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The Extended Hybrid Carrier-Based Multiple Access Technology for High Mobility Scenarios 被引量:1
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作者 Ge Song Xiaojie Fang Xuejun Sha 《China Communications》 SCIE CSCD 2024年第1期53-68,共16页
The hybrid carrier(HC)system rooted in the carrier fusion concept is gradually garnering attention.In this paper,we study the extended hybrid carrier(EHC)multiple access scheme to ensure reliable wireless communicatio... The hybrid carrier(HC)system rooted in the carrier fusion concept is gradually garnering attention.In this paper,we study the extended hybrid carrier(EHC)multiple access scheme to ensure reliable wireless communication.By employing the EHC modulation,a power layered multiplexing framework is realized,which exhibits enhanced interference suppression capability owing to the more uniform energy distribution design.The implementation method and advantage mechanism are explicated respectively for the uplink and downlink,and the performance analysis under varying channel conditions is provided.In addition,considering the connectivity demand,we explore the non-orthogonal multiple access(NOMA)method of the EHC system and develop the EHC sparse code multiple access scheme.The proposed scheme melds the energy spread superiority of EHC with the access capacity of NOMA,facilitating superior support for massive connectivity in high mobility environments.Simulation results have verified the feasibility and advantages of the proposed scheme.Compared with existing HC multiple access schemes,the proposed scheme exhibits robust bit error rate performance and can better guarantee multiple access performance in complex scenarios of nextgeneration communications. 展开更多
关键词 extended hybrid carrier system high mo-Received:Jun.09 2023 Revised:Nov.20 2023 Editor:Yuanwei Liu bility communications multiple access
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A NEW ALGORITHM FOR MAIN CARRIER ACQUISITION IN DEEP SPACE COMMUNICATIONS 被引量:2
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作者 Zhang Ruyuan Zhan Yafeng Lu Jianhua 《Journal of Electronics(China)》 2011年第2期169-173,共5页
Compared with common near space satellite Telemetry,Telecommand,and Communication(TT&C),deep space TT&C presents a more challenging environment such as long distance,very low Signal to Noise Ratio(SNR).How to ... Compared with common near space satellite Telemetry,Telecommand,and Communication(TT&C),deep space TT&C presents a more challenging environment such as long distance,very low Signal to Noise Ratio(SNR).How to acquire main carrier exactly becomes a hot focus for deep space communications.Already there emerged some main carrier acquisition algorithms,but they all require high SNR and small modulation index.In this paper,we develop a new acquire algorithm.First we use the spectral energy center algorithm to shorten the original sequence,filter out some noise and make the spectral more symmetric.Then we adopt the spectral symmetry algorithm to make full use of the whole spectrum information,and utilize FFT to reduce computation complexity.Simulation results show that our algorithm can acquire main carrier successfully under large modulation index and get good performance with low Carrier to Noise Ratio(CNR). 展开更多
关键词 Deep space Telemetry Telecommand and communication(TT&C) Main carrier acqui-sition Low carrier to Noise Ratio(CNR) Modulation index
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Multi-Channel Iterative FDE for Single Carrier Block Transmission over Underwater Acoustic Channels 被引量:3
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作者 HE Chengbing HUO Siyu +2 位作者 ZHANG Qunfei WANG Han HUANG Jianguo 《China Communications》 SCIE CSCD 2015年第8期55-61,共7页
Recently, single carrier block transmission(SCBT) has received much attention in high-rate phase-coherent underwater acoustic communication.However,minimum-mean-square-error(MMSE) linear FDE may suffer performance los... Recently, single carrier block transmission(SCBT) has received much attention in high-rate phase-coherent underwater acoustic communication.However,minimum-mean-square-error(MMSE) linear FDE may suffer performance loss in the severely time dispersive underwater acoustic channel. To combat the channel distortion, a novel multi-channel receiver with maximum ratio combining and a low complex T/4 fractional iterative frequency domain equalization(FDE) is investigated to improve diversity gain and the bit error rate(BER) performance. The proposed method has been verified by the real data from a lake underwater acoustic communication test in November 2011. At 1.8 km, the useful data rates are around 1500 and 3000 bits/s for BPSK and QPSK respectively. The results show the improvements of system performance. Compared with MMSE FDE system, the output SNR improvement is 6.9 d B, and the BER is from 10-3 to no error bits for BPSK. The output SNR improvement is 5.3 d B, and the BER is from 1.91×10-2 to 2.2×10-4for QPSK. 展开更多
关键词 underwater acoustic communi-cation single carrier multi-channel frequency domain equalization iterative processing
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Immune particle swarm optimization of linear frequency modulation in acoustic communication 被引量:4
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作者 Haipeng Ren Yang Zhao 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2015年第3期450-456,共7页
With the exploration of the ocean, underwater acoustic communication has attracted more and more attention in recent years. The underwater acoustic channel is considered to be one of the most complicated channels beca... With the exploration of the ocean, underwater acoustic communication has attracted more and more attention in recent years. The underwater acoustic channel is considered to be one of the most complicated channels because it suffers from more serious multipath effect, fewer available bandwidths and quite complex noise. Since the signals experience a serious distortion after being transmitted through the underwater acoustic channel, the underwater acoustic communication experiences a high bit error rate (BER). To solve this problem, carrier waveform inter- displacement (CWlD) modulation is proposed. It has been proved that CWlD modulation is an effective method to decrease BER. The linear frequency modulation (LFM) carrier-waves are used in CWlD modulation. The performance of the communication using CWID modulation is sensitive to the change of the frequency band of LFM carrier-waves. The immune particle swarm optimization (IPSO) is introduced to search for the optimal frequency band of the LFM carrier-waves, due to its excellent performance in solving complicated optimization problems. The multi-objective and multi- peak optimization nature of the IPSO gives a suitable description of the relationship between the upper band and the lower band of the LFM carrier-waves. Simulations verify the improved perfor- mance and effectiveness of the optimization method. 展开更多
关键词 underwater acoustic communication carrier waveform inter-displacement (CWlD) multi-objective optimization immune particle swarm optimization (IPSO).
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Frequency Offset Compensation for Satellite Communication System with CE-OFDM 被引量:3
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作者 Gaofeng Cui Cheng Wang +1 位作者 Weidong Wang Yinghai Zhang 《China Communications》 SCIE CSCD 2017年第8期93-104,共12页
Constant envelope orthogonal frequency division multiplexing(CE-OFDM) is a waveform that can achieve 0d B peak-to-average power ratio and avoid the signal distortion caused by the nonlinear power amplifi er. However, ... Constant envelope orthogonal frequency division multiplexing(CE-OFDM) is a waveform that can achieve 0d B peak-to-average power ratio and avoid the signal distortion caused by the nonlinear power amplifi er. However, the carrier frequency offset(CFO) in CE-OFDM systems can cause errors at phase unwrapper module. In this paper, a CFO estimation scheme is proposed for CEOFDM in satellite communication system. As the null subcarrier is inherent in the conjugate symmetric symbol structure at the transmitter, the proposed scheme uses the null subcarrier as prior information to estimate the CFO at the receiver. The ideal estimation range of normalized CFO is obtained by mathematical analysis. Simulation results show that the proposed scheme can estimate the CFO accurately under additive white Gaussian noise(AWGN) channel and multipath fading channel, especially for moderate and high signal-to-noise ratio(SNR). 展开更多
关键词 CE-OFDM carrier frequency offset null subcarrier satellite communication
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Acoustic MIMO Communications in a Very Shallow Water Channel 被引量:1
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作者 Yuehai Zhou Xiuling Cao Feng Tong 《Journal of Marine Science and Application》 CSCD 2015年第4期434-439,共6页
Underwater acoustic channels pose a great difficulty for the development of high speed communication due to highly limited band-width as well as hostile multipath interference. Enlightened by rapid progress of multipl... Underwater acoustic channels pose a great difficulty for the development of high speed communication due to highly limited band-width as well as hostile multipath interference. Enlightened by rapid progress of multiple-input multiple-output (MIMO) technologies in wireless communication scenarios, MIMO systems offer a potential solution by enabling multiple spatially parallel communication channels to improve communication performance as well as capacity. For MIMO acoustic communications, deep sea channels offer substantial spatial diversity among multiple channels that can be exploited to address simultaneous multipath and co-channel interference. At the same time, there are increasing requirements for high speed underwater communication in very shallow water area (for example, a depth less than 10 m). In this paper, a space-time multichannel adaptive receiver consisting of multiple decision feedback equalizers (DFE) is adopted as the receiver for a very shallow water MIMO acoustic communication system. The performance of multichannel DFE receivers with relatively small number of receiving elements are analyzed and compared with that of the multichannel time reversal receiver to evaluate the impact of limited spatial diversity on multi-channel equalization and time reversal processing. The results of sea trials in a very shallow water channel are presented to demonstrate the feasibility of very shallow water MIMO acoustic communication. 展开更多
关键词 underwater acoustic underwater acoustic communication multiple-input multiple-output (MIMO) decision feedback equalizer (DFE) very shallow water multi-channel time reversal
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Analysis of OFDM Applied to Powerline High Speed Digital Communication 被引量:1
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作者 庄建 杨公训 《Journal of China University of Mining and Technology》 2003年第2期174-178,共5页
The low voltage powerline is becoming a powerful solution to home network, building automation, and internet access as a result of its wide distribution, easy access and little maintenance. The character of powerline ... The low voltage powerline is becoming a powerful solution to home network, building automation, and internet access as a result of its wide distribution, easy access and little maintenance. The character of powerline channel is very complicated because it is an open net. This article analysed the character of the powerline channel,introduced the basics of OFDM(Orthogonal Frequency Division Multiplexing), and studied the OFDM applied into powerline high speed digital communication. 展开更多
关键词 powerline carrier communication OFDM high speed digital communication
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Complexity Effective Frequency and Sidelink Synchronization Algorithm for LTE Device-to-Device Communication Systems
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作者 Yong-An Jung Min-Goo Kang Young-Hwan You 《Computers, Materials & Continua》 SCIE EI 2020年第1期443-458,共16页
Device-to-device(D2D)communication is considered as a major challenge in the long term evolution(LTE)network wherein devices directly communicate with each other.One of the key challenges in D2D sidelink is reliable a... Device-to-device(D2D)communication is considered as a major challenge in the long term evolution(LTE)network wherein devices directly communicate with each other.One of the key challenges in D2D sidelink is reliable and reduced-complexity synchronization.To address this issue,a computationally efficient sequential detection scheme for integer carrier frequency offset and sidelink identity is proposed in the LTE-D2D system.To perform the frequency offset detection without retrieving the sidelink identity,the conjugate relation between two primary sidelink synchronization sequences is exploited,which facilitates the detection tasks of frequency offset and sidelink identity to be decoupled.It is demonstrated from simulation results that the inherent property of the sidelink synchronization sequences is effectively used for joint detection of frequency offset and sidelink identity with significantly reduced complexity,compared to existing estimation schemes. 展开更多
关键词 Long term evolution device-to-device communication carrier frequency offset sidelink identity sidelink synchronization
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Power Line Communications Networking Method Based on Hybrid Ant Colony and Genetic Algorithm
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作者 Qianghui Xiao Huan Jin Xueyi Zhang 《Engineering(科研)》 2020年第8期581-590,共10页
When solving the routing problem with traditional ant colony algorithm, there is scarce in initialize pheromone and a slow convergence and stagnation for the complex network topology and the time-varying characteristi... When solving the routing problem with traditional ant colony algorithm, there is scarce in initialize pheromone and a slow convergence and stagnation for the complex network topology and the time-varying characteristics of channel in power line carrier communication of low voltage distribution grid. The algorithm is easy to fall into premature and local optimization. Proposed an automatic network algorithm based on improved transmission delay and the load factor as the evaluation factors. With the requirements of QoS, a logical topology of power line communication network is established. By the experiment of MATLAB simulation, verify that the improved Dynamic hybrid ant colony genetic algorithm (DH_ACGA) algorithm has improved the communication performance, which solved the QoS routing problems of power communication to some extent. 展开更多
关键词 Power Line carrier communication Network Quality of Service Hybrid Ant Colony and Genetic Algorithm
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Jamming Assisted Covert Wireless Communication in Multi-Channel Systems
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作者 Che Bohan Sha Nan +2 位作者 Yang Weiwei Lu Xingbo Gao Chang 《China Communications》 SCIE 2024年第9期211-224,共14页
This paper investigates the jammerassisted multi-channel covert wireless communication(CWC)by exploiting the randomness of sub-channel selection to confuse the warden.In particular,we propose two sub-channel selection... This paper investigates the jammerassisted multi-channel covert wireless communication(CWC)by exploiting the randomness of sub-channel selection to confuse the warden.In particular,we propose two sub-channel selection transmission schemes,named random sub-channel selection(RSS)scheme and maximum sub-channel selection(MSS)scheme,to enhance communication covertness.For each proposed scheme,we first derive closed-form expressions of the transmission outage probability(TOP),the average effective rate,and the minimum average detection error probability(DEP).Then,the average effective covert rate(ECR)is maximized by jointly optimizing the transmit power at the transmitter and the number of sub-channels.Numerical results show that there is an optimal value of the number of sub-channels that maximizes the average ECR.We also find that to achieve the maximum average ECR,a larger number of subchannels are needed facing a stricter covertness constraint. 展开更多
关键词 covert wireless communication jamming multi-channel system
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A Novel Design of Efficient Multi-channel UART Controller Based on FPGA 被引量:9
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作者 HU Zhe ZHANG Jun LUO Xi-ling 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2007年第1期66-74,共9页
In traditional universal asynchronous receiver transmitter (UART) controller, the data transmission is inefficient and the data bus utilization ratio is low. A novel design is provided to solve these problems. The a... In traditional universal asynchronous receiver transmitter (UART) controller, the data transmission is inefficient and the data bus utilization ratio is low. A novel design is provided to solve these problems. The architecture of the system is introduced, the flow charts of data processing as well as the implementation state machine are also presented in detail. This paper is concluded by comparing the performance of this design, which is realized on field programmable gate army (FPGA) using Verilog hardware description language (HDL), with other traditional UART controllers. 展开更多
关键词 serial communication UART multi-channel FPGA
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Research on Carrier Synchronization of QPSK Based on Simulink 被引量:1
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作者 Zhaoxu Zhang Zhigang Li Zheng Dou 《International Journal of Communications, Network and System Sciences》 2017年第8期227-235,共9页
As an important part of the communication system, synchronization technology is a communication system to run the correct protection, has been a hot topic in communication systems research. Four-phase phase shift keyi... As an important part of the communication system, synchronization technology is a communication system to run the correct protection, has been a hot topic in communication systems research. Four-phase phase shift keying (QPSK) circuit structure is relatively simple, and has a good band utilization, in the modern communication has a wide range of applications. Corresponding research on carrier synchronization for QPSK coherent demodulation is carried out. By comparing several carrier recovery loops, The quaternary loose tail loop is selected as carrier recovery loop. First of all, the core part of the digital phase-locked loop analysis and implementation, and finally through the tool Simulink to complete the realization of the system. 展开更多
关键词 carrier Synchronization QUATERNARY LOOSE TAIL Loop SIMULINK Digital communication
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A Carrier Synchronization Algorithm for AutonomousRadio Receiver in Deep Space
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作者 SONG Qingping LIU Rongke 《空间科学学报》 CAS CSCD 北大核心 2015年第3期343-349,共7页
The carrier synchronization algorithm of the autonomous radio for deep space is studied.When the signal modulation is unknown,this paper improves the existing universal carrier synchronization loop for multiple modula... The carrier synchronization algorithm of the autonomous radio for deep space is studied.When the signal modulation is unknown,this paper improves the existing universal carrier synchronization loop for multiple modulations,expands the frequency tracking range of the loop,proposes a Tong detection-based M-ary Phase Shift Keying(M-PSK)signal locking detection algorithm to rapidly and effectively determine whether the current phase discrimination mode matches the modulation mode,so as to independently choose whether to switch the phase discrimination mode.Through theoretical analysis and comparison,it is described that the total detection probability of the algorithm proposed in this paper is significantly higher than the probability of single lock detection.Simulation results show that the algorithm has high detection probabiUty and low computational complexity at a low signal to noise ratio. 展开更多
关键词 Deep space communication AUTONOMOUS RADIO carrier SYNCHRONIZATION DETECTION strategy DETECTION PROBABILITY
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Network-Wide Time Synchronization in Multi-Channel Wireless Sensor Networks
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作者 Jari Nieminen Lijun Qian Riku Jantti 《Wireless Sensor Network》 2011年第2期39-53,共15页
Recent advances in wireless sensor technology have enabled simultaneous exploitation of multiple channels in wireless sensor systems. In this paper, a novel time synchronization algorithm is proposed for multi- channe... Recent advances in wireless sensor technology have enabled simultaneous exploitation of multiple channels in wireless sensor systems. In this paper, a novel time synchronization algorithm is proposed for multi- channel Wireless Sensor Networks (WSNs) called Multi-Channel Time Synchronization (MCTS) protocol. Time synchronization is critical for many WSN applications and enables efficient communications between sensor nodes along with intelligent spectrum access. Contrary to many existing protocols that do not exploit multi-channel communications, the protocol takes advantage of potential multiple channels and distributes the synchronization of different nodes to distinct channels and thus, reduces the convergence time of synchronization processes significantly. 展开更多
关键词 Time Synchronization multi-channel communications Wireless Sensor Networks
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Model-Free Adaptive Frequency Calibration for Voltage-Controlled Oscillators
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作者 Lianghui Xie Zhi Quan +1 位作者 Osama Elnaha Qinglin Zhao 《China Communications》 SCIE CSCD 2023年第1期199-208,共10页
The operating frequency accuracy of the local oscillators is critical for the overall system performance in the communication systems.However,the high-precision oscillators could be too expensive for civil application... The operating frequency accuracy of the local oscillators is critical for the overall system performance in the communication systems.However,the high-precision oscillators could be too expensive for civil applications.In this paper,we propose a model-free adaptive frequency calibration framework for a voltage-controlled crystal oscillator(VCO)equipped with a time to digital converter(TDC),which can significantly improve the frequency accuracy of the VCO thus calibrated.The idea is to utilize a high-precision TDC to directly measure the VCO period which is then passed to a model-free method for working frequency calibration.One advantage of this method is that the working frequency calibration employs the system history of input/output(I/O)data,instead of establishing an accurate VCO voltagecontrolled oscillator model.Another advantage is the lightweight calibration method with low complexity such that it can be implemented on an MCU with limited computation capabilities.Experimental results show that the proposed calibration method can improve the frequency accuracy of a VCO from±20 ppm to±10 ppb,which indicates the promise of the modelfree adaptive frequency calibrator for VCOs. 展开更多
关键词 frequency calibration carrier frequency offset MODEL-FREE adaptive control wireless communication systems
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基于载波通信的低压开关柜温度在线监测装置设计
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作者 江和 《低压电器》 北大核心 2010年第22期34-37,共4页
采用只有8引脚的PIC单片机与一线式通信的温度传感器,设计了基于载波通信的低压开关柜温度在线监测装置。通过仿真与试验验证,验证了该设计的可行性。
关键词 载波通信 低压开关柜 温度在线监测 装置设计 carrier communication Based Low Voltage Monitoring Device 在线监测装置 温度传感器 开关柜温度 PIC单片机 试验验证 一线式 引脚 仿真
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An underwater acoustic direct sequence spread spectrum communication system using dual spread spectrum code 被引量:2
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作者 Lan-jun LIU Jian-fen LI +4 位作者 Lin ZHOU Peng ZHAI Hao ZHAO Jiu-cai JIN Zhi-chao LV 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2018年第8期972-983,共12页
With the goal of achieving high stability and reliability to support underwater point-to-point communications and code division multiple access(CDMA) based underwater networks, a direct sequence spread spectrum based ... With the goal of achieving high stability and reliability to support underwater point-to-point communications and code division multiple access(CDMA) based underwater networks, a direct sequence spread spectrum based underwater acoustic communication system using dual spread spectrum code is proposed. To solve the contradictions between the information data rate and the accuracy of Doppler estimation, channel estimation, and frame synchronization, a data frame structure based on dual spread spectrum code is designed. A long spread spectrum code is used as the training sequence, which can be used for data frame detection and synchronization, Doppler estimation, and channel estimation. A short spread spectrum code is used to modulate the effective information data. A delay cross-correlation algorithm is used for Doppler estimation, and a correlation algorithm is used for channel estimation. For underwater networking, each user is assigned a different pair of spread spectrum codes. Simulation results show that the system has a good anti-multipath, anti-interference, and anti-Doppler performance, the bit error rate can be smaller than 10^(-6) when the signal-to-noise ratio is larger than-10 dB, the data rate can be as high as 355 bits/s, and the system can be used in the downlink of CDMA based networks. 展开更多
关键词 Underwater acoustic communication Direct sequence spread spectrum Doppler estimation and compensation Channel estimation and equalization Gold code Single carrier Code division multiple access
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A Power Reduction Method for Pilot Channel of LEO Satellite Based on Dynamic Compensation 被引量:3
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作者 Yong Zhang Yongning Zhuo +1 位作者 Jian Wang Siyuan Jiang 《China Communications》 SCIE CSCD 2017年第3期55-65,共11页
Since the lower power requirement of code division multiple access(CDMA) than that of other multiple access, the CDMA technology is suitable to be used in low earth orbit(LEO) satellite communication system whose spac... Since the lower power requirement of code division multiple access(CDMA) than that of other multiple access, the CDMA technology is suitable to be used in low earth orbit(LEO) satellite communication system whose space power is limited due to the small size of satellite. The pilot channel of CDMA technology is very important for earth mobile station(EMS) in LEO system to recover carrier and code, but the power requirement of pilot channel is very higher than that of other channels. In this paper, a power reduction method for pilot channel is proposed. By the new method, the power of pilot channel transmitted from LEO satellite is reduced to a lower level. For improving the signal to noise ratio(SNR) of pilot channel with lower power, coherent integration is employed in EMS at the pre-processing stage. Considering the high dynamic situation of LEO satellite, the long period of time for integration will deteriorate the receiving performance of EMS, therefore, a dynamic compensation module is added to carrier tracking loop against the high dynamic. Meanwhile, the transfer function of the new tracking loop and the condition for steadystate zero error are deduced. Numerical examples are provided to demonstrate effectiveness of the proposed approach. 展开更多
关键词 low earth orbit satellite communication dynamic compensation power reduction carrier tracking
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Performance of MC-2D-CDMA over Frequency Selective Channel
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作者 赵刚 《High Technology Letters》 EI CAS 2002年第2期39-42,共4页
The de spreading algorithm of MC 2D CDMA (Multi Carrier 2 Dimension Code Division Multiple Access) uses a simple correlator and complex spread spectrum sequences. Each chip of spreading spectrum sequence is in two sub... The de spreading algorithm of MC 2D CDMA (Multi Carrier 2 Dimension Code Division Multiple Access) uses a simple correlator and complex spread spectrum sequences. Each chip of spreading spectrum sequence is in two sub carriers. With one sub carrier in deep fading, the chip in the other sub carrier would compensate to improve performance. Orthogonal restore correlation (ORC) explained the algorithm. The performance was examined analytically and by computer simulations. The performance is better than that of regular MC 2D CDMA model. 展开更多
关键词 MC 2D CDMA multi carrier CDMA CDMA future mobile communication system
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The New Media Engine for Promoting Chinese Cultural Diffusion: A Case Study of"Confucius Institute Online"
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作者 Huang Ai 《Journalism and Mass Communication》 2012年第12期1158-1164,共7页
As a developing Non-profit Organization (NPO) system for the learning and diffusion of Chinese language and culture around the globe, the Confucius Institute network is becoming more and more important for China's ... As a developing Non-profit Organization (NPO) system for the learning and diffusion of Chinese language and culture around the globe, the Confucius Institute network is becoming more and more important for China's presence and influence in a diversified arena of world cultures. While this network is being enlarged and improved with the Chinese govemment's persistent backing, it is, however, recognized that the influence and efficiency of the institutes are still limited. It might not be essential whether people come primarily as serious language learners, but necessarily, the platform has to be attractive enough for a considerable proportion of users to stick on, making the Confucius Institute System a sustainable cultural service provider. Within the background of information society, the Intemet, mobile service, digital broadcasting, and other types of new media would act as an important effort to help Confucius Institutes to improve the capabilities of interacting with users, offering users with abundant media-rich content, and minimizing users' inconvenience by enhancing users' experience, lowering travel and time cost, and easily providing multi-lingual support. In this paper, we take the platform of Confucius Institute Online (http://www.chinese.cn, the official Intemet portal of the Confucius Institute network) as a case of actuality to analyze how the Confucius Institute system could utilize the communication capability of new media to enrich, enlarge, and enhance the diffusion of Chinese culture and language. Advantages and deficiencies of the planning, design, and layout of the portal's functionality and views are presented, upon which a number of strategic suggestions are raised, for the sake of further improvement of Confucius Institute's efficiency in cultural diffusion and sustainable development. 展开更多
关键词 multi-channel communication Confucius Institute Chinese culture new media Internet
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