SVD-Aided Beamforming and Power Allocation Algorithm for Multiuser Turbo-BLAST System Uplink with Imperfect CSI by Xiaomin Chen, Xiangbin Yu, Dazhuan Xu

“…At the receiver, a suboptimal decorrelating scheme is first proposed to mitigate the multiuser interference (MUI) and decouple the detection of different users with imperfect CSI, and then the iterative detecting algorithm that takes the channel estimation error into account is designed to cancel the coantenna interference (CAI) and enhance the bit error rate (BER) results further. Simulation results show that the proposed uplink CDMA-based multiuser Turbo-BLAST model is effective, the detection from every user is completely independent to each other after decorrelating, and the system performance can be enhanced by the proposed beamforming and power allocation schemes. …”
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Channel Estimation Optimization Model in Internet of Things Based on MIMO/OFDM with Deep Extended Kalman Filter by Van Tinh Shi, Dong Ren Nhg

“…However, due to high computational complexity as well as inaccurate channel estimation and remaining weaknesses such as latency and other quality of service criteria, especially Bit Error Rate (BER), Signal Noise Ratio (SNR), and Maximum to Average Power Ratio (PAPR), this research improves these two methods based on the Deep Extended Kalman filter.…”
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Assessment for Melting Temperature Measurement of Nucleic Acid by HRM by Jing Wang, Xiaoming Pan, Xingguo Liang

“…Both insufficiency and excessiveness of EvaGreen were found to give rise to a little bit higher Tm, showing that the proportion of dye should be considered for precise Tm measurement of nucleic acids. …”
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Effect of Moisture Content on the Shear Behaviour of a Completely Decomposed Granite: An Experimental Study by Pan Liu, Jinhong Lin, Yang Wang, Xueqiang Yang

“…Due to the disturbance of laboratory sample and size effect, the strength parameters obtained from the in situ test were a little bit higher than those from the laboratory test.…”
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Research on Code-Division Multiple-Access of DS-SS/EBPSK Modulation by Peng Zhang, Lenan Wu

“…Finally, take m sequence for example, the relationship between bit error rate（BER） performance of the expected user and the number of users was simulated, so did the relationship between BER performance of the expected user and the cycle length of m sequence. …”
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ELECTRICITY METER WITH THE FACILITY TO DETERMINE THE QUALITY OF THE ELECTRICITY SUPPLIED by DAN ROTAR, GEORGE CULEA

“…The possibility of using an embedded system equipped with the Microblaze soft microprocessor, the existence of a 12-bit analog-digital converter and the maximum sampling frequency of 1 MSPS and the possibility of assisted design allows to obtain a measurement system with superior characteristics. …”
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Mobile direct-sequence spread-spectrum underwater acoustic communication based on improved differential energy detector by Peng-yu DU, Long-xiang GUO, Jing-wei YIN, Gang QIAO

“…A Doppler estimation method based on the structural features of spread spectrum signal was proposed,which could achieve real-time Doppler estimation for received spread spectrum signals by energy detecting the result of matching correlation calculation of adjacent received spreading symbols.In addition,this method made full use of the spread spectrum processing gain and could do Doppler estimation under low SNR condition.Improved differential energy detector was further proposed,which can effectively deal with the rapid carrier phase fluctuation interference caused by Doppler effect and time-varying multi-path interference by detecting the output energy of two correlators.Simulation verified the robustness of improved differential energy detector algorithm and the Doppler estimation method based on spread spectrum signal.At-sea data shows that improved differential energy detector combined with the proposed Doppler estimation method can achieve low bit error rate communication for direct-sequence spread spectrum underwater acoustic communication with large time-varying Doppler interference when SNR is −10 dB.…”
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Integration of a Quantum Voting Scheme into Grayscale Images Using the Novel Enhanced Quantum Representation and Qiskit Framework by Alexandru-Gabriel Tudorache, Vasile Manta, Simona Caraiman

“…This paper illustrates the way a proposed quantum voting scheme can be designed in combination with a steganography technique called Least Significant Bit (LSB), by modifying a small number of pixels in multiple grayscale images. …”
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A Wide-Band High-Resolution Transmitter for Optical Isolation Amplifier by Chengying Chen, Lixia Bai, Yunrong Zhu, Tiancheng Wu

“…And the output resolution achieves 11 bit.…”
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Recognition algorithm of non punctured polarization codes based on structural characteristics of coding matrix by Yao WANG, Xiang WANG, Guodong YANG, Zhitao HUANG

“…In order to solve the problems of complexity and poor error adaptability in the blind recognition of standard non-punctured polarization codes, the theorems and propositions that could characterize the relationship between the code length and code rate, and distinguish information subchannel and frozen subchannel were proved.Based on the theorem and proposition, an efficient blind recognition algorithm was proposed.The proposed algorithm only needed to set the possible maximum code length, and the corresponding soft decision codewords matrixes and Kronecker matrixes were constructed.Based on the theorem and proposition proved, the check relationship between the two matrices was judged and the code rate and frozen bit position were estimated.The average likelihood difference was introduced as the test quantity, and the decision threshold was determined based on its theoretical probability distribution and minimax criterion.The simulation results show that the deduced theorem and propositions are consistent with the simulation results.Under the signal-to-noise ratio of 6 dB and code length of 1 024, the parameter recognition rate is still close to 100%.The recognition performance and computational complexity are better than the existing soft decision algorithms.…”
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On the Performance of Energy Harvesting Dual-Hop Free-Space Optical Communication Systems with Secrecy Analysis by Abdulgani A. Ibrahim, Serdar Özgür Ata, Lütfiye Durak-Ata

“…In order to evaluate the performance of the proposed communication system, closed-form expressions for outage probability, ergodic capacity, average bit error rate, and throughput are derived. Additionally, to analyze the physical layer security of the proposed system, closed-form expressions for secrecy outage probability and strictly positive secrecy capacity are obtained. …”
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A New Data Coding Algorithm for Secure Communication of Image by Hidayet Oğraş

“…Moreover, according to qualitative results, even a single-bit change in the reference image leads to a complete inability to decode the secret image, highlighting the robustness and security of the algorithm. …”
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Pseudo-random number generation with -encoders by Charlene Kalle, Evgeny Verbitskiy, Benthen Zeegers

“…The [Formula: see text]-encoder is an analog circuit that converts an input signal [Formula: see text] into a finite bit stream [Formula: see text]. The bits [Formula: see text] are correlated and therefore are not immediately suitable for random number generation, but they can be used to generate bits [Formula: see text] that are (nearly) uniformly distributed. …”
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Design of Pulse Waveform for Waveform Division Multiple Access UWB Wireless Communication System by Zhendong Yin, Zhirui Wang, Xiaohui Liu, Zhilu Wu

“…Due to the excellent orthogonality, the bit error rate (BER) of multiuser with combined waveforms is so close to that of single user in a synchronous system. …”
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Sahara en mouvement by Dominique Casajus

“…Indeed the Sahara-inspired dreams of today’s solar engineers are every bit as wild as the utopias of technicians from the colonial era. …”
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Performance analysis of a VLC system with a new light source and joint step-by-step mapping spatial modulation by Jian SONG, Ya-li CAO, Wen-sheng ZHANG, Jian SUN, Cheng-xiang WANG

“…A new type of light source in the visible light communication (VLC) system was adopted to realize the illumination and data transmission functions simultaneously.Also,a joint step-by-step mapping spatial modulation method based on spatial modulation and red,green,and blue (RGB) LED was proposed.The new light source consisted of white LED and one or more sets of RGB LED,where white LED provided only illumination and RGB LED was only used for communications.The color of RGB LED was controlled by power allocation and the color quality of the new light source was evaluated by color rendering index (CRI).Moreover,the bit error rate (BER) performance of the joint step-by-step mapping spatial modulation scheme with direct current optical orthogonal frequency division multiplexing (DCO-OFDM) at the receivers was also analysed.Simulation results show that the power of RGB LED can be adaptively adjusted according to different requirements of communication and illumination to meet the needs of different scenarios.The VLC system can achieve good BER performance with appropriate light group layout and direct current paranoia.…”
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Joint channel and impulsive noise estimation method based on approximate message passing for NOMA systems by LI Youming, MA Chongya, WU Yonghong, GUO Qiang

“…Simulation results show that compared to the SBL method based on EM, the proposed algorithm exhibited a slight degradation in terms of mean square error (MSE) for channel and impulsive noise estimation, bit error rate (BER). However, the complexity of the proposed algorithm was reduced by one order of magnitude.…”
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Manipulation in the world of marketing by Kristina Ljubičić, Tina Vukasović

“…Wherever we turn at every turn, we can see at least one bit of marketing and try to communicate businesses to their products or services through marketing activities. …”
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Prime Field ECDSA Signature Processing for Reconfigurable Embedded Systems by Benjamin Glas, Oliver Sander, Vitali Stuckert, Klaus D. Müller-Glaser, Jürgen Becker

“…This contribution presents a complete ECDSA signature processing system over prime fields for bit lengths of up to 256 on reconfigurable hardware. …”
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Effect of Optical Signal Beam Shift on the Performance of Satellite Chaos Laser Safety Communication System under Space-Integrated-Ground Information Network by Mi LI, Qiang CHEN, Cheng ZENG, Xue WANG, Yisi WANG, Xiangfei CHEN

“…The eff ect of beam center shift on the performance of satellite chaos laser safety communication system in spaceintegrated-ground information network was studied, the bit error rate (BER) formulae with external and internal mismatch caused by beam center shift was conducted.Based on the BER formulae, the eff ect of beam center shift on external and internal mismatch and system performance was analyzed.The results show that beam wander will further increase external and internal mismatch based on pointing error then aff ect system performance.When pointing error is relatively small, optimizing beam wander will improve system performance more, and when pointing error is relatively large, optimizing internal mismatch will improve system performance more.The research results of this paper have important reference signifi cance for the actual engineering design of satellite chaos laser safety communication system, and lay the foundation for the promotion of terrestrial high-speed chaos laser safety technology to the fi eld of space-integrated-ground.…”
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