide higher capacity in independent conditions. When the spatial-temporal fading correlation exists, the capacity may decrease. In this paper, the geometrical MIMO channel model is presented with Rician factor. Based on the MIMO ergodic capacity, the capacity bounds are derived with arbitrary finite number of antennas. The bounds are derived in the exact expressions in doubly correlated MIMO R/clan channel. Then a simple expression for the capacity bounds is attained for the high SNR. Finally, the tightness of derived bounds is verified by Monte Carlo simulation.

关键词： MIMO Rician capacity bounds

Scalable synthesis of lipid nanoparticles for nucleic acid drug delivery using an isometric channel-size enlarging strategy

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Nano Research 2024年第4期17卷 2899-2907页

作者： Zesen Ma Haiyang Tong Sijin lin Li Zhou Demeng Sun Baoqing Li Changlin Tian jiaru Chu Department of Precision Machinery and Precision Instrumentation University of Science and Technology of ChinaHefei 230027China Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of ChinaHefei 230027China Science Island Branch Graduate SchoolUniversity of Science and Technology of ChinaHefei 230026China Anhui Provincial Key Laboratory of High Field Magnetic Resonance Imaging High Magnetic Field LaboratoryHefei Institute of Physical ScienceChinese Academy of SciencesHefei 230031China Anhui Provincial Engineering Laboratory of Peptide Drugs University of Science and Technology of ChinaHefei 230027China School of Biomedical Engineering Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaSuzhou 215127China

Lipid nanoparticles(LNPs)have emerged as highly effective delivery systems for nucleic acid-based ***,the broad clinical translation of LNP-based drugs is hampered by the lack of robust and scalable synthesis techniques that can consistently produce formulations from early development to clinical *** this work,we proposed a method to achieve scalable synthesis of LNPs by scaling inertial microfluidic mixers isometrically in three ***,a theoretical predictive method,which controls the mixing time to be equal across different chips,is developed to ensure consistent particle size and size distribution of the synthesized *** loaded with small interfering RNA(siRNA)were synthesized at different flow rates,exhibiting consistent physical properties,including particle size,size distribution and encapsulation *** work provides a practical approach for scalable synthesis of LNPs consistently,offering the potential to accelerate the transition of nucleic acid drug development into clinical application.

关键词： lipid nanoparticles nucleic acid delivery microfluidics scalable synthesis consistent particle size