Yantao Guo

First Affiliated Hospital of Hunan University of Traditional Chinese Medicine

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Lidong Zhu

University of Electronic Science and Technology of China

Gang Feng

University of Electronic Science and Technology of China

Xiaogang Gou

China Electronics Technology Group Corporation

Xiaoshan Yu

Xidian University

Kun Wang

Peking University

Huaxi Gu

Xidian University

Enxu Liu

Institute of Microelectronics

Xin Zhao

Donghua University

Jiahao Duan

Soochow University

Shuang Qin

University of Electronic Science and Technology of China

Cooperative Institutions

First Affiliated Hospital of Hunan University of Traditional Chinese Medicine

University of Electronic Science and Technology of China

Chinese Academy of Sciences

China Electronics Technology Group Corporation

Hebei Science and Technology Department

Hunan University of Traditional Chinese Medicine

Shanghai Jiao Tong University

Sichuan University

Beijing University of Posts and Telecommunications

National University of Defense Technology

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Burst Packet Assembly Policies for Optical Burst Switching Network

Telecommunication Engineering (2005)

Yantao Guo Zengji Liu

Optical burst switching (OBS) technology integrates the advantages of optical circuit switching and optical packet switching into one which can satisfy the need of switching and transmitting of multimedia information with large volume and high rate, it will be the core technology of next IP backbone network. This paper describes some key technologies of OBS network, namely some assembly policies and realization methods of burst packets at OBS network edge, in conclusion the burst assembly policy with better QoS and easy practicability will be the best one.

Optical burst switching

Packet Switching

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Increasing secret key capacity of OFDM systems: a geometric program approach

Concurrency and Computation Practice and Experience (2016)

Longwang Cheng Wei Li Li Zhou Chunsheng Zhu Jibo Wei

Summary Extracting secret keys from the common randomness of wireless channels has attracted prominent attention recently. Orthogonal frequency‐division multiplexing (OFDM) systems can provide extra randomness in view of the use of multiple subchannels. So far, the secret key capacity of OFDM systems is still an open issue. In this paper, the secret key capacity of OFDM systems based on the subchannel state information is analyzed, and an expression of the secret key capacity is derived under the assumption that the subchannels are independent. To increase the secret key capacity, a power allocation scheme based on geometric program is proposed. Furthermore, an underlying propagation protocol is designed to realize the power allocation scheme. Performance simulations show that the proposed scheme achieves greater secret key capacity in comparison with equal power allocation scheme, especially at low signal‐to‐noise ratio region. Besides, the secret key bits mismatch rate during the secret key generation based on the power allocated subchannels is decreased.

Key generation

10.1002/cpe.3966

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Traditional Chinese medicine therapies for patients with knee osteoarthritis: A protocol for systematic review and network meta-analysis

Boyu Wu Lei Yang Chengwei Fu Yantao Guo

Knee osteoarthritis (KOA) is a common c h r o n i c d e g e n e r a t i v e d i s e a s e characterized by progressive damage of articular cartilage, subchondral bone re m o d e l i n g , a n d s e c o n d a r y s y n o v i a l inflammation.It is one of the leading c a u s e s o f d i s a b i l i t y , s e r i o u s l y affecting patients' quality of life.KOA affects more than 250 million people worldwide , and will increase substantially with aging of the global population and the obesity epidemic.Therefore, KOA has emerged as a main global health problem and resulted in a substantial economic burden on the health care INPLASY 1 International Platform of Registered Systematic Review and Meta-analysis Protocols INPLASY PROTOCOLTraditional Chinese medicine therapies for patients with knee osteoarthritis: A protocol for systematic review and network meta-analysis

10.37766/inplasy2022.3.0008

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An Efficient Approximation Algorithm for Traffic Engineering in Software Defined Networks

Gang Wang Gang Feng Shuang Qin Mu Yan Yantao Guo

In this paper, we focus on the efficient algorithm for solving the multi-commodity flow problems involved in TE and develop an improved approximation algorithm (i-FPTAS) based on the Fully Polynomial Time Approximation Scheme (FPTAS), with aim of greatly improving computational efficiency without compromising traffic load balancing performance.Numerical results shows that i-FPTAS can achieve close-optimal approximation solution which is much better than that of FPATS with the same approximate parameter, and increasing the approximate parameter of i-FPTAS can lower computational complexity with little loss on close-optimality.

10.2991/eeeis-16.2017.85

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A scalable AWG-based data center network for cloud computing

Optical Switching and Networking (2014)

Gang Wu Huaxi Gu Kun Wang Xiaoshan Yu Yantao Guo

Data center

10.1016/j.osn.2014.12.001

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Citations (16)

An Approach to Simulating and Optimizing the Shipbuilding Process Based on HTCP-net

Computer Engineering and Science (2010)

Yantao Guo

In the shipbuilding process,the production capacity of each stage is not only constrained by the internal resources,but also by the shared resources.According to the relevant theory of Hierarchical Timed Colored Petri-net (HTCP-net),Meta language is used to modeling the shipbuilding process,followed by the simulation and analysis with the CPN tools.The results of the simulation predict the production capacity of the S company and indicate the utilization ratio of the main resources.After the bottleneck resources are identified by an analysis of the resource utilization ratio,some methods are proposed to debottleneck,which is eventually proved to be feasible by re-simulation.The methodology in this paper can be a guide for the modeling,simulation and analysis of complicated shipbuilding processes.

Net (polyhedron)

Discrete-Event Simulation

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Simulations of Low-Density Parity-Check Codes under high-order modulation

Xin Zhao Lidong Zhu Yantao Guo Xiaogang Gou

Improving the spectral efficiency as far as possible while guaranteeing communication quality by channel coding becomes the development direction of the communication system. This paper studies the application of Low-Density Parity-Check Codes under high-order modulation, which not only considers improving the reliability of communication through the LDPC channel coding, but also taking the effectiveness of communication by using high-order modulation. A detailed analysis is given for two methods of the calculation of initialization information for the LLR-BP algorithm under high-order modulation: component calculation and Euclidean distance calculation. The first method is deduced in detail by taking 16APSK modulation as an example. Finally, simulations are done to verify the decoding performance of LDPC code under high-order modulation. We do the simulations combining with QPSK, 8PSK, and 16APSK. The simulation results demonstrate the feasibility of the first method. The performance of two methods is similar.

Initialization

Modulation (music)

10.1109/gsmm.2012.6314384

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A Novel Differentiated Service Hybrid Signaling Protocol for Optical Burst Switching Networks

Yantao Guo Aijun Wen Zengji Liu Zhiqing Zhang

A novel differentiated service hybrid (DSH) signaling protocol is proposed for optical burst switching (OBS) networks. In an OBS network, real-time (circuit) traffic and non-real-time (bursty data) traffic are dealt respectively by TAW and JET protocol according to their different QoS requirements. TAW signaling is modified to adapt to the transport of circuit emulation traffic. A call request of circuit traffic may be used to set up a virtual channel from a source to a destination before the traffic arrives, and the virtual channel would be held until the call ends. In this way, smaller end-to-end delay and lower loss probability of data bursts may be achieved for accepted calls. By computer simulations, the performance of DSH protocol is studied; its effects on wavelength utilization and blocking probability of OBS network are investigated.

Optical burst switching

Signaling protocol

10.1109/icis.2007.39

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Low complexity multi-level NB-QC-LDPC coded modulation scheme for optical communication systems

2022 20th International Conference on Optical Communications and Networks (ICOCN) (2019)

Dongdong Wang Chenhua Sun Liqian Wang Xue Chen Yantao Guo

In this paper, we propose a multi-level non-binary quasi-cyclic low density parity check (NB-QC-LDPC) coded modulation (CM) scheme to reduce the decoding complexity while maintaining and/or exceeding the super BER performance of the traditional NB-QC-LDPC CM scheme. Firstly, local optimal searching combined with the classical superposition construction is proposed to construct the required NB-QC-LDPC codes with possibly enlarged girth and less number of the shortest cycles. Secondly, by analyzing the changing trend of the BER performance and decoding complexity of the NB-QC-LDPC code defined over 𝐺𝐹(𝑄) incident to 𝑄. We find that the decoding complexity increases proportionally with the increase of 𝑄, but the best BER performance usually corresponds to a smaller 𝑄. Finally, by replacing the high-order NB-QC-LDPC code based CM scheme to the multi-level low-order NB-QC-LDPC code based CM scheme, the decoding complexity can be effectively reduced. Simulation results show that the designed two-level 𝐺𝐹(4)/𝐺𝐹(8) QC-LDPC code based 16QAM/64QAM CM system can perform almost the same or even better BER performance with/than the corresponding traditional 𝐺𝐹(16) / 𝐺𝐹(64) QC-LDPC code based 16QAM/64QAM CM system.

Modulation (music)

Forward error correction

Code (set theory)

10.1117/12.2522090

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Distribution characteristics and performance simulations of rain attenuation at Ka band for satellite communications

Shuxian Lin Lidong Zhu Yantao Guo Xiaogang Gou

In satellite communication system, rain attenuation is one of the most important reasons for the signal fading transmitted at Ka band (30/20GHz). In this paper, based on the ITU recommendation rainfall attenuation prediction model, we obtain the rainfall attenuation value of one specific area in satellite communication systems at Ka band, in premise of knowing that rain attenuation value of a certain area follows lognormal distribution, then statistical distribution parameters are derived in detail by a method of the least squares curve fitting. After QPSK modulation, signal is polluted by additive noise in AWGN channel. We analyze and simulate the effect of light rain and heavy rain on signal propagation. The simulation results indicate that rain attenuation makes the signal-to-noise ratio and the bit error rate worse.

Ka band

Communications satellite

Satellite broadcasting

Ku band

10.1109/gsmm.2012.6314405

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Citations (8)