2017 European Conference on Networks and Communications (EuCNC)最新文献

Lousy processing increases energy efficiency in massive MIMO systems 糟糕的处理提高了大规模MIMO系统的能源效率

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-07-17 DOI: 10.1109/EuCNC.2017.7980739

Sara Gunnarsson, Micaela Bortas, Yanxiang Huang, Cheng-Ming Chen, L. Perre, O. Edfors

{"title":"Lousy processing increases energy efficiency in massive MIMO systems","authors":"Sara Gunnarsson, Micaela Bortas, Yanxiang Huang, Cheng-Ming Chen, L. Perre, O. Edfors","doi":"10.1109/EuCNC.2017.7980739","DOIUrl":"https://doi.org/10.1109/EuCNC.2017.7980739","url":null,"abstract":"Massive MIMO (MaMIMO) is a key technology for 5G wireless communication, enabling large increase in both spectral and energy efficiency at the same time. Before it can be deployed, it is important to find efficient implementation strategies. Because of the many antennas, an essential part of decreasing complexity, and further improving energy efficiency, is optimization of the digital signal processing (DSP) in the per-antenna functions. Assuming an orthogonal frequency-division multiplexing (OFDM) based MaMIMO system, this paper explores coarse quantization in the per-antenna digital transmit filters and inverse fast Fourier transforms (IFFTs) and evaluates it in terms of performance and complexity savings. Results show that DSP complexity can be greatly reduced per-antenna, and therefore significant power savings can be achieved, with limited performance degradation. More specifically, when going towards MaMIMO and therefore increasing the number of antennas from 8 to 64, it is possible to reduce the complexity in each transmit filter by 55%. Also, when using 6 bits to represent the input signal and 6 bits for the filter coefficients, this results in an SNR degradation of less than 0.5 dB compared to floating-point performance. Consequently, we conclude that the overall system energy greatly benefits from lousy per-antenna processing.","PeriodicalId":6626,"journal":{"name":"2017 European Conference on Networks and Communications (EuCNC)","volume":"43 1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77833645","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

Link performance evaluation for mm-Wave systems 毫米波系统链路性能评估

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-07-17 DOI: 10.1109/EuCNC.2017.7980712

Vaia Kalokidou, T. Pelham, M. Beach, P. Legg, Andy Lunness

引用次数: 1

Antenna configuration comparison in challenging NLOS locations 具有挑战性的NLOS位置的天线配置比较

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980710

Juha Erkkila, Marjut Koskela, J. Heikkilä, Tuomo Kupiainen, Marjo Heikkilä, Tero Kippola, Asko Nykänen, Risto Saukkonen

{"title":"Antenna configuration comparison in challenging NLOS locations","authors":"Juha Erkkila, Marjut Koskela, J. Heikkilä, Tuomo Kupiainen, Marjo Heikkilä, Tero Kippola, Asko Nykänen, Risto Saukkonen","doi":"10.1109/EuCNC.2017.7980710","DOIUrl":"https://doi.org/10.1109/EuCNC.2017.7980710","url":null,"abstract":"The objective of this paper is to compare uplink (UL) performance with different antenna technologies when receiving Non-Line of Sight (NLOS) signal in field tests. The antenna configurations in use were a passive antenna system and an active antenna system (AAS). The radiation pattern can be controlled horizontally by changing its azimuth angle and vertically by changing the tilt angle of the antenna. AAS includes a flexible configuration that consists of diversity beams and other features for beam controlling. The field trial benefitted 2-way and 4-way receive (RX) diversity in both antenna systems. The field trial environment consists of three macro-cellular Long Term Evolution (LTE) evolved Node B (eNB) operating in 2.1 GHz band. This trial environment has two AAS and one passive system in use for the measurements. The environment can encompass one macro cell and with vertical controlling, it is possible to add an additional beam and with horizontal controlling it is possible to steer the main beam towards the user equipment (UE). Field trial used drive test software to evaluate the test network performance. Mobile network user had UE in drive testing to evaluate cellular network quality from the mobile device's point of view. The field trial results indicate that AAS beam controlling can achieve remarkable capacity gain in uplink direction when UE does not have a line of sight to the eNB.","PeriodicalId":6626,"journal":{"name":"2017 European Conference on Networks and Communications (EuCNC)","volume":"179 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77004415","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: 3

Internet of skills, where robotics meets AI, 5G and the Tactile Internet 技能互联网，机器人与人工智能、5G和触觉互联网的结合

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980645

M. Dohler, Toktam Mahmoodi, M. Lema, M. Condoluci, Fragkiskos Sardis, Konstantinos Antonakoglou, H. Aghvami

引用次数: 107

Performance evaluation of adaptive beamforming in 5G-V2X networks 5G-V2X网络自适应波束形成性能评估

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980728

Ilmari Maskulainen, P. Luoto, P. Pirinen, M. Bennis, K. Horneman, M. Latva-aho

{"title":"Performance evaluation of adaptive beamforming in 5G-V2X networks","authors":"Ilmari Maskulainen, P. Luoto, P. Pirinen, M. Bennis, K. Horneman, M. Latva-aho","doi":"10.1109/EuCNC.2017.7980728","DOIUrl":"https://doi.org/10.1109/EuCNC.2017.7980728","url":null,"abstract":"Vehicles are the third fastest growing connected device type after smart phones and tablets. Also, automotive industry is interested to get more vehicles connected to the internet to improve traffic safety and efficiency. This creates a need for Vehicle-to-Everything (V2X) communications. In this work, the possibility of exploiting beamforming in LTE-V2X is considered. Singular value decomposition (SVD) receiver and precoder is implemented in an LTE-A system level simulator and the performance on multi-lane highway scenario is simulated and analyzed in downlink Vehicle-to-Infrastructure (V2I) scenario. The performance is compared to the conventional maximum-ratio combining (MRC) and LTE codebook precoded minimum mean square error (MMSE) receivers. In addition, the switched-beam beamforming is imitated by modified antenna patterns with 7 and 15 narrow beams. The results show that the SVD receiver provides gain compared to the conventional MRC and MMSE receivers in ideal scenario. Furthermore, with modified antenna patterns, the performance was enhanced when compared to the default antenna pattern.","PeriodicalId":6626,"journal":{"name":"2017 European Conference on Networks and Communications (EuCNC)","volume":"2015 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87768962","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: 18

Multi-core fiber undersea transmission systems 多芯光纤海底传输系统

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980781

M. Nooruzzaman, T. Morioka

引用次数: 0

Sparse doubly-selective channels: Estimating path parameters unambiguously 稀疏双选择通道:明确估计路径参数

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980687

Kelvin Chelli, Praharsha Sirsi, T. Herfet

{"title":"Sparse doubly-selective channels: Estimating path parameters unambiguously","authors":"Kelvin Chelli, Praharsha Sirsi, T. Herfet","doi":"10.1109/EuCNC.2017.7980687","DOIUrl":"https://doi.org/10.1109/EuCNC.2017.7980687","url":null,"abstract":"Doubly selective channels or time-varying multipath channels occur when communication systems are expected to work in a highly mobile environment. The estimation and the subsequent equalization of such channels is a non-trivial task. Thus, a channel estimation scheme that is robust, precise and works with a complexity that is applicable for consumer applications is vital to overcome the effects of such a channel at the receiver. The Matching Pursuit (MP) algorithm is a Compressed Sensing (CS) scheme that is shown to work well in scenarios of high mobility. However, good performance is achieved only when the right search metric is used. In this paper, an appropriate metric for the estimation of the multipath delays is proposed. It is shown that this metric produces an accurate estimate of the multipath delays under different channel conditions. In addition to this, a novel method that implicitly estimates the Doppler shift is proposed. The results show that the proposed schemes accurately estimate a doubly selective channel as compared to the classical MP and the Least Squares (LS) channel estimate. Moreover, an implicit estimation of the Doppler shift reduces the computational burden at the receiver resulting in a lower complexity when compared to the classical MP algorithm. The proposed scheme is implemented for the IEEE 802.11p standard and is applicable in any Orthogonal Frequency-Division Multiplexing (OFDM) based wireless system that is expected to work in highly mobile environments, specifically for 5G.","PeriodicalId":6626,"journal":{"name":"2017 European Conference on Networks and Communications (EuCNC)","volume":"27 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83665647","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: 7

Filter design for 5G BF-OFDM waveform 5G BF-OFDM波形滤波器设计

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980688

David Demmer, R. Gerzaguet, Jean-Baptiste Doré, D. L. Ruyet, D. Kténas

引用次数: 7

Decentralized Communications: Trustworthy interoperability in peer-to-peer networks 分散通信:点对点网络中可靠的互操作性

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980649

P. Chainho, Steffen Druesedow, R. Pereira, Ricardo Chaves, Nuno Santos, Kay Haensge, Antón Román Portabales

{"title":"Decentralized Communications: Trustworthy interoperability in peer-to-peer networks","authors":"P. Chainho, Steffen Druesedow, R. Pereira, Ricardo Chaves, Nuno Santos, Kay Haensge, Antón Román Portabales","doi":"10.1109/EuCNC.2017.7980649","DOIUrl":"https://doi.org/10.1109/EuCNC.2017.7980649","url":null,"abstract":"This paper introduces a new communication paradigm called Decentralized Communications, which enables cross-domain communication services to trustfully use peer-to-peer networks. Decentralized Communication services are inherently inter-operable without the need to standardize protocols or service APIs. This property is achieved by using the Protocol-on-the-fly concept and the Reporter-Observer communication pattern. Users can select Identity Providers to mutually authenticate themselves and secure communications, independently of the Communication Service Provider. Decentralized Communications can be applied to any kind of communication, including human-to-human, human-to-things, and things-to-things communication. The reTHINK project has developed an Open Source reference implementation of a Decentralized Communications framework, which was successfully used in various challenging scenarios. The results of this project demonstrate the feasibility to enhance interoperability and users' privacy, and the freedom to select whom to trust, without slowing down ICT innovation pace. It is expected that Decentralized Communications will impact the design of more agile Service Delivery frameworks for Internet of Things and 5G networks.","PeriodicalId":6626,"journal":{"name":"2017 European Conference on Networks and Communications (EuCNC)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2017-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84828065","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: 7

Outage probability analysis in finite wireless networks operating in LOS environment LOS环境下有限无线网络的中断概率分析

2017 European Conference on Networks and Communications (EuCNC) Pub Date : 2017-06-12 DOI: 10.1109/EuCNC.2017.7980782

N. Ermolova

引用次数: 1