2018 15th International Symposium on Wireless Communication Systems (ISWCS)最新文献_第5页

Latency Reduction in Narrowband 4G LTE Networks 窄带4G LTE网络的延迟降低

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491085

Zubair Amjad, A. Sikora, Jean-Philippe Lauffenburger, B. Hilt

引用次数: 7

NB-IoT Optimization on Paging MCS and Coverage Level 基于寻呼MCS和覆盖级别的NB-IoT优化

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491101

Haheon Chung, Sunguk Lee, Junho Jeong

引用次数: 9

Joint Cache Placement and Beamforming Design for Scalable Videos in C-RAN C-RAN中可扩展视频的联合缓存放置和波束形成设计

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491057

Mingfeng Ma, Tiejun Lv, Xuewei Zhang

{"title":"Joint Cache Placement and Beamforming Design for Scalable Videos in C-RAN","authors":"Mingfeng Ma, Tiejun Lv, Xuewei Zhang","doi":"10.1109/ISWCS.2018.8491057","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491057","url":null,"abstract":"This paper investigates the joint optimization of layered caching and beamforming design for scalable videos delivered by Dynamic Adaptive Streaming over HTTP in the multicell cloud radio access network. To transmit differential scalable videos, each video is divided into a base layer and a set of enhancement layers based on scalable video coding. Taking the layered property of scalable videos into account, we propose a layered caching scheme, i.e., multiple layers of different scalable videos are cached in the baseband unit pool and the cache-enabled cluster respectively, which alleviates the burden of backhaul links effectively. Since the quality of videos received by each user depends on the available bandwidth, the appropriate scalable videos are provided for users based on the transmission rates. To provide superior video quality for users, we aim to maximize the sum rate for users accessing the remote radio heads and regard the backhaul consumption as a quality of service constraint explicitly. Then, the weighted sum rate maximization problem is formulated, which can be converted into a quadratically constrained quadratic programming problem through the l0-norm approximation technique and the weighted minimum mean square error approach. Finally, simulation results demonstrate the superiority of the proposed scheme.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130381009","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

A Testbed for Experimental Performance Evaluation of Multicarrier Waveforms in Presence of RF PA 射频放大器存在下多载波波形实验性能评价的试验台

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491253

R. Zayani, H. Shaiek, C. Alexandre, A. Kielys, Xinying Cheng, Xiaotian Fu, D. Roviras

引用次数: 3

Using Low Cost Embedded Systems for Respiratory Sounds Auscultation 使用低成本的嵌入式系统进行呼吸声音听诊

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491232

João T. Fernandes, B. Racha, Rui Pedro Paiva, T. Cruz

引用次数: 1

Geographic Routing Based on Social Dynamic Features Aware in Vehicle Social Network 车辆社交网络中基于社会动态特征感知的地理路由

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491034

Qing Liao, Jingyi Zhang

引用次数: 4

A Low Complexity Solution for Resource Allocation and SDMA Grouping in Massive MIMO Systems 大规模MIMO系统中资源分配和SDMA分组的低复杂度解决方案

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491076

Weskley V. F. Maurício, D. C. Araújo, F. H. C. Neto, F. Lima, T. Maciel

{"title":"A Low Complexity Solution for Resource Allocation and SDMA Grouping in Massive MIMO Systems","authors":"Weskley V. F. Maurício, D. C. Araújo, F. H. C. Neto, F. Lima, T. Maciel","doi":"10.1109/ISWCS.2018.8491076","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491076","url":null,"abstract":"This work investigates the space-division multiple access grouping problem in multiuser massive multiple input multiple output (MIMO). The adopted approach consists in performing firstly the K-means algorithm, that is a classification algorithm well known in machine learning field, to split mobile stations (MSs) into spatially compatible clusters based on the knowledge of the users' spatial covariance matrices. Secondly, it schedules a sub-set of MSs from each cluster thus supporting multiple spatial streams per cluster. Furthermore, the MSs are selected based on a metric that accounts for the trade-off between their spatial channel correlation and channel gain. The corresponding scheduling is optimally solved by using branch and bound (BB) and best fit (BF) algorithms. Moreover, we compare the proposed solutions with the random scheduler that performs clustering and chooses the MSs to compose the groups at random. The simulation results show that the two proposed solutions, BB and BF outperform, the random scheduler. The BB and BF solutions achieve similar capacity performance, but the first has polynomial-time computational complexity while the second a exponential computational complexity.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131151328","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: 10

A Compressive Sensing Based Multi-user Detection Algorithm for SIMa-NOMA Systems 基于压缩感知的SIMa-NOMA系统多用户检测算法

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491213

Xiaojuan Zhao, Shou-yi Yang, Aihua Zhang, Xiaoyu Li

引用次数: 2

An Adaptive GPSR Routing Protocol for VANETs 面向vanet的自适应GPSR路由协议

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491075

Andrey Silva, K. Reza, Aurenice M. Oliveira

{"title":"An Adaptive GPSR Routing Protocol for VANETs","authors":"Andrey Silva, K. Reza, Aurenice M. Oliveira","doi":"10.1109/ISWCS.2018.8491075","DOIUrl":"https://doi.org/10.1109/ISWCS.2018.8491075","url":null,"abstract":"The fast topology change and high-speed mobility of vehicles, as well as the limited radio range, usually lead to wrong packet forwarding decisions in highly dynamic Vehicular Ad Hoc Network (VANET). This type of environment makes data routing very challenging. Position-based routing protocols are popular for VANET due to the availability of GPS devices. Geographic Perimeter Stateless Routing (GPSR) has been widely adopted to cope up with VANET challenges. Nevertheless, there are still improvements that could be incorporated into GPSR to make it more reliable and efficient. In this paper, we describe an Adaptive GPSR (AGPSR), including additional information in the Neighbors Table to select the best path and bypass the nodes that delivered the previous packets in recovery mode. This approach can avoid possible link-breakage due to for instance a road accident. We compared our results with the traditional GPSR using the Simulation of Urban MObility (SUMO) and Network Simulator-version 3 (NS-3) for both static and mobility scenarios. Our results show that the proposed AGPSR strategy has better performance than traditional GPSR when packet delivery ratio, lost packets and hop count are used as performance metrics.","PeriodicalId":272951,"journal":{"name":"2018 15th International Symposium on Wireless Communication Systems (ISWCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132960897","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: 16

Secrecy Analysis of EGT and MRT Precoders for M -QAM Constellations M -QAM星座中EGT和MRT预编码器的保密性分析

2018 15th International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2018-08-01 DOI: 10.1109/ISWCS.2018.8491091

Gustavo Anjos, D. Castanheira, Adão Silva, A. Gameiro

引用次数: 0