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A Dynamic Pilot Allocation Scheme in Massive MIMO Systems 大规模MIMO系统中的动态导频分配方案
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633536
Xinyao Zhang, Jin Xu, Xiaofeng Tao
{"title":"A Dynamic Pilot Allocation Scheme in Massive MIMO Systems","authors":"Xinyao Zhang, Jin Xu, Xiaofeng Tao","doi":"10.1109/APCC.2018.8633536","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633536","url":null,"abstract":"Massive Multi-Input Multi-Output (MIMO) is one of the key technologies for the fifth generation (5G) cellular networks. As the number of antennas increases, pilot contamination (PC) is considered as one of the main limiting factors for the performance of massive MIMO systems. In this paper, a new dynamic pilot allocation scheme is proposed to mitigate the pilot contamination with low complexity. In this scheme, a pilot reuse indicator is introduced and each cell is divided into center zone and edge zone. When the pilots are allocated, the pilots for edge zone users are dynamically selected according to the pilot reuse indicator. So the scheme can mitigate the pilot contamination by reducing pilot repetition in the target cell and neighbor cells, improve the system capacity. Our simulation results show that the proposed scheme can significantly increase the uplink achievable rate and provide better stability in the scenario with nonuniform distributed users, especially with more users and less pilots.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"1 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":"124336802","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
Design of Delayed Ternary PUF Circuit Based on CNFET 基于CNFET的延时三元PUF电路设计
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633454
Zhengyang He, Kai Ren, Jiayan Chen, X. Dai, Zhao Pan, Yuejun Zhang
{"title":"Design of Delayed Ternary PUF Circuit Based on CNFET","authors":"Zhengyang He, Kai Ren, Jiayan Chen, X. Dai, Zhao Pan, Yuejun Zhang","doi":"10.1109/APCC.2018.8633454","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633454","url":null,"abstract":"The Physical Unclonable Function (PUF) circuit generates a random, unclonable key by extracting random deviations of the manufacturing processes. In this paper, a delay ternary PUF (DT-PUF) circuit scheme based on Carbon Nanotube Field Effect Transistor (CNFET) is proposed. In this scheme, the two inputs and two outputs (2I2O) multi-value delay circuit and the multi-valued arbiter circuit is designed by the threshold controllable CNFET. Then, the ternary signals logic 0, logic 1 and logic 2 transmission delay path is realized by cascading multi-bit 2I2O multi-value delay circuits. Secondly, the delay deviation of the two identical transmission paths is set as the random source. With the help of ternary arbiter, the random delay competes to produce the unclonable ternary PUF output data. Finally, the proposed DT-PUF circuit is designed under 32nm CNFET standard model library, and the circuit is simulated and analyzed by HSPICE. Experiment results show that DT-PUF circuit has the correct logic function, and the distribution is 30.3%@logic 0, 36%@logic 1, 33.7%@logic 2, near ideal about 33.3%.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"75 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":"116363074","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: 4
Shape Retrieval with Adjustable Precision for Hole Detection in 3D Wireless Sensor Networks 三维无线传感器网络孔检测的可调精度形状检索
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633476
Zhengyan Ding, Qian Fang, Yaodan Hu, Hongyu Wang, Jun Tao
{"title":"Shape Retrieval with Adjustable Precision for Hole Detection in 3D Wireless Sensor Networks","authors":"Zhengyan Ding, Qian Fang, Yaodan Hu, Hongyu Wang, Jun Tao","doi":"10.1109/APCC.2018.8633476","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633476","url":null,"abstract":"3D Wireless Sensor Networks (WSNs) have attracted considerable attentions due to their geometrical topology characteristics and various application scenarios. Because of the unbalanced energy consumption among the nodes and the obstacles in the sensing space, the holes of the network topology have been one of the main obstacles in the application of the 3D WSNs. The data collection, especially for the data converged at the nodes nearby the holes, depends on the data relaying by the nodes on the boundary of the hole space, which may result in the exhaustive energy consumption of the involved nodes, quickly draining their limited energy and enlarge the hole space further. In this paper, we adopt a 3D clustering approach and propose a Precision-Adjustable Shape Retrieval (PASR) scheme for hole detection in 3D WSNs. In order to provide a fast and efficient hole detection for the network topology, a hierarchical clustering approach is designed by using the adjustable cluster size to conduct data collection for hole detection. Through extensive simulations, our scheme is demonstrated to be able to serve accurate shape retrieval and achieve good balance between the detection precision and the energy consumption.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"1 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":"130629805","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
Device-Centric Positioning using Radiomap Database on Cellular Networks 在蜂窝网络上使用无线电地图数据库的以设备为中心的定位
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633569
Chaeman Lim, Jinwoo Kim, Heyjoong Kang
{"title":"Device-Centric Positioning using Radiomap Database on Cellular Networks","authors":"Chaeman Lim, Jinwoo Kim, Heyjoong Kang","doi":"10.1109/APCC.2018.8633569","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633569","url":null,"abstract":"The Global Positioning System (GPS) is the most effective positioning technique and used mostly in outdoor environments. Unfortunately, GPS consumes considerably high power and excessively drains battery life while tracking locations. Wi-Fi positioning system (WPS) also suffers from the battery drain issues related to prohibitively enormous Wi-Fi scans and network connections while computing locations at a remote server. We point out that a wireless positioning based on cellular networks can provide a reasonable accuracy depending on cell density and in the meantime, impose negligible power consumption. However, the cellular networks were not designed for a positioning purpose. In this paper, we propose a downloadable radiomap database and a Device-Centric Positioning (DCP) based on the radiomap database stored at the mobile terminal’s memory. The DCP is desirable for tracking locations and working at the mobile device in a background manner. The proposed methodology was implemented in the mobile device and evaluated through field tests.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"141 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":"132502906","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
Design of Indoor Temperature Monitoring System based on Narrowband Internet of Things 基于窄带物联网的室内温度监测系统设计
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633539
Xiangxu Chen, Jia Chen, Yuan Wu, L. Qian, Liang Huang, Zhiguo Shi, L. Meng
{"title":"Design of Indoor Temperature Monitoring System based on Narrowband Internet of Things","authors":"Xiangxu Chen, Jia Chen, Yuan Wu, L. Qian, Liang Huang, Zhiguo Shi, L. Meng","doi":"10.1109/APCC.2018.8633539","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633539","url":null,"abstract":"Narrow-band Internet of Things (NB-IoT), one of the emerging paradigms of low power wide area networks (LPWAN) for Internet of Things (IoT), has been envisioned as a promising solution to enable massive connectivity, cost-efficient, and highly reliable Internet of Thing (IoT) systems in future smart cities. In this work, we build up an indoor environment-temperature monitoring system based on NB-IoT. We present a detailed design of our system and illustrate the key technologies. Based on our system and the collected data (i.e., the temperature data), we further design an abnormality-detection mechanism based on the support vector machine (SVM). We provide experimental results to show the performance of our designed system and the proposed abnormality-detection mechanism.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"51 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":"132140258","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
Human Behavior Based Learning Framework for Small Cell Placement in 5G Networks Using Hypergraph Construction 基于人类行为的基于超图构建的5G网络小蜂窝布局学习框架
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633477
Zijie Zheng, Qinghua Chi, Chongxian Wu, Wei Zhou, Lingyang Song
{"title":"Human Behavior Based Learning Framework for Small Cell Placement in 5G Networks Using Hypergraph Construction","authors":"Zijie Zheng, Qinghua Chi, Chongxian Wu, Wei Zhou, Lingyang Song","doi":"10.1109/APCC.2018.8633477","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633477","url":null,"abstract":"In this paper, we consider the 3 dimensional (3D) small cell basestations (SBSs) placement problem for hetergeneous users with incomplete QoS requirements. We propose a learning embedded hypergraph construction algorithm to jointly predict the heterogeneous users’ QoS requirements and deploy the SBSs to cover as many users as possible. Specifically, we predict and leverage users’ QoS requirements with a real-world dataset, China Family Panel Studies (CFPS), and design a human behavior based learning framework (HBLF) to anticipate users’ QoS requirements with users’ profiles. Then, based on HBLF, we propose a hypergraph construction algorithm to deploy the SBSs. Simulation results indicate that the learning embedded hypergraph construction can use the least number of SBSs to cover all users compared with a number of algorithms, such as K-means. The HBLF can achieve a higher coverage ratio of users compared with other learning algorithms, such as decision tree. Simulation results also corroborate that the more accurately we can predict the users’ QoS requirements, the more users we can satisfy their QoS requirements.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"3 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":"125344874","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
Blind Equalization of Sparse Code Multiple Access Algorithm in Multipath Propagation 稀疏码多址算法在多径传播中的盲均衡
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633474
Xiangying Qin, Cai Qin, Chaowei Wang, Weidong Wang
{"title":"Blind Equalization of Sparse Code Multiple Access Algorithm in Multipath Propagation","authors":"Xiangying Qin, Cai Qin, Chaowei Wang, Weidong Wang","doi":"10.1109/APCC.2018.8633474","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633474","url":null,"abstract":"Sparse Code Multiple Access (SCMA) is a new air interface technology that is proposed for lower delay, higher capacity and spectrum utilization in 5G communications. The inter-symbol interference(ISI) in wireless communications is serious due to the effects of multipath propagation and background noise. In order to reduce inter-symbol interference, many wireless air interface and radio access technologies adopt cyclic prefixes to obtain channel estimation. However, the spectrum utilization of this method is too low. Considering the blind equalization algorithm is often used in the environment where spectrum resources are scarce, in this paper we adop the blind equalization algorithm in the SCMA technology. In SCMA, the equalization cannot placed on receiver, so we innovatively put the equalization algorithm in the signal transmitter according to the actual situation. In addition, we propose a channel estimation algorithm. Theory and simulation show that applying blind equalization to SCMA can reduce bit error rate and improve spectrum utilization.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"11 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120997458","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
Degradation of transmission range in three-dimensional scenarios of VANETs VANETs三维场景下传输范围的退化
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633490
Lina Zhu, Changle Li, Jianjia Yi, T. Luan
{"title":"Degradation of transmission range in three-dimensional scenarios of VANETs","authors":"Lina Zhu, Changle Li, Jianjia Yi, T. Luan","doi":"10.1109/APCC.2018.8633490","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633490","url":null,"abstract":"In vehicular ad hoc networks (VANETs), three-dimensional scenarios are always ignored, even though they are attractive for their effectiveness in land use. Focusing on those scenarios, we propose and prove their severe impacts on the performance of a vehicular network. We first conduct a transmission experiment. The results prove that the existence of those scenarios induces the inter-layer communication, and then significantly reduces the transmission range. Furthermore, we demonstrate that the variation of the transmission range makes an enormous difference in the neighbor number, which severely affects the network performance. At last, our extensive simulations show that the aforementioned analysis are in fact quite accurate.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"28 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":"127009122","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
DEMO: A Quagga-Based OSPF Routing Protocol with QoS Guarantees 演示:具有QoS保证的基于quagga的OSPF路由协议
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633493
Yu Chen, Yifeng He, Zhengquan Zhao, Xuanhan Liang, Qimei Cui, Xiaofeng Tao
{"title":"DEMO: A Quagga-Based OSPF Routing Protocol with QoS Guarantees","authors":"Yu Chen, Yifeng He, Zhengquan Zhao, Xuanhan Liang, Qimei Cui, Xiaofeng Tao","doi":"10.1109/APCC.2018.8633493","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633493","url":null,"abstract":"Open Shortest Path First (OSPF) is a widely used routing protocol, which uses cost to find the shortest path. In this paper, we develop an extension to OSPF to support QoS guarantees by replacing the cost metric with end-to-end (E2E) delay. Particulary, we propose a new stream-based Dijkstra’s algorithm to find the minimum E2E delay path for any traffic stream and implement this algorithm in Quagga OSPF, a network routing software suite. Experimental results show that our proposed protocol reduces E2E delays compared with unmodified OSPF routing protocol.","PeriodicalId":299723,"journal":{"name":"2018 24th Asia-Pacific Conference on Communications (APCC)","volume":"14 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":"133645913","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
Reflection Based Resource Allocation for Indoor mmWave D2D Communications 基于反射的室内毫米波D2D通信资源分配
2018 24th Asia-Pacific Conference on Communications (APCC) Pub Date : 2018-11-01 DOI: 10.1109/APCC.2018.8633560
Lei Wang, Xiaoting Yu, Yanshan Chen, Mingkai Chen
{"title":"Reflection Based Resource Allocation for Indoor mmWave D2D Communications","authors":"Lei Wang, Xiaoting Yu, Yanshan Chen, Mingkai Chen","doi":"10.1109/APCC.2018.8633560","DOIUrl":"https://doi.org/10.1109/APCC.2018.8633560","url":null,"abstract":"The abundant spectrum resources in millimeterwave (mmWave) frequency band enable high throughput for indoor communications. However, the huge path loss and high blockage probability result in vulnerability during transmission. The performance of propagation is severely influenced by blocked odds according to the reflections off smooth surfaces. In this paper, we propose a random blockage model to characterize the reflections off the walls and ceiling. To adjust the variant transmission which is suffering different reflections, we first propose a combinational temperature random algorithm (CTRA) to arrange resource blocks with plausible availability. The CTAR includes two phases: partition and matching, which highly enhance the average throughput. The main conclusions are that the modified algorithm brings about higher system throughput with appropriate temperature factors and performances much better.","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":"131908333","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
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