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Double-Space-Cooperation Method for Increasing Channel Capacity

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China Communications 2015年第12期12卷 76-83页

作者： jiao bingli LI Dou School of Electronics Engineering and Computer Science Peking University

Shannon channel capacity theorem poses highest bit-rate of error free transmission over additive white Gaussian noise *** addition,he proved that there exists channel code that can theoretically achieve the channel *** fortunately,the latter researchers found some practical channel codes approaching the channel capacity with insignificant losses of spectral efficiency under ignorable bit error rate(BER).The authors note,in general,that bits of the channel codes are not independent of each other in code ***,we note that the modulated symbols are not independent among them,as well,in Euclidean *** exploiting a usage of the dependencies jointly to signal design,we can transmit two independent signal streams through an additive white Gaussian channel and separate them in Euclidean space at the *** capacity of this approach is found larger than that of Shannon capacity in the same channel *** numerical results confirm the theoretical procedures.

关键词： Euclidean transmit receiver symbol parity latter separate coded additive losses

Secure Performance Analysis and Optimization for FD-NOMA Vehicular Communications

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China Communications 2020年第11期17卷 29-41页

作者： Lai Wei Yingyang Chen Dongsheng Zheng bingli jiao Modern Communications Research Institute Peking UniversityBeijing 100871China College of Information Science and Technology Jinan UniversityGuangzhou 510632China

Vehicle-to-vehicle(V2V)communication appeals to increasing research interest as a result of its applications to provide safety information as well as infotainment *** increasing demand of transmit rates and various requirements of quality of services(QoS)in vehicular communication scenarios call for the integration of V2V communication systems and potential techniques in the future wireless communications,such as full duplex(FD)and non-orthogonal multiple access(NOMA)which enhance spectral efficiency and provide massive ***,the large amount of data transmission and user connectivity give rise to the concern of security issues and personal *** order to analyze the security performance of V2V communications,we introduce a cooperative NOMA V2V system model with an FD *** paper focuses on the security performance of the FD-NOMA based V2V system on the physical layer *** first derive several analytical results of the ergodic secrecy ***,we propose a secrecy sum rate optimization scheme utilizing the instantaneous channel state information(CSI),which is formulated as a non-convex optimization *** on the differential structure of the non-convex constraints,the original problem is approximated and solved by a series of convex optimization *** results validate the analytical results and the effectiveness of the secrecy sum rate optimization algorithm.

关键词： vehicular communications vehicle-to-vehicle(V2V) physical layer security(PLS) full duplex(FD) non-orthogonal multiple access(NOMA)

A Networking Solution on Uplink Channel of CoFrequency and Co-Time System

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China Communications 2016年第S2期13卷 183-188页

作者： bingli jiao Sanjun Liu Yiming Lei Meng Ma School of Electronics Engineering & Computer Science Peking University

Co-frequency and co-time full duplex(CCFD) is an attractive technology for the future wireless communication because of its high spectral ***,applications of CCFD to mobile network can suffer from strong base station to base station(B2B)*** this paper,the authors proposed a design that uses centralized base station(BS)transmit antenna and distributed BS receive antennas,each of which consists of an antennary to perform beamforming that can nullify the B2 B *** addition,we proposed a combination algorithm that uses the zero forcing method to cascade the recursive least square(RLS) method for reducing the necessary number of the bits taken to the digital *** enables the faster convergence and,thus,allows the transmission of more information bits,compared to the conventional method,for mobile *** simulation results confirm this approach for practical application.

关键词： co-frequency and co-time full duplex cellular networks beamform RLS

A High Spectral Efficiency System Enabled by Free Window with Full Duplex

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China Communications 2015年第9期12卷 93-99页

作者： Feng Cheng Cui Hongyu Ma Meng jiao bingli School of Electronics Engineering and Computer Science Peking University

This paper studies the capacity issues of a wireless communication system that implements single channel full duplex(SCFD) communication at the base station(BS), thereby the mobile stations share the channel via time division duplex(TDD). The system makes use of the same setup as has been used in previous studies of SCFD, but unlike these previous systems, the new system uses water-filling to maximize the spectral efficiency of the uplink channel. The concept of a free window is introduced to the duplex model for measuring, intuitively, the effective bandwidth of the bi-directional communication. The capacity gain is calculated and numerical results show the advantage of the proposed system over that of conventional TDD.

关键词： spectral efficiency free window time division duplex full duplex water-filling

Co-Channel Interference Suppression Techniques for Full Duplex Cellular System

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China Communications 2015年第S1期12卷 18-27页

作者： XIN Yongchao MA Meng ZHAO Zijun jiao bingli School of Electronics Engineering and Computer Science Peking University

Co-frequency and co-time full duplex(CCFD) is a promising technique for improving spectral efficiency in next generation wireless communication systems. However, for the applications of CCFD in a cellular network, severe co-channel interference is an essential problem. Specifically, there are two significant interferences, i.e., inter-terminal interference(ITI) and inter-cell interference(ICI), which lead to an obvious performance degradation. In this paper, two techniques are proposed for suppressing the ITI and ICI in a CCFD cellular system, respectively. The first technique is obtained by modeling the three-node CCFD system as the Z-channel. After deriving the sum-capacity of the Z-channel, a sum-capacity-achieving scheme based on successive interference cancellation(SIC) is proposed. The second technique is designed by combining the fractional frequency reuse scheme with CCFD. The performance gains of the proposed two techniques in terms of signalto-interference plus noise ratio(SINR) and sumcapacity are analyzed. Simulation results show that the proposed scheme can achieve significant interference suppression performance and higher system capacity, especially for cell edge users.

关键词： co-frequency and co-time full duplex(CCFD) fractional frequency reuse(FFR) successive interference cancellation(SIC) Z-channel

An Improved S-Random Interleaver Design for Turbo Code Based on Chaos Model

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Wuhan University Journal of Natural Sciences 2006年第3期11卷 611-616页

作者： XIAO Dongliang SHI Hongling SUN Hong jiao bingli School of Electronic Information Peking UniversityBeijing 100871 China Wuhan Melit Optical Communication Corporation Ltd Wuhan 430079 Hubei China School of Electronic Information Wuhan UniversityWuhan 430072 Hubei China

A new method to design interleaver based on Henon chaos model is presented. The designed interleaver is with rather random behavior. Experimental results show that the proposed S-henon interleaver make a magnitude of im provement in bit error rate （BER） performance by 0.4 dB compared with the S-random interleaver for AWGN channel respectively. The S-henon interleaver may be adapted to 3G mobile communication systems.

关键词： turbo codes chaos interleaver Henon map

Application of the Henon Chaotic Model on to the Design of Low Density Parity Check Codes

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Wuhan University Journal of Natural Sciences 2007年第3期12卷 485-490页

作者： XIAO Dongliang LIN Chunlei SHI Hongling jiao bingli School of Electronic Engineering Tsinghua University Beijing 100084 China School of Information Engineering Peking University Beijing 100871 China Wuhan Melit Optical Communication Corporation Limited Wuhan 430079 Hubei China

A new method to design parity-check matrix based on Henon chaos model is presented. The designed parity-check matrix is with rather random behavior. Simulation results show that the proposed method makes an improvement in bit error rate （BER） performance by 0.4 dB compared with that of Luby for AWGN channel. The proposed method decreases the complexity of decoding significantly, and improves the error correcting performance of LDPC codes. It has been shown that Henon chaotic model is a powerful tool for construction of good LDPC codes, which make it possible to apply the LDPC code in real communication systems.

关键词： LDPC codes chaos parity-check matrix Henon map

The application of NB-Io T technology in Internet of things

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中国新通信 2018年第3期20卷 136-137页

作者： Lin Lifeng jiao bingli R&D Center Hai Hua Electronics Enterprise(China) Co. Ltd. School of Electronics Engineering and Computer Science Peking University

NB-IoT Networking(Narrow Band-Internet of Things), has the characteristics of low power consumption, low cost, wide coverage, positioning in the operator level, based on the spectrum of low rate networking market;have broad application prospects in position tracking, environmental monitoring, intelligent parking, remote meter reading, and agriculture animal husbandry and other fields. In this paper, the current mainstream technology: GPRS, 3G/4G, NB-IoT, LoRa technical analysis and comparison, the final details of the NB-Io T technology in the context of the use of Internet of things and market value.

关键词： NB-IoT low cost Internet of things

一种改进的OFDM自适应比特及功率分配算法

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北京大学学报（自然科学版） 2006年第1期42卷 93-98页

作者：薛金银焦秉立北京大学信息科学技术学院北京100871

自适应正交频分复用(OFDM)技术是根据各子载波在频率选择性衰落信道中不同的瞬时增益,动态地分配数据比特和发射功率,从而达到优化系统性能,提高频谱效率的目的。研究了发射总功率和系统误码率上限不变时传输比特数最大化(RA)的自适应... 详细信息

自适应正交频分复用(OFDM)技术是根据各子载波在频率选择性衰落信道中不同的瞬时增益,动态地分配数据比特和发射功率,从而达到优化系统性能,提高频谱效率的目的。研究了发射总功率和系统误码率上限不变时传输比特数最大化(RA)的自适应算法。提出了一种有记忆迭代方法,能有效克服由于比特数的离散性导致的迭代发散现象,并据此提出两种改进的RA算法。仿真结果表明,和过去的RA算法相比,改进的功率注水RA算法以增加少量的迭代次数为代价,能获得接近于最佳RA算法的传输速率;而改进的等功率RA算法在相同传输速率情况下具有更低的运算复杂度。

关键词：正交频分复用(OFDM) 自适应调制注水原理