Error performance of multi-branch dual-hop PF cooperative systems by Guangqiu LI, Jiayun DONG, Tao JIANG

“…Design of multi-branch dual-hop phase-only forward(PF)cooperative systems with continuous phase frequency shift keying(CPFSK)modulation needs to determine the number of branch and modulation index.The usual solution of determining the above parameters is the time-consuming and inefficient computer simulation.An efficient solution of determining these parameters is theoretical analysis method.Semi-analytical expressions for the average bit error rate(ABER)of multi-branch dual-hop PF cooperative systems in conjunction with discrimination detection CPFSK over time-selective Rayleigh fading channels was presented.Two cases with and without antenna selection at the relays and maximum-ratio combining(MRC)receive diversity at the destination were considered.The simulation results show that numerical calculation results and simulation results for the ABERs of PF，discrimination detection,CPFSK cooperative systems are consistent and show that the above ABER theory results of CPFSK cooperative systems can be used to design PF cooperative systems.…”
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Noninvasive in Vivo Imaging of Protein Kinase a Activity by Jan Øivind Moskaug, Harald Carlsen, Rune Blomhoff

“…Protein kinases play pivotal roles in almost all cellular signaling pathways, and modulation of their activity is desirable in both disease and studies of function. …”
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Effect of propofol and ciprofol in patients undergoing bronchoscopy: protocol for a double-blind, randomised controlled trial by Fang Chen, Cheng Li, Dongliang Li, Jinxuan Tang, Jiayu Huang

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Two-dimensional anion-rich NaCl2 crystal under ambient conditions by Ruobing Yi, Jie Jiang, Yizhou Yang, Yueyu Zhang, Siyan Gao, Yimin Zhao, Jiahao Hu, Xuchang Su, Xinming Xia, Bingquan Peng, Fangfang Dai, Pei Li, Zhao Guan, Haijun Yang, Fangyuan Zhu, Jiefeng Cao, Zhe Wang, Haiping Fang, Lei Zhang, Liang Chen

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Resting-state functional connectivity between the frontoparietal network and the default mode network is aberrantly increased in ankylosing spondylitis by Dong Liu, Churong Lin, Budian Liu, Yanli Zhang, Yutong Jiang, Jieruo Gu, Ou Jin

“…The frontoparietal network (FPN) is known as a pain modulation hub, with key nodes dorsolateral prefrontal cortex (dlPFC) and ventrolateral prefrontal cortex (vlPFC) participating in the pain modulation and reappraisal process. …”
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Kinetic Profiles of Inflammatory Mediators in the Conjunctival Sac Fluid of Patients upon Photorefractive Keratectomy by Veronica Tisato, Paolo Perri, Erika Rimondi, Elisabetta Melloni, Giuseppe Lamberti, Daniela Milani, Paola Secchiero, Giorgio Zauli

“…In this context, the modulation of cytokines/chemokines in the conjunctival sac fluid and their role in the maintenance of the corneal microenvironment during the healing process upon refractive procedures has not been deeply investigated. …”
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Vibration Response of the Planetary Gears with a Float Sun Gear and Influences of the Dynamic Parameters by Yinghui Liu, Dong Zhen, Huibo Zhang, Hao Zhang, Zhanqun Shi, Fengshou Gu

“…By comparing the dynamic responses under different loads and rotation speeds, the phase modulation is studied in detail. Finally, the sun gear fault is introduced, and the phase modulation is analyzed in different fault degrees. …”
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Transcriptional Targeting of Mature Dendritic Cells with Adenoviral Vectors via a Modular Promoter System for Antigen Expression and Functional Manipulation by Ilka Knippertz, Andrea Deinzer, Jan Dörrie, Niels Schaft, Dirk M. Nettelbeck, Alexander Steinkasserer

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Vibration Characteristic Analysis of Spur Gear System with Coupled Damage by Li Xike Wang Jian Chen Tao Zhang Jun

“…The results show that crack-wear coupled damage induce amplitude modulation and frequency modulation of the system vibration，and it will produce more obvious mesh impact than a single damage.…”
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Local versus nonlocal barycentric interactions in 1D agent dynamics by Max-Olivier Hongler, Roger Filliger, Olivier Gallay

“…Depending on the span and the modulation of the interaction range, we analytically observe a transition from a purely diffusive regime without definite pattern to a flocking evolution represented by a solitary wave traveling with constant velocity.…”
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Energy-Model-Based Optimal Communication Systems Design for Wireless Sensor Networks by Ye Li, Dengyu Qiao, Zhao Xu, Da Xu, Fen Miao, Yuwei Zhang

“…We connect the baseband parameters such as modulation level, data rate, bandwidth, and propagation distance. with the energy consumption of RF front end for WSN. …”
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Performance of FTH-PPM multiple access technology in 60 GHz wireless communication system by Chen SHEN, Xuehua LI

“…Aiming at the problem of multiple access interference in 60 GHz pulse wireless communication system,the performance of system based on FTH-PPM multiple access scheme was studied.Under the IEEE 802.15.3.c channel model,the relationship between the bit error rate performance of the system and the number of frequency hopping codes,the signal to noise ratio and the number of users were analyzed.The characteristics of FTH-PPM multiple access modulation system were studied and compared with TH-PPM and TH-PAM schemes.The simulation results show that the system can meet the required bit error rate by changing the signal to noise ratio,the number of hops and the number of users.At the same time,the BER performance of FTH-PPM is better than that of TH-PAM and TH-PPM.The system can select the appropriate multiple access modulation mode according to the value of the pulse duty cycle.The research will provide technical reference for the application of 60 GHz pulse wireless communication.…”
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Effects of Fit Clearance Between the Outer Ring and the Housing on Vibration Characters of the Gear-shaft-bearing System by Xu Lijin, Chen Qing, Dai Peng, Wang Fengtao

“…The results show that when there are fit clearances on the bearing, the amplitude modulation of the bearing outer raceway to the system time-domain response is exacerbated. …”
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Day and Night GSH and MDA Levels in Healthy Adults and Effects of Different Doses of Melatonin on These Parameters by Shilpa Chakravarty, Syed Ibrahim Rizvi

“…The present work was undertaken to study the modulating effect of melatonin on MDA and GSH in human erythrocytes during day and night. …”
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Lymphocytes in Placental Tissues: Immune Regulation and Translational Possibilities for Immunotherapy by Tom Erkers, Arwen Stikvoort, Michael Uhlin

“…Immune modulation at the fetomaternal interface is crucial to ensure that the fetal allograft is not rejected. …”
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Large dynamic range microwave photonics mixing system based on parallel DPMZM by Yongsheng GAO, Fangjing SHI, Jiajun TAN, Yangyu FAN

“…To solve the problems of nonlinear distortion and limited dynamic range of microwave photonics mixing system, a large dynamic range microwave photonics mixing system based on parallel dual parallel Mach-Zehnder modulator (DPMZM) was proposed.The parallel modulation of radio frequency and local oscillator signals was realized by using DPMZM.The third-order intermodulation distortion (IMD3) in the output intermediate frequency signal was eliminated by configuring the electro-optic modulation index of the two parallel channels and the working point of the modulators.Finally, the dynamic range of the system was improved.Simulation results show that the proposed scheme can suppress IMD3 by 17.7 dB and increase the SFDR to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML"> <mn>127.8</mn><mtext> dB</mtext><mo>·</mo><msup> <mtext>Hz</mtext> <mrow> <mfrac> <mn>4</mn> <mn>5</mn> </mfrac> </mrow> </msup> </math></inline-formula> .…”
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Application of BO-BiGRU based post equalizer in high-speed underwater visible light communication system by Haoyu ZHANG, Li YAO, Chaoxu CHEN, Jianyang SHI, Chao SHEN, Nan CHI

“…Signals are susceptible to nonlinear effects in the process of underwater visible light communication (UVLC) channel transmission.In order to improve the communication performance of the system, it is very important to recover the received signals.A bidirectional gated recurrent unit model based on Bayesian optimization algorithm (BO-BiGRU) was proposed as post equalizer in UVLC system, which could automatically find the optimal hyperparameters.BO-BiGRU model was applied to the 1.2 m underwater experimental platform.64 quadrature amplitude modulation (QAM)-carrierless amplitude-and-phase modulation (CAPM) was adopted, and 3.10 Gbit/s rate of data transfer was achieved under the condition that the bit error ratio (BER) of the system was less than 3.8×10^-37% forward error correction (FEC), which is 128 Mbit/s higher than the traditional post equalization method.…”
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Bit error rate analysis model of M-APSK based on total probability formula by HUAN Hao, REN Kexue

“…To efficiently evaluate the performance of M-APSK modulation scheme over an additive white Gaussian noise channel, a theoretical bit error rate analysis model was proposed based on total probability formula. …”
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TH-PAM multiple access scheme for 60 GHz pulse wireless communication system by Yongbin ZHANG, Xuehua LI, Boxu YAO

“…In view of the multi-user interference problem in 60 GHz pulse wireless communication system，the performance of the system based on TH-PAM multiple modulation scheme was studied. Under the IEEE 802.15.3.c channel model，relationship analysis model between system BER performance，communication distance and number of user was put forward，multi-user interference characteristics of the system with TH-PAM multiple access modulation was studied. …”
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Error performance of CE-OFDM based AF systems with relay selection by Tao JIANG, Guangqiu LI, Jianhui CAI

“…Constant envelope (CE) orthogonal frequency division multiplexing (OFDM) can develop the advantages of OFDM,and eliminate the shortcomings of high peak-to-average power ratio (PAPR) and sensitivity to non-linear distortion of power amplifiers.The error performance of OFDM based amplify-and-forward (AF) cooperative system with relay selection will be deteriorated due to feedback delay and other factors.Minimum mean square error (MMSE) Wiener channel predictor can alleviate the deterioration of error performance of wireless systems caused by feedback delay.For this reason,the CE-OFDM based AF cooperative system with relay selection and MMSE channel prediction which can overcome the shortcomings of OFDM and the influence of feedback delay was proposed,and its lower bound expressions for the average bit error rate (ABER) of rectangular quadrature amplitude modulation over Rayleigh block fading channels were derived.The numerical calculation and simulation results show that the lower bound expressions for the ABER of the above system has high accuracy when the modulation coefficients are small and can be used to design the AF cooperative system with CE-OFDM,channel prediction,and relay selection.…”
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