A5055700256- Opportunistic and Delay-Tolerant Networks
- Satellite Communication Systems
- Power Line Communications and Noise
- IoT Networks and Protocols
- Advanced MIMO Systems Optimization
- PAPR reduction in OFDM
- Cooperative Communication and Network Coding
- Maritime Navigation and Safety
- Energy Harvesting in Wireless Networks
- Advanced Wireless Communication Technologies
- UAV Applications and Optimization
- Electromagnetic Compatibility and Noise Suppression
- Mobile Ad Hoc Networks
- Advanced Wireless Network Optimization
- Millimeter-Wave Propagation and Modeling
Beihang University
2016-2023
In this paper, we introduce an intelligent reflecting surface (IRS)-assisted wireless powered heterogeneous network (WPHN) consisting of two groups devices. Specifically, one group devices, i.e., energy-harvesting devices (EHDs), are charged by external energy supplies, while the other non-energy-harvesting (NEHDs), internal supplies. An IRS aims to participate in transfer (WET) downlink and information (WIT) uplink. A sum throughput maximization problem is formulated subject constraints...
To tackle the address aggregation problem for low earth orbit (LEO) satellite communication system, a global geographical Internet Protocol subnet division model space–ground integrated network addressing scheme is proposed in this paper. A 2-D spherical coordinate system based on distance applied to describe LEO track and location information of zone. mathematical framework abnormal users constructed under system. The size zone influence expectation user number through ratio logically...
In this paper, a Low Earth Orbit (LEO) satellite network capacity model is proposed to value the influence of topology and routing strategy on throughput capacity. Under balance framework, two strategies algorithms are studied. The analysis solution shows that for LEO constellation, with opposite direction links could increase quantity inter link (ISL), reducing traffic each link. Central algorithm presents superior distribution ability in than distributed strategy. Simulation results prove...
In traditional wired or cellular communication, the communication scenario and channel are fixed. However, with an increasing interest in air-ground integrated network, transition caused by dynamic high-movement nodes happens frequently, resulting deteriorating reliability of communication. this paper, a time-varying model is proposed to describe continuous-time characteristics transferring process. The constructs geometric structure firstly. According structure, characteristic line-of-sight...
Given that L-band digital aeronautical communications system type 1 (LDACS1) may share the same spectrum with legacy Distance Measuring Equipment (DME) system, DME, impulsive interference would be main issue of this system. To improve performance LDACS1, a time-domain Correlative Interference Mitigation (CIM) aiming at DME impulse is proposed in paper. This method could expected to detect and mitigate by utilizing strong auto-correlation signals weak cross-correlation LDACS1 signals. In CIM,...
Due to the global coverage and real-time access advantages of Tracking Data Relay Satellite System (TDRSS), demonstration platform based on TDRSS can satisfy new technology verification needs space information network (evolution from sensorweb). However, comprehensive evaluation research this faces many problems: complicated diverse technical indicators in various areas, coupling redundancy between indicators, difficulty establishing number indicator system layers, errors causing by...
Summary To provide a connection between low earth orbit (LEO) satellite network and terrestrial Internet, geographical addressing strategy for LEO is proposed in this paper. When the IP geo‐subnet divided based on location, users inside routers above each subnet could be allocated maintain addresses under regulation of network. The implemented first hop last packet transmission. This paper proves that application geo‐subnets effectively reduce route table size generation time large‐scale...
While scalable cell-free massive MIMO (CF-mMIMO) shows advantages in static conditions, the impact of its changing serving access point (AP) set a mobile network is not yet addressed. In this paper we first derive CPU cluster and AP handover rates CF-mMIMO as exact numerical results tight closed form approximations. We then use our rate result to analyse mobility-aware throughput. compare spectral efficiency (SE) against distributed with pure network- UE-centric selection, for different...