Search results for: Zesong Fei

Items from 1 to 20 out of 147 results

article

Analysis of irregular repetition spatially-coupled slotted ALOHA

Hanxiao Yu, Zesong Fei, Congzhe Cao, Ming Xiao, more

Science China Information Sciences > 2019 > 62 > 8 > 1-13

Contention-based access is a promising technology for massive and sporadic transmissions. In this paper, we propose a novel contention-based multiple access scheme, named irregular repetition spatially-coupled slotted ALOHA (IRSC-SA), motivated by the spatial coupling and irregular repetition techniques. There are different classes of users and slots in IRSC-SA, which result in unequal protection...

article

Enhanced frameless slotted ALOHA protocol with Markov chains analysis

Dai Jia, Zesong Fei, Ming Xiao, Congzhe Cao, more

Science China Information Sciences > 2018 > 61 > 10 > 1-11

In this paper, we propose a novel approach to enhance the performance of frameless slotted ALOHA (SA) protocol. We employ signature codes to help the receiver identify the packets contained in collisions, and use successive interference cancellation (SIC) for packet recovery. We model the proposed scheme as a two-state Markov model represented by a uni-partite graph. We evaluate the throughput, expected...

article

Precoder design in downlink CoMP-JT MIMO network via WMMSE and asynchronous ADMM

Zhikun Wu, Zesong Fei

Science China Information Sciences > 2018 > 61 > 8 > 1-13

Precoder design of coordinated multi-point joint transmission (CoMP-JT) multiple-input and multiple-output (MIMO) network aimied at throughput maximization is a challenging problem. In this paper, we propose an asynchronous distributed iterative method to solve this problem. We transform the original throughput maximizing problem to the weighted minimum mean square error (WMMSE) problem, then decompose...

article

Optimal Transmit Beamforming for Secure SWIPT in a Two-Tier HetNet

Bin Li, Zesong Fei, Zheng Chu

IEEE Communications Letters > 2017 > 21 > 11 > 2476 - 2479

This letter investigates the artificial noise aided beamforming design for secure simultaneous wireless information and power transfer in a two-tier downlink heterogeneous network (HetNet), where one femtocell underlays one macrocell in co-channel deployment. Each energy receiver in femtocell can be considered as a potential eavesdropper for messages intended for information receiver (IR). Our objective...

chapter

Feedback-aided irregular repetition slotted ALOHA (F-IRSA)

Dai Jia, Hanxiao Yu, Ce Sun, Zesong Fei, more

2017 9th International Conference on Wireless Communications and Signal Processing (WCSP) > 1 - 5

2017 9th International Conference on Wireless Communications and Signal Processing (WCSP)

In this paper, we propose a feedback-aided irregular repetition slotted ALOHA (F-IRSA) protocol which depends on the distance between the received packet and the set of packets already recovered at the receiver. We employ feedback messages to terminate the user retransmission process, and use successive interference cancellation (SIC) for packet recovery. We evaluate the number of transmissions per...

chapter

Group-DCI based scheduling scheme for ultra-reliable and low latency communications

Ting Liu, Man Dai, Zesong Fei, Shuqiang Xia, more

2017 9th International Conference on Wireless Communications and Signal Processing (WCSP) > 1 - 6

2017 9th International Conference on Wireless Communications and Signal Processing (WCSP)

Supporting diverse services under a unified system is a major concern for the realization in the fifth generation (5G) cellular networks. In 5G systems, the massive connection property of massive machine-type communications (mMTC) results in the huge demand of physical downlink control channel (PDCCH) resources. Furthermore, greater overhead of PDCCH is indispensable for ultra-reliable downlink transmission...

article

Secure Communications for Dual-Polarized MIMO Systems

Shiqi Gong, Chengwen Xing, Sheng Chen, Zesong Fei

IEEE Transactions on Signal Processing > 2017 > 65 > 16 > 4177 - 4192

To enhance secure communications, we deploy the dual-polarized antenna arrays at communication nodes of the multi-input multioutput (MIMO) system, where the base station communicates with multiple legitimate users in the presence of an eavesdropper. We also adopt the dual-structured precoding in which a preprocessing matrix based on the polarized array spatial correlation and a linear precoding based...

article

Recent development of error control codes for future communication and storage systems

Zesong Fei, Jinhong Yuan, Ming Xiao, Baoming Bai, more

China Communications > 2017 > 14 > 8 > iii - v

The outstanding performance of error control codes has attracted the interest of the information and communications theory community and industry partners for more than 20 years since Turbo codes were invented. In recent years, there are more and more scenarios in modern communication and digital storage systems, such as wireless communications, optical communications, flash memories, computer hard...

article

Distributed Decoding for Coded Slotted ALOHA

Dai Jia, Zesong Fei, Hai Lin, Jinhong Yuan, more

IEEE Communications Letters > 2017 > 21 > 8 > 1715 - 1718

In this letter, we propose a distributed decoding algorithm for the coded slotted ALOHA multiple access scheme. To recover the transmitted packets, the proposed algorithm applies a swap and a back substitution operation on each received packet. As a result, the hidden information in the collided packets can be drawn out immediately to help the decoding, and a high throughput can be achieved. The decoding...

article

Probabilistic-constrained robust secure transmission for energy harvesting over MISO channels

Bin Li, Zesong Fei

Science China Information Sciences > 2018 > 61 > 2 > 1-12

In this paper, we consider a system supporting simultaneous wireless information and power transfer (SWIPT), where the transmitter delivers private message to a destination receiver (DR) and powers to multiple energy receivers (ERs) with multiple single-antenna external eavesdroppers (Eves). We study secure robust beamformer and power splitting (PS) design under imperfect channel state information...

chapter

Subjective and objective quality assessment of panoramic videos in virtual reality environments

Bo Zhang, Junzhe Zhao, Shu Yang, Yang Zhang, more

2017 IEEE International Conference on Multimedia & Expo Workshops (ICMEW) > 163 - 168

2017 IEEE International Conference on Multimedia & Expo Workshops (ICMEW)

With the maturity of virtual reality (VR) technology, people have been able to acquire virtual reality experience lightly. To discover more appropriate encoder for panoramic video encoding with the aim of ameliorating the quality of virtual reality video experience, this paper conducts the experiments of subjective and objective quality assessment of panoramic videos. First, sixteen standard panoramic...

article

HAS dynamic buffer-driven resource management to enhance QoE in mobile network

Fei Wang, Zesong Fei, Jing Wang

China Communications > 2017 > 14 > 7 > 1 - 14

Hypertext transfer protocol (HTTP) adaptive streaming (HAS) plays a key role in mobile video transmission. Considering the multi-segment and multi-rate features of HAS, this paper proposes a buffer-driven resource management (BDRM) method to enhance HAS quality of experience (QoE) in mobile network. Different from the traditional methods only focusing on base station side without considering the buffer,...

chapter

The ADMM-based beamforming design with per-antenna power constraints

Niwei Wang, Lei Li, Jianqiang Chen, Zesong Fei, more

2016 19th International Symposium on Wireless Personal Multimedia Communications (WPMC) > 492 - 496

2016 19th International Symposium on Wireless Personal Multimedia Communications (WPMC)

In this paper, we consider the uplink transmission of a system with one multi-antenna base station (BS) and multiple single antenna user equipments (UEs), which forms a virtual multiple-input multiple-output (MIMO) system. To investigate the capacity maximization problem under per-antenna power constraints, the alternating direction method of multipliers (ADMM) is exploited to obtain the optimal solution...

chapter

Balancing energy efficiency and user rate fairness in multicell networks

Lei Li, Jianqiang Chen, Chengcai Li, Bin Li, more

2016 19th International Symposium on Wireless Personal Multimedia Communications (WPMC) > 136 - 141

2016 19th International Symposium on Wireless Personal Multimedia Communications (WPMC)

In this paper, we consider the balance between the energy efficiency (EE) and the short-term fairness among individual users in a muiticell MISO downlink. Firstly, the power consumption and sum proportional rate are utilized jointly to construct an objective function. Then a transmit beamformer optimization problem for the objective maximization subject to transmit power constraints is formulated...

article

On-Line Fountain Codes With Unequal Error Protection

Jingxuan Huang, Zesong Fei, Congzhe Cao, Ming Xiao, more

IEEE Communications Letters > 2017 > 21 > 6 > 1225 - 1228

A new encoding scheme for on-line fountain codes is proposed to provide unequal error protection (UEP) for source symbols. Both the weighted-selection strategy and the expanding-window strategy are used to achieve the UEP property. We analyze the bound of overhead to demonstrate the performance. We also make comparisons with on-line fountain codes that provide equal error protection. Simulation results...

article

Adaptive Mode Switching for Cognitive Wireless Powered Communication Systems

Xiang Ji, Jie Xu, Yue Ling Che, Zesong Fei, more

IEEE Wireless Communications Letters > 2017 > 6 > 3 > 386 - 389

This letter investigates a cognitive wireless powered communication (WPC) system coexisting with a primary wireless communication system, in which a cognitive or secondary wireless device (S-WD) uses its harvested energy from a multi-antenna secondary hybrid access point (S-HAP) and the primary transmitter to communicate with the S-HAP. Based on the channel conditions at each fading state, the cognitive...

article

Energy Efficient Transmission in Multi-User MIMO Relay Channels With Perfect and Imperfect Channel State Information

Shiqi Gong, Chengwen Xing, Nan Yang, Yik-Chung Wu, more

IEEE Transactions on Wireless Communications > 2017 > 16 > 6 > 3885 - 3898

We design novel transmission strategies to maximize the energy efficiency (EE) of the uplink multi-user multiple-input and multiple-output relay channel. In this channel,

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multi-antenna users communicate with a multi-antenna base station (BS) through a multi-antenna relay. To achieve the goal of EE maximization, we propose new iterative algorithms to jointly optimize the multi-user precoder and...

article

Millimeter-Wave Secrecy Beamforming Designs for Two-Way Amplify-and-Forward MIMO Relaying Networks

Shiqi Gong, Chengwen Xing, Zesong Fei, Shaodan Ma

IEEE Transactions on Vehicular Technology > 2017 > 66 > 3 > 2059 - 2071

The gigahertz unlicensed bandwidth spectrum endows millimeter-wave (mmWave) communications with the great potential of realizing high data transmission rates. Similar to all wireless transmission technologies, mmWave communications are also susceptible to security threats. This problem becomes more serious for cooperative networks that need more information exchanges. In this paper, we investigate...

article

A Video Quality Assessment Method for VoIP Applications Based on User Experience

Zedong Wang, Jing Wang, Fei Wang, Chengcai Li, more

Sensing and Imaging > 2017 > 18 > 1 > 1-14

An objective video quality assessment method is proposed to evaluate the video quality in voice over internet protocol (VoIP) applications under network distortion. The fluency and the clarity of videos are two main parts of the factors that affect user experience, thus the method evaluates these two parts to assess the distortions of videos in VoIP applications caused by codec and packet loss. The...

article

A Survey of Multi-Objective Optimization in Wireless Sensor Networks: Metrics, Algorithms, and Open Problems

Zesong Fei, Bin Li, Shaoshi Yang, Chengwen Xing, more

IEEE Communications Surveys & Tutorials > 2017 > 19 > 1 > 550 - 586

Wireless sensor networks (WSNs) have attracted substantial research interest, especially in the context of performing monitoring and surveillance tasks. However, it is challenging to strike compelling tradeoffs amongst the various conflicting optimization criteria, such as the network’s energy dissipation, packet-loss rate, coverage, and lifetime. This paper provides a tutorial and survey of recent...

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INFONA - science communication portal

Search results for: Zesong Fei

Analysis of irregular repetition spatially-coupled slotted ALOHA

Enhanced frameless slotted ALOHA protocol with Markov chains analysis

Precoder design in downlink CoMP-JT MIMO network via WMMSE and asynchronous ADMM

Optimal Transmit Beamforming for Secure SWIPT in a Two-Tier HetNet

Feedback-aided irregular repetition slotted ALOHA (F-IRSA)

Group-DCI based scheduling scheme for ultra-reliable and low latency communications

Secure Communications for Dual-Polarized MIMO Systems

Recent development of error control codes for future communication and storage systems

Distributed Decoding for Coded Slotted ALOHA

Probabilistic-constrained robust secure transmission for energy harvesting over MISO channels

Subjective and objective quality assessment of panoramic videos in virtual reality environments

HAS dynamic buffer-driven resource management to enhance QoE in mobile network

The ADMM-based beamforming design with per-antenna power constraints

Balancing energy efficiency and user rate fairness in multicell networks

On-Line Fountain Codes With Unequal Error Protection

Adaptive Mode Switching for Cognitive Wireless Powered Communication Systems

Energy Efficient Transmission in Multi-User MIMO Relay Channels With Perfect and Imperfect Channel State Information

Millimeter-Wave Secrecy Beamforming Designs for Two-Way Amplify-and-Forward MIMO Relaying Networks

A Video Quality Assessment Method for VoIP Applications Based on User Experience

A Survey of Multi-Objective Optimization in Wireless Sensor Networks: Metrics, Algorithms, and Open Problems

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