Tong Bai

Tong Bai
Queen Mary, University of London | QMUL · School of Electronic Engineering and Computer Science

Doctor of Philosophy

About

26
Publications
7,980
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561
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Introduction

Publications

Publications (26)
Article
Full-text available
Reconfigurable intelligent surfaces (RIS) constitute a revolutionary technique of beneficially reconfiguring the smart radio environment. However, despite the fact that wireless propagation is of time-varying nature, most of the existing RIS contributions focus on time-invariant scenarios for the following reasons. Firstly, it becomes impractical t...
Article
Wireless powered mobile edge computing (WP-MEC) has been recognized as a promising technique to provide both enhanced computational capability and sustainable energy supply to massive low-power wireless devices. However, its energy consumption becomes substantial, when the transmission link used for wireless energy transfer (WET) and for computatio...
Preprint
Full-text available
Along with the proliferation of sensors and of smart devices, an explosive volume of data will be generated. However, restricted by their limited physical sizes and low manufacturing costs, these wireless devices are typically equipped with limited computational capabilities and battery lives and thus incapable of processing data time-efficiently....
Article
Attracted by the advantages of multi-access edge computing (MEC) and non-orthogonal multiple access (NOMA), this paper studies the resource allocation problem of a NOMA-MEC system in an ultra-dense network (UDN), where each user may opt for offloading tasks to the MEC server when it is computationally intensive. Our optimization goal is to minimize...
Article
Full-text available
Building on the ubiquity of electric power infrastructure, power line communications (PLC) has been successfully used in diverse application scenarios, including the smart grid and in-home broadband communications systems as well as industrial and home automation. However, the power line channel exhibits deleterious properties, one of which is its...
Article
Reconfigurable intelligent surface (RIS) has been proposed as a potential solution to improve the coverage and spectrum efficiency for future wireless communication. However, the privacy of users' data is often ignored in previous works, such as the user's location information during channel estimation. In this paper, we propose a privacy-preservin...
Article
In this letter, a learning-aided resource allocation scheme based on the constrained Markov decision process (CMDP) is proposed to improve the average network energy efficiency (EE) with the constrained quality of service (QoS) in the pattern division multiple access (PDMA)-based simultaneous wireless information and power transfer (SWIPT) system....
Article
Full-text available
Queuing delay is of essential importance in the Internet-of-Things scenarios where the buffer sizes of devices are limited. The existing cross-layer research contributions aiming at minimizing the queuing delay usually rely on either transmit power control or dynamic spectrum allocation. Bearing in mind that the transmission throughput is dependent...
Article
Full-text available
Computation off-loading in mobile edge computing (MEC) systems constitutes an efficient paradigm of supporting resource-intensive applications on mobile devices. However, the benefit of MEC cannot be fully exploited, when the communications link used for off-loading computational tasks is hostile. Fortunately, the propagation-induced impairments ma...
Preprint
Full-text available
Wireless powered mobile edge computing (WP-MEC) has been recognized as a promising technique to provide both enhanced computational capability and sustainable energy supply to massive low-power wireless devices. However, its energy consumption becomes substantial, when the transmission link used for wireless energy transfer (WET) and for computatio...
Article
Full-text available
With the escalating demand for high speed, high reliability, low latency, low cost and ubiquitous connectivity, the telecommunications industry is entering a new era where the ultimate optimality of the current wireline-wireless access network has to be achieved. Regarding the current wireline network paradigm, dominated by the copper-based digital...
Preprint
Full-text available
Characterized by its distributive deployment, mobile edge computing (MEC) aims for providing the short-term response to diverse computing tasks. However, the benefit of MEC is not fully exploited, especially when the link used for offloading computational tasks is hampered. Since the recent time, intelligent reflecting surface (IRS) has been propos...
Article
Full-text available
The digital Subscriber Line (DSL) remains an important component of heterogeneous networking, especially in historic city-centers, where using optical fibre is less realistic. Recently, the power consumption has become an important performance metric in telecommunication due to the associated environmental issues. In the recent bonding model, custo...
Article
Full-text available
From the power amplifier's perspective, the Peak-to-Average Power Ratio (PAPR) is of essential importance, especially for both single-RF and reduced-RF Multiple-Input Multiple-Output (MIMO) single-carrier schemes. In this context, many of the diversity-oriented index modulation schemes-including the full-RF Space-Time Shift Keying (STSK) and the si...
Article
Full-text available
Characterized by their ease of deployment and bird’s-eye view, unmanned aerial vehicles (UAVs) may be widely deployed both in surveillance and traffic management. However, the moderate computational capability and the short battery life restrict the local data processing at the UAV side. Fortunately, this impediment may be mitigated by employing th...
Article
Full-text available
Unmanned Aerial Vehicles (UAVs) are envisioned to be an important part of the device-centric Internet-of-Things (IoT). These bespoke Unmanned Aircraft Systems (UASs) that support UAVs significantly differ from traditional terrestrial and aeronautical networks, both of which are evolving towards their next-generation forms. The major challenges of t...
Article
Full-text available
Visible light communications (VLC) constitutes as a promising downlink technique of supporting the ever-increasing tele-traffic. Since the ubiquitous mains power line constitutes a natural backbone feed for VLC, a combined power line and VLC network is conceived, where the source data is fed by power line communications (PLC) into the VLC network....
Article
Digital subscriber lines (DSL) relying on twisted pairs and on home-passed fiber network, are still widely deployed in a large part of the world. However, its performance is severely restricted by the occurrence of impulsive noise. In this article, we present both the state-of-the-art and open research opportunities for impulsive noise mitigation i...
Conference Paper
Full-text available
Unmanned aerial vehicles (UAVs) have been widely used in a range of compelling applications. However, some of them are incompetent in tackling with computation-intensive tasks due to limited processing capability and battery life. In this paper, we combine the mobile edge computing and traditional cloud computing techniques for offloading the tasks...
Article
Full-text available
Impulsive noise (IN) constitutes a limiting factor in power-line communication systems, especially in those relying on orthogonal frequency division multiplexing (OFDM). If a single time-domain (TD) sample is contaminated by an impulse, all subcarriers become contaminated after the spreading of the discrete Fourier transform (DFT)-based demodulatio...
Article
Full-text available
Recently, the world-wide human genome related projects have been vigorously launched and implemented. Genesequencing techniques play a critical role in disease diagnosis, prediction, population stratification relying on efficiently mining genetic features in the gene pool. Exploring the association between the sites of the genetic mutation and the...
Conference Paper
Full-text available
Unmanned aerial vehicles (UAVs) cooperating with satellites and base stations (BSs) constitute a space-air-ground three-tier heterogeneous network, which is beneficial in terms of both providing the seamless coverage as well as of improving the capacity for the users. However, cross-tier interference may be inevitable among these tightly embraced h...
Article
Full-text available
In this treatise, first of all, we conceive a generic Multiple-Symbol Differential Sphere Detection (MSDSD) solution for both single- and multiple-antenna based noncoherent schemes in both uncoded and coded scenarios, where the high-mobility aeronautical Ricean fading features are taken into account. The bespoke design is the first MSDSD solution i...
Article
Full-text available
Impulsive noise is one of the most challenging issues in digital subscriber lines (DSL). In order to mitigate the deleterious effects of impulsive noise, the conventional automatic repeat request (ARQ) invokes cyclic redundancy checking (CRC) in order to estimate the existence of impulsive noise and then triggers retransmission, which degrades the...
Article
Full-text available
As an important solution to ”the last mile” access, Digital Subscriber Loops (DSL) are still maintained in a huge plant to support low-cost but high-quality broadband network access through telephone lines. The Discrete multi-tone (DMT) transmissions constitute a baseband version of the ubiquitous orthogonal frequency division multiplexing (OFDM)....

Projects

Projects (5)
Project
In this project, we aim to design advanced signal processing /machine learning algorithms to address the challenges arising in RIS/IRS-aided wireless communications, including transmission design and channel estimation.