A5101572524- Advanced MIMO Systems Optimization
- Advanced Wireless Communication Techniques
- Cooperative Communication and Network Coding
- Advanced Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- IoT Networks and Protocols
- Genetic Mapping and Diversity in Plants and Animals
- Wireless Communication Networks Research
- Advanced Wireless Network Optimization
- Power Line Communications and Noise
- PAPR reduction in OFDM
- Millimeter-Wave Propagation and Modeling
- Rice Cultivation and Yield Improvement
- Telecommunications and Broadcasting Technologies
- Antenna Design and Analysis
- Hydrocarbon exploration and reservoir analysis
- Optical Wireless Communication Technologies
- RFID technology advancements
- Bluetooth and Wireless Communication Technologies
- Software-Defined Networks and 5G
- Full-Duplex Wireless Communications
- UAV Applications and Optimization
- Wireless Body Area Networks
- Error Correcting Code Techniques
- Advanced Antenna and Metasurface Technologies
Hebei Normal University
2024
Beijing University of Posts and Telecommunications
2020-2024
Heriot-Watt University
2014-2023
South China Agricultural University
2021-2023
Key Laboratory of Guangdong Province
2022
China Internet Network Information Center
2017-2018
Southwest Jiaotong University
2018
Jilin University
2015-2017
Southwest Minzu University
2012-2015
China University of Petroleum, Beijing
2014
The deployment of 5G wireless communication systems is projected to begin in 2020. With new scenarios, technologies, and network architectures, the traffic management for networks will present significant technical challenges. In recent years, AI especially ML have demonstrated success many application domains, suggesting their potential help solve problem management. this article, we investigate characteristics discuss challenges they Potential solutions research directions traffic,...
In this paper, a new WINNER+-based 3-D non-stationary geometry-based stochastic model (GBSM) for multiple-input multiple-output channels is proposed, as well extended evolving algorithms of time-variant channel parameters. Meanwhile, important statistical properties the model, i.e., autocorrelation function, cross-correlation and Doppler power spectrum density are derived analyzed. Moreover, we propose an efficient hardware implementation method, namely, sum-of-frequency-modulation (SoFM) to...
With the rapid development of information technology, demands sport monitoring research are rapidly increasing. Sport Internet Things (IoTs) based on sensor technique and modern communication technology becoming more important to current training daily activities. Sensor-based approaches lead people take advantage wearable devices monitor their own physiological parameters, in which we will focus blood oxygen saturation pulse measurement. In order measure these two adopt near-infrared...
With a great potential to support multitudinous services and applications, mobile device-to-device (D2D) communications are conceived as candidate paradigm for the future intelligent transportation systems Internet. To optimize performance of underlaying D2D communication with mutual interference caused by resource reuse, we propose two scenario-related power allocation schemes investigate energy efficiency (EE) spectral (SE) trade-off. A 3-D vehicle-to-vehicle channel model is adopted...
Cross-Technology Communication (CTC) is an emerging technique that enables direct interconnection among incompatible wireless technologies. Recent work proposes CTC from IEEE 802.11b to LoRa but has a low efficiency due their extremely asymmetric data rates. In this paper, we propose WiRa emulates waveforms with 802.11ax achieve efficient WiFi LoRa. By taking advantage of the OFDMA in 802.11ax, can use only small Resource Unit (RU) emulate chirps and set other RUs free for high-rate users....
In this paper, a new non-stationary Vehicle-to-Vehicle (V2V) channel model is proposed. It could generate more smooth fading phase between the adjacent states and guarantee accurate Doppler frequency, which great improvement comparing with those of existing geometry-based stochastic models (GBSMs) for V2V channels. Meanwhile, spatial-temporal correlation function (STCF) as well temporal (TCF) spatial (SCF) are derived in details based on power angle spectrums both mobile transmitter (MT)...
Chemical fungicides can effectively prevent and control powdery mildew, but they also leave pesticide residues in the environment on cucumbers. In this study, we added sulfur powder to soil where cucumbers were grown see how it affected occurrence of mildew. The results showed that adding increased absorption by cucumbers, improved plant immunity, reduced incidence Furthermore, soluble protein content cucumber leaves, enhanced photosynthesis, significantly fruit yield. Additionally, addition...
In order to improve the stability and image accuracy of CT scanner frame during high-speed operation, dynamie characteristies rotating systemand unbalanced excitation mechanism are investigatedon basis multi-body dynamics algorithms, a dynamic balance control system including adaptive PID real-time compensation strategies is constructed. The strategy verified by ADAMS-MATLAB joint simulation experimental platform, it analyzedthat method caneffectively inhibit vibrationperturbation caused...
In this paper, the bit error rate (BER) performance of spatial modulation (SM) systems under a novel 3-D vehicle-to-vehicle (V2V) multiple-input multiple-output (MIMO) channel model is investigated both theoretically and by simulations. The impact vehicle traffic density, Doppler effect, 2-D V2V MIMO models on BER are thoroughly investigated. Simulation results show that SM mainly affected correlation underlying model. Compared with other technologies, system can offer better tradeoff...
Accurate prediction of pore pressure can assist engineers to better work out and optimize an oilfield development plan. Because the P-wave velocity only experiences small-scale fluctuations for pore-pressure change in carbonate rocks, existing well-known methods are incapable predicting rocks with field-required accuracy. We evaluated a new method based on decomposition wavelet transformation predict rocks. The was decomposed into contributions from fluid rock framework using Biot’s theory....
The potential of using visible light communication (VLC) technologies for vehicular networks has recently attracted much attention. underlying VLC channels, as a foundation the proper design and optimization systems, have not yet been sufficiently investigated. Vehicular link impairments can significant impact on system performance capacity. Such include optical wireless channel distortion background noise. This paper proposes novel three-dimensional (3D) regular-shaped geometry-based...
LoRa is widely deployed for various applications. Though the knowledge of channel occupancy prerequisite all aspects network management, acquiring challenging due to large number channels be detected. In this paper, we propose LoRadar, a novel acquirer based on cross-channel scanning. Our in-depth study finds that Channel Activity Detection (CAD) in narrow band can indicate activities wide bands because they have same slope time-frequency domain. Based our finding, design scanning mechanism...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> The mitigation of intercarrier interference (ICI) in closed-loop single-input–single-output (SISO) and multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) is considered. authors show that the ICI coefficient matrix approximately unitary exploit this property to design a nonlinear Tomlinson–Harashima precoder for reduction SISO OFDM space-time block-coded...
This paper proposes a novel quadrature space-frequency index modulation (QSF-IM) scheme as promising energy-efficient radio-access technology for the fifth generation (5G) wireless systems. Motivated by potential energy saving of spatial (SM) with part information being carried through antenna indexes, proposed further leverages benefits SM applying idea across and frequency domains. Moreover, deploying dual constellation in-phase quadrature-phase transmission, can enhance data rate at no...
In this paper, the bit error rate (BER) performance of a new multiple-input-multiple-output technique, named spatial modulation (SM), is studied under novel non-stationary wideband high-speed train (HST) channel model in different scenarios. Time-varying parameters obtained from measurement results are used to configure make all more realistic. A statistic property called stationary interval terms space-time correlation function proposed describe model's time-varying behavior. The accurate...
In this paper, the bit error rate (BER) performance of spatial modulation (SM) systems is investigated both theoretically and by simulation in a non-stationary Kronecker-based massive multiple-input-multiple-output (MIMO) channel model multi-user (MU) scenarios. Massive MIMO SM are considered paper using time-division multiple access (TDMA) scheme block diagonalization (BD) based precoding scheme, for different system settings. Their compared with vertical Bell labs layered space-time...
Dynamic regulation of QTLs remains mysterious. Single segment substitution lines (SSSLs) and conditional QTL mapping functional mappings are ideal materials methods to explore dynamics for complex traits. This paper analyzed the on plant height with SSSLs in rice. Five were verified first. All five had significant positive effects at one or more developmental stages except QTL1. They interacted each other, negative before 49 d after transplanting since then. The selectively expressed...
Frequency offset in orthogonal frequency division multiplexing (OFDM) systems leads to loss of orthogonality among subcarriers, so that intercarrier interference (ICI) occurs. A promising ICI self-cancellation scheme based on a data allocation (X/sub k/, X/sub k+1/=X/sub k/) has been proposed deal with this problem. However, degrades the performance peak-to-average power ratio (PAPR). In paper, lessen impairment, simple k/*) is control both and PAPR at same time. As result, an OFDM presented...
Long Range-Frequency Hopping Spread Spectrum (LR-FHSS) is a novel wireless communication technology to improve the coverage of Low-Power Wide-Area Network (LP-WAN). But our measurement finds that given same set sub-channels, different Frequency Sequence (FHS) can result in reliability difference up 52.6 % terms Packet Reception Rate (PRR). The key observation indicates LR-FHSS significantly influenced by FHS besides link quality. Hence, this paper, we propose DFH takes both quality and into...
Frequency offset is an important problem in orthogonal frequency-division multiplexing (OFDM) systems. This leads to a loss the orthogonality between subcarriers and results intercarrier interference (ICI). A simple effective ICI self-cancellation scheme based on signal mapper (a,-a) has been proposed reduce effect of frequency (see Zhao, Y. Haggman, S.-G., IEEE Trans. Commun., vol.49, no.7, p.1185-91, 2001). We generalize (a, /spl mu/ae/sup j/spl theta//), investigate resulting...
Radio frequency identification (RFID) technology has been extensively used in various practical applications, such as inventory management and logistics control, with its outstanding features (e.g. non-line-of-sight reading fast identification). And a large RFID system, unknown tag uses total execution time the performance criterion. However, of existing protocols terms is not ideal. To get better efficiency, novel protocol (NUTIP) proposed. The novelty NUTIP demonstrated mainly two aspects:...
Frequency offsets negatively impact the performance of closed-loop multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. Particularly, when multiple users are active, can be high. Linear precoding and non-linear Tomlinson-Harashima (THP) thus developed for spatially-multiplexed multiuser OFDM space-time block-coded (OSTBC) OFDM. The proposed precoders employ a limited feedback structure, which is implemented with shared codebook matrices, only index...
Spatial modulation (SM) is a relatively new multiple-input multiple-output (MIMO) technology that can provide high data rate with reasonable spectral efficiency. In this paper, the bit error (BER) performance of SM systems under vehicle-to-vehicle (V2V) channel models investigated. The theoretical BER expression given. impact some V2V model parameters on underlying space-time correlation function (STCF) and are also studied. Simulation results indicate schemes, maximum Doppler frequency,...