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2018 24th Asia-Pacific Conference on Communications (APCC)最新文献

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Time-Synchronized Control-Channel Multiplexing Scheme Using Cyclic-Shifted Zadoff-Chu Sequences for Full Duplex 基于周期移位Zadoff-Chu序列的全双工时间同步控制信道复用方案
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633533
M. Sawahashi, H. Yamada, Aya Shimura, Y. Kishiyama
{"title":"Time-Synchronized Control-Channel Multiplexing Scheme Using Cyclic-Shifted Zadoff-Chu Sequences for Full Duplex","authors":"M. Sawahashi, H. Yamada, Aya Shimura, Y. Kishiyama","doi":"10.1109/APCC.2018.8633533","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633533","url":null,"abstract":"This paper proposes a time-synchronized control-channel multiplexing scheme using cyclic-shifted Zadoff-Chu sequences for full duplex (FD) aiming at decreasing the latency due to feedback control signals. In the proposed scheme, a set of different cyclic-shift resources of a Zadoff-Chu sequence with the same root index are assigned to control signals in both the downlink and uplink that are multiplexed in time-synchronized subframes accompanied with a cyclic prefix and cyclic suffix. Because the cross-correlation of the different cyclic-shifted Zadoff-Chu sequences with the same root index is quite low, the self-interference (SI) or co-channel interference (CCI) that leaks from its own transmitter or that of another set of user equipment to a receiver is suppressed to a very low level after despreading in the frequency domain. As a result, the significantly reduced SI or CCI after despreading results in a decreased level of complexity for the SI or CCI canceller, i.e., particularly the digital interference canceller. The computed cross-correlation results show that the cross-correlations among different cyclic-shift indices become almost zero. Based on the computed cross-correlations of the cyclic-shifted Zadoff-Chu sequences, we discuss the receiver structures including SI rejection methods for a base station and UE. Because control signals are multiplexed in every subframe in the downlink and uplink, the proposed control-channel multiplexing is applicable to low-rate control signals that require low latency.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131309107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An Optimal Antenna Deployment for MIMO Relay Systems in High-speed Railway 高速铁路中MIMO中继系统的天线优化部署
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633502
Anyun Chen, Junhui Zhao, Yu Yao, Longxia Liao, Chuanyun Wang
{"title":"An Optimal Antenna Deployment for MIMO Relay Systems in High-speed Railway","authors":"Anyun Chen, Junhui Zhao, Yu Yao, Longxia Liao, Chuanyun Wang","doi":"10.1109/APCC.2018.8633502","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633502","url":null,"abstract":"This paper presents a variable density (sinusoidal) antenna deployment scheme which is designed for mobile relay (MR) system of the high-speed train. By analyzing the large-scale fading under the high-speed railway (HSR) wireless channel environment, the instantaneous channel capacity and the total service amount of several antenna deployments are derived. Theoretical analysis and simulation results indicate that the proposed deployment can provide higher capacity for the HSR relay system. Comparing with several traditional deployments, the proposed deployment utilizes the feature of the HSR wireless environment, provides better coverage to the edge of the base stations (BS). In addition, an antenna selection scheme is proposed based on the sinusoidal deployment.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132462192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Max-FUS Caching Replacement Algorithm for Edge Computing 边缘计算的Max-FUS缓存替换算法
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633567
Falu Xiao, Linfeng Yuan, Desheng Wang, Haojie Cai, Xiaoqiang Ma
{"title":"Max-FUS Caching Replacement Algorithm for Edge Computing","authors":"Falu Xiao, Linfeng Yuan, Desheng Wang, Haojie Cai, Xiaoqiang Ma","doi":"10.1109/APCC.2018.8633567","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633567","url":null,"abstract":"Edge computing technology can greatly reduce the network load and the user response delay, which can effectively make up the defect of the cloud computing. However, edge storage nodes have much smaller space than cloud computing, therefore it is necessary to select an appropriate cache replacement policy to replace data that some users do not frequently request in order to cache the newly accessed data. This paper focuses on the problem of data replacement and the corresponding replacement strategy when the edge storage node lacks buffer space. Maximum file utility of system (Max-FUS) caching replacement algorithm are proposed to solve this problem. Finally, the edge computing system model, which is established in order to verify the feasibility of the algorithm by MATLAB simulation experiment, shows the Max-FUS can achieve better performance than the existing methods.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133594219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Improved convolutional neural network algorithm based on weight freezing method 基于权值冻结法的改进卷积神经网络算法
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633538
Yuming Han, Lidong Zhu
{"title":"Improved convolutional neural network algorithm based on weight freezing method","authors":"Yuming Han, Lidong Zhu","doi":"10.1109/APCC.2018.8633538","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633538","url":null,"abstract":"As neural network became one of the indispensable technologies in many fields, a large number of data processing methods emerged one after another. Convolutional neural network (CNN) soon became a useful tool to classify images. However, the drawback of CNN is quite obviously, which is the training time would be tremendous long if the network running on CPU. To tackle this issue, this paper improves the BP algorithm based on the weight freezing method and entropy weight data processing method, and uses the experiment to verify the effectiveness of this approach. With MNIST handwritten database, CIFAR-10 database and PUBFIG83 and LFW database as background, the original LeNet-5 model has been optimized and the back propagation (BP) algorithm used in the original network training is improved. The results show that the improved algorithm can effectively reduce the complexity of the algorithm, and the training time reduces to 8%.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114785153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Relay Selection and Power Allocation for Full-Duplex Decode-and-Forward Relay Cooperative Networks 全双工解码转发中继合作网络的中继选择和功率分配
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633543
Dandi Wang, Siye Wang
{"title":"Relay Selection and Power Allocation for Full-Duplex Decode-and-Forward Relay Cooperative Networks","authors":"Dandi Wang, Siye Wang","doi":"10.1109/APCC.2018.8633543","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633543","url":null,"abstract":"In this paper, outage probability is investigated for full-duplex (FD) multi-relay networks with decode-and-forward (DF) protocol. Since FD operation allows node to transmit and receive signals on the same frequency band simultaneously, loop interference (LI) caused by power leakage between transmit and receive antennas is inevitable and deteriorates system performance. We propose five relay selection strategies based on different channel situation information (CSI) and obtain closed-form expressions of outage probability for them. Furthermore, two power allocation algorithms are proposed to optimize outage performance and their closed-form optimal allocation solutions are derived. Numerical simulation is made to facilitate comparison and verify our analysis. By observing simulations, we find that outage performance can be significantly enhanced by power allocation and both proposed allocation algorithms have their pros and cons.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115396225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Study on the Coexistence of TD-LTE/5G and Mobile Satellite Service TD-LTE/5G与移动卫星业务共存研究
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633559
Jun Yuan, Zhendong Li, Man Liu, Xin Lv, Ying Wang
{"title":"A Study on the Coexistence of TD-LTE/5G and Mobile Satellite Service","authors":"Jun Yuan, Zhendong Li, Man Liu, Xin Lv, Ying Wang","doi":"10.1109/APCC.2018.8633559","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633559","url":null,"abstract":"With the continuous development of emerging information technologies, the preciousness and scarcity of wireless spectrum resources are becoming increasingly prominent. With the rapid development of wireless mobile communications, Long Term Evolution (LTE) system is actively studied and widely deployed. Meanwhile, the satellite communication system is also one of the research hotspots in recent years. The compatibility analysis of the two systems in the adjacent frequency and the same frequency has far-reaching significance. In this paper, we study the coexistence of TD-LTE system and mobile satellite services (MSS). By the deterministic analysis based on the link budget criteria, the coexistence conditions between TD-LTE and the typical MSS system in the worst case are studied. In addition, the system-level simulation based on Monte Carlo is used to study the interference coexistence between the two systems in different scenarios. For the analysis results, the conditions for coexistence of the TD-LTE system and the typical MSS system are given and practical suggestions are made. Finally, some issues that need to be considered in the coexistence problem between 5G and the typical mobile satellite service system, as well as preliminary assessments, are proposed.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114726729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
A broadband power amplifier with an extended efficiency at 3.3-3.6 GHz 一种具有3.3-3.6 GHz扩展效率的宽带功率放大器
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633550
X. Yin, Jun Li, H. Jin, Huafeng Wen, Taijun Liu
{"title":"A broadband power amplifier with an extended efficiency at 3.3-3.6 GHz","authors":"X. Yin, Jun Li, H. Jin, Huafeng Wen, Taijun Liu","doi":"10.1109/APCC.2018.8633550","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633550","url":null,"abstract":"This paper propose a broadband power amplifier(PA) with an extended efficiency range for 5G application at 3.3-3.6 GHz. In this design, we use gallium nitride(GaN) high electron mobility transistor(HEMT) with load-pull technology and conjugate matching method. The power added efficiency(PAE) of the power amplifier has been at 60% at an average output power of 40dBm, which is 1dB back-off from the peak output power of 41dBm. The simulation results clearly show that it performs well.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122044943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of SDN-based bandwidth estimation in Mobile Broad Band networks 移动宽带网络中基于sdn的带宽估计评估
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633562
Giuseppe Aceto, Fabio Palumbo, V. Persico, H. Chen, A. Pescapé
{"title":"Evaluation of SDN-based bandwidth estimation in Mobile Broad Band networks","authors":"Giuseppe Aceto, Fabio Palumbo, V. Persico, H. Chen, A. Pescapé","doi":"10.1109/APCC.2018.8633562","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633562","url":null,"abstract":"Mobile Broad Band (MBB) networks and Software-Defined Networking (SDN) are expected to strongly characterize the future evolution of global communications envisioned by the Fifth Generation mobile networks (5G). Although SDN has seen adoption and wide experimentation in data-center networks, its benefits and challenges in MBB has not received comparable coverage. In this work we experiment with a state-of-art SDN-based approach for passive monitoring available bandwidth and throughput with an OpenFlow switch in the mobile node. We evaluate the approach on a real-world commercial 4G network (leveraging the MONROE platform), considering two deployments (with an SDN controller local to the mobile node, and a remote one, whose control messages traverse the radio access network) and compare the results of the experiments against analogous deployments in a fully-wired testbed. For both the local and remote deployments, different polling periods, in different traffic conditions, are considered. Results show that, while further research is needed to investigate the variability of the relative error (standard deviation ranges between 1.21 and 8.65% in the worst case), its mean is very low, confirming the feasibility of the proposed estimation approach.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125349521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Velocity Based HMM Framework for Indoor Localization 基于速度的HMM室内定位框架
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633478
Hao Chen, Xiaofeng Tao, Yifan Zhang, Wei Li, Ping Zhang
{"title":"A Velocity Based HMM Framework for Indoor Localization","authors":"Hao Chen, Xiaofeng Tao, Yifan Zhang, Wei Li, Ping Zhang","doi":"10.1109/APCC.2018.8633478","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633478","url":null,"abstract":"Indoor fingerprint location is widely used in passenger flow analysis, location based service, and security monitoring. RSS is usually used as signal fingerprint. However, in these applications the acquisition process relies on the uplink data transmission of the target device. These signals are often non-normally distributed and fluctuate greatly when the target moves. In order to cope with the above difficulties, this paper proposes a hidden markov model (HMM) framework based on targets maximum speed. It combines the speed parameters with path constraints to improve the calculation of state transition matrix. The kernel density estimation method based on the Wiener process is also used to solve the confusion matrix of HMM, which improves the accuracy of estimating the RSS distribution of the uplink signal. The performance of the algorithm are compared with the traditional HMM and NB methods in an actual indoor scenario. The influence of the target moving speed and the length of the observation sequence on the positioning accuracy is also analyzed.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121321332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pilot Assignment and Channel Estimation via Deep Neural Network 基于深度神经网络的导频分配与信道估计
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633453
Seung-Hee Lee, Hyungyu Ju, B. Shim
{"title":"Pilot Assignment and Channel Estimation via Deep Neural Network","authors":"Seung-Hee Lee, Hyungyu Ju, B. Shim","doi":"10.1109/APCC.2018.8633453","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633453","url":null,"abstract":"In orthogonal frequency division multiplexing (OFDM) systems, channel estimation is by far the most important operation in the receiver to ensure the accurate detection and decoding. Over the years, pilot-aided channel estimation has been widely used for this purpose. In open-loop systems, since there is no feedback link between the transmitter and receiver, an approach based on the equi-spaced pilot assignment has been widely employed. In this paper, we propose a closed-loop non-uniform pilot allocation strategy based on deep neural network (DNN) technique. From the numerical evaluations, we show that the proposed autoencoder-based pilot allocation technique outperforms conventional approaches by a large margin, demonstrating its ability to learn the statistical characteristics of the wireless channel.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121692748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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