A5100308034- Full-Duplex Wireless Communications
- Advanced MIMO Systems Optimization
- Advanced Power Amplifier Design
- Energy Harvesting in Wireless Networks
- PAPR reduction in OFDM
- Radio Frequency Integrated Circuit Design
- Cooperative Communication and Network Coding
- Advanced Wireless Communication Techniques
- Wireless Communication Networks Research
- Antenna Design and Analysis
- Electromagnetic Compatibility and Measurements
- Advanced Photonic Communication Systems
- Power Line Communications and Noise
- Analog and Mixed-Signal Circuit Design
- Educational Reforms and Innovations
- Chaos-based Image/Signal Encryption
- Information and Cyber Security
- Technology-Enhanced Education Studies
- DNA and Nucleic Acid Chemistry
- Electromagnetic Compatibility and Noise Suppression
- Advanced biosensing and bioanalysis techniques
- E-Learning and Knowledge Management
- Radar Systems and Signal Processing
- Electrostatic Discharge in Electronics
- Antenna Design and Optimization
University of Electronic Science and Technology of China
2010-2024
Woosuk University
2021
Ocean University of China
2021
This study analyzes a two-way signaling method for time division duplex reciprocity calibration (RC) in multiuser beamforming systems. The system model of RC is established, and the estimation error coefficient derived. effect this examined terms user signal-to-interference-plus-noise ratio (SINR) capacity. Results reveal relationship between SINR errors as well number antennas users. Moreover, findings show that colocated antenna array less sensitive to than case distributed even if...
In this letter, ridge regression, which is a regularization method, explored for relaxing the requirements on number and maximum amplitude of training samples in digital predistortion. An effective method proposed to determine parameter, essential regression used regularize predistorter identification. Experiments demonstrate that required can be relaxed by 95% 30%, respectively, with tolerable linearization performance loss.
In the presence of some eavesdroppers, cooperative jamming cancellation (CJC) plays a significant role in physical layer security for wireless communications. The assumption that is cancelled ideally with perfect frequency and timing synchronization commonly used past literatures. Due to instability crystal oscillators relative motion between node receiving node, residual offset always exists these two nodes, resulting performance degradation during CJC. this paper, scenario which all nodes...
Abstract In vivo, left-handed DNA duplex (usually refers to Z-DNA) is mainly formed in the region of with alternating purine pyrimidine (APP) sequence and plays significant biological roles. It well known that d(CG)n can form Z-DNA most easily under negative supercoil conditions, but its essence has not been clarified. The study on dependence stability very difficult without modification or inducers. Here, by strong topological constraint caused hybridization two complementary short circular...
Analog self-interference (SI) cancellation is a key process to enable full-duplex wireless communications, which generates cancelling signal (a copy of the SI) at local receiver and subtracts from received cancel SI imposed by transmitter. However, due inherent nonlinearities analog canceller (AC), performance often restricted introducing extra nonlinear distortion receiver. In this letter, an observation architecture proposed capture AC deploying auxiliary chain identical linear approach....
Ultra dense heterogeneous networks (UDHN) is one of the leading ideas in fifth generation (5G) mobile communication systems to improve spectrum efficiency and energy efficiency. In future 5G systems, users will be able use diverse radio access technologies (RATs) simultaneously. However, crucial issues spectral sharing UDHN co-channel interference among small cell base stations (SCBSs) different networks, such as cellular WiFi networks. order mitigate receiver, a suppression method proposed...
Massive multiple-input multiple-output (MIMO) plays a key role in the next generation communication systems. For time-division-duplex (TDD) massive MIMO systems, channel reciprocity calibration (RC) is generally needed to cope with mismatch between uplink and downlink state information. Currently, evaluating capacity of TDD systems imperfect RC mainly relies on exhausting Monte Carlo simulation very few works can be found concisely characterize achievable RC. In this study, by adopting SVD...
A novel digital predistortion (DPD) architecture is proposed to linearize power amplifiers (PAs) in a phased array applicable the wireless communication systems. First, composite signal of outputs over air captured by an extra observation chain deployed this architecture. Although observed may differ from pointing arbitrary target, it contains all nonlinearities PAs inside array. Thus, can be simply characterized using single nonlinear model. Based on model, indirect learning method then...
Abstract Considering that a full‐duplex network is composed of base station (BS) and 2 half‐duplex users, one user transmits on the uplink channel other receives through downlink same frequency. The will generate interuser interference (IUI) channel. In this paper, we propose novel IUI suppression scheme when BS knows full state information. main idea to retransmit weighted signal as soon it has been received by BS. For narrowband case, first assess performance proposed simulation with...