Tian Li

China Electronics Technology Group Corporation

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Xinwei Yue

Beijing Information Science & Technology University

Rongke Liu

Beihang University

Fugen Zhou

Beihang University

José Rodríguez-Piñeiro

Tongji University

Xuefeng Yin

Tongji University

Yuanwei Liu

Queen Mary University of London

Guoyan Li

China Electronics Technology Group Corporation

Yafei Wang

Beijing Information Science & Technology University

Zhihao Han

Beihang University

Xuyang Zhang

Ministry of Industry and Information Technology

Cooperative Institutions

Beihang University

Southwest Jiaotong University

Peking University

Chinese Academy of Sciences

Zhejiang University

Ministry of Industry and Information Technology

Beijing Jiaotong University

Beijing Information Science & Technology University

Beijing University of Posts and Telecommunications

Xi'an Jiaotong University

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Relay Satellite Assisted LEO Constellation NOMA Communication System

IEEE Transactions on Aerospace and Electronic Systems (2024)

Xuyang Zhang Xinwei Yue Zhihao Han Tian Li Xia Shen

noma

Communications satellite

Satellite constellation

Satellite broadcasting

10.1109/taes.2024.3454031

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Citations (0)

The discussion of cross-platform mobile application based on Phonegap

Tian Li Huaichang Du Long Tang Ye Xu

As incompatibilities of mobile phone platforms, it is hard to develop mobile application for developers on various platforms. Now, there are many cross-platform frames in the market, Phonegap is considered the best one. This particle describes the concept of Phonegap and its included API components, and builds Android application based on Phonegap, which better explains that Phonegap can achieve cross-platform application using web technology.

Cross-platform

Mobile phone

10.1109/icsess.2013.6615391

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Citations (11)

Empirical analysis on port state control inspection for foreign-registered ships in Malaysian ports

The Asian Journal of Shipping and Logistics (2021)

Mohd Tarmizi Osman Tian Li Yuli Chen Noorul Shaiful Fitri Abdul Rahman

The selection of foreign-registered ships upon entering ports poses challenges to maritime authorities in ensuring the effectiveness of the port state control (PSC) inspection. The derived data from the ships' arrival notification system has been utilised in this study to identify the preferred vessel type for inspection. A combination of the Grey Relational Analysis (GRA) model and Entropy Weight Method (EWM) has been applied to discern the various types of ships that entered five selected ports in Malaysia and disclose the propensity of each vessel type. Based on 100,623 ship arrival records obtained for a period of five years (2015–2019), the types of ships were identified, analysed, scored, and graded. The result shows that the oil tanker has the highest value of grey relational grade for Bintulu port while the passenger ship is in the pole position for Penang port. Kuching port and Port Kelang share the container type as the first in the ranking, whereas Lahad Datu posted the oil tanker. Other results include the sequence of types at individual ports for providing useful information to help policymakers in establishing an effective inspection design. A similar approach is applicable in PSC inspection records for further analysis.

Port (circuit theory)

Grey relational analysis

10.1016/j.ajsl.2020.10.004

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Citations (11)

Exploiting Active RIS in NOMA Networks with Hardware Impairments

IEEE Transactions on Vehicular Technology (2024)

Xinwei Yue Meiqi Song Chongjun Ouyang Yuanwei Liu Tian Li

Active reconfigurable intelligent surface (ARIS) is a promising way to compensate for multiplicative fading attenuation by amplifying and reflecting event signals to selected users. This paper investigates the performance of ARIS assisted non-orthogonal multiple access (NOMA) networks over cascaded Nakagami-

$m$

fading channels. The effects of hardware impairments (HIS) and reflection coefficients on ARIS-NOMA networks with imperfect successive interference cancellation (ipSIC) and perfect successive interference cancellation (pSIC) are considered. More specifically, we develop new precise and asymptotic expressions of outage probability and ergodic data rate with ipSIC/pSIC for ARIS-NOMA-HIS networks. According to the approximated analyses, the diversity orders and multiplexing gains for couple of non-orthogonal users are attained in detail. Additionally, the energy efficiency of ARIS-NOMA-HIS networks is surveyed in delay-limited and delay-tolerant transmission schemes. The simulation findings are presented to demonstrate that: i) The outage behaviors and ergodic data rates of ARIS-NOMA-HIS networks precede that of ARIS aided orthogonal multiple access (OMA) and passive reconfigurable intelligent surface (PRIS) aided OMA; ii) As the reflection coefficient of ARIS increases, ARIS-NOMA-HIS networks have the ability to provide the strengthened outage performance; and iii) ARIS-NOMA-HIS networks are more energy efficient than ARIS/PRIS-OMA networks and conventional cooperative schemes.

noma

10.1109/tvt.2024.3352813

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Citations (13)

A Power Domain Multiplexing Based Co-Carrier Transmission Method in Hybrid Satellite Communication Networks

IEEE Access (2020)

Tian Li Xuekun Hao Xinwei Yue

Power domain non-orthogonal multiple access (PD-NOMA) has been widely recognized a spectrum-efficient multi-user transmission method when the channel gains across different users vary obviously. Due to the long travel distance between the space and the Earth in satellite communication scenarios, the advantages from PD-NOMA will disappear since the signals experience almost the same path loss. However, in hybrid satellite networks, terrestrial users equipped with different size antennas may lead to various receiving gains, which are equivalent to diverse channel gains. In this paper, by deeply exploiting such a characteristic, we propose a power domain multiplexing based co-carrier transmission method in a hybrid satellite network. Superposing a weak signal on a strong one, two signals are enabled to be transmitted on the same carrier with the bandwidth of the strong signal. To guarantee the signals are decodable at both sides, a user pairing strategy is investigated in detail, and the performance gain of the new method is further analyzed. Simulation results show that a carrier resource can be saved in the proposed method with the sacrifice of a marginal bit-error-rate performance.

Power domains

Communications satellite

Spectral Efficiency

10.1109/access.2020.3005860

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Citations (7)

Relay Satellite Assisted LEO Constellation NOMA Communication System

arXiv (Cornell University) (2024)

Xuyang Zhang Xinwei Yue Zhihao Han Tian Li Xia Shen

This paper proposes a relay satellite assisted low earth orbit (LEO) constellation non-orthogonal multiple access combined beamforming (R-NOMA-BF) communication system, where multiple antenna LEO satellites deliver information to ground non-orthogonal users. To measure the service quality, we formulate a resource allocation problem to minimize the second-order difference between the achievable capacity and user request traffic. Based on the above problem, joint optimization for LEO satellite-cell assignment factor, NOMA power and BF vector is taken into account. The optimization variables are analyzed with respect to feasibility and non-convexity. Additionally, we provide a pair of effective algorithms, i.e., doppler shift LEO satellite-cell assisted monotonic programming of NOMA with BF vector (D-mNOMA-BF) and ant colony pathfinding based NOMA exponential cone programming with BF vector (A-eNOMA-BF). Two compromise algorithms regarding the above are also presented. Numerical results show that: 1) D-mNOMA-BF and A-eNOMA-BF algorithms are superior to that of orthogonal multiple access based BF (OMA-BF) and polarization multiplexing schemes; 2) With the increasing number of antennas and single satellite power, R-NOMA-BF system is able to expand users satisfaction; and 3) By comparing various imperfect successive interference cancellation, the performance of A-mNOMA-BF algorithm exceeds D-mNOMA-BF.

noma

Communications satellite

Satellite constellation

10.48550/arxiv.2411.01194

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Demo

Dawei Li Mooi-Choo Chuah Tian Li

Augmented reality technologies allow 3D rendering of media-rich contents which can further be embedded within users' view of the world around them. In this demo, we present our Lehigh Explorer Augmented Campus Tour application which uses new content centric network features we designed. Users submit keyword-based queries to retrieve relevant multimedia contents of campus buildings they are interested in exploring remotely or while visiting the campus in person. Our demo will be presented using Android devices supporting Android version 4.2 and above.

10.1145/2609829.2609831

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Citations (2)

Performance Analysis of HARQ-Enabled IRS-NOMA Downlink Systems

IEEE Internet of Things Journal (2024)

Bin Dai Xinwei Yue Zhen Mei Francis C. M. Lau Yulong Zou

noma

10.1109/jiot.2024.3419922

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SC-Aided Spectrum Sharing Transmission in LEO Constellation Communication Systems

2022 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC) (2023)

Tian Li Guoyan Li Jincan Liu Yinghui Cheng Xinwei Yue

Low Earth orbit (LEO) satellite communication (SATCOM) systems have advantages of low transmission delay and insignificant signal pathloss, which make it as an ideal solution for the long distance non-line of sight communication. As another character of the LEO SATCOM, ground users could be covered by multiple satellite nodes. In this paper, we study multiple nodes multiple users downlink transmission methods for the LEO overlapping area. Recognizing there exists a satellite beam gain difference for beam-center and beam-edge users, a spectrum sharing based transmission method with selection combining strategy is proposed. Thanks to the feature of multiple coverage, beam-edge users are able to choose the strongest satellite node. To give insights of the method, the expression of outage probability is further derived. Simulation results show that the outage probability performance can be improved by using the new method.

10.1109/icspcc59353.2023.10400334

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Non-orthogonal Multiple Access in Coordinated LEO Satellite Networks

Communications in computer and information science (2019)

Tian Li Xuekun Hao Guoyan Li Hui Li Xinwei Yue

noma

Spectral Efficiency

10.1007/978-981-15-1925-3_5

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Citations (4)