2014 IEEE Global Communications Conference最新文献_第8页

Achievable rates for uplink communications in LTE-advanced networks with decode-and-forward relays 具有解码转发中继的lte高级网络中上行通信的可实现速率

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037461

Xiaoxiao Zhang, Xuemin Shen, Liang-Liang Xie

引用次数: 2

Balancing traffic load for devolved controllers in data center networks 数据中心网络中分散控制器的流量负载均衡

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037144

Wanchao Liang, Xiaofeng Gao, Fan Wu, Guihai Clien, Wei Wei

引用次数: 11

Feasibility of a TV whitespaces enabled broadband network for high-speed trains 高速列车电视空白宽带网络的可行性

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036932

Andreas Achtzehn, Dominik Deling, M. Petrova

引用次数: 5

Low power synchronization design for large bandwidth wireless LAN systems 大带宽无线局域网系统的低功耗同步设计

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037336

S. Rajagopal, S. Abu-Surra, Eran Pisek

{"title":"Low power synchronization design for large bandwidth wireless LAN systems","authors":"S. Rajagopal, S. Abu-Surra, Eran Pisek","doi":"10.1109/GLOCOM.2014.7037336","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037336","url":null,"abstract":"Wireless LAN systems have been continuously evolving to provide ~10X increase in data rates every five years, exploiting higher mmWave frequencies and larger bandwidths, such as IEEE 802.11ad, providing 6.76 Gb/s using 2.16 GHz of bandwidth at 60 GHz. One of the key technical challenges to successful commercialization of these large bandwidth systems is power consumption. In this paper, we focus on reducing the idle listening mode power consumption where the device is actively looking for packets and the power consumption is dominated by the high speed ADCs. We propose a low power and bandwidth-scalable synchronization design for large bandwidth systems by developing reduced bandwidth modes in high-speed ADCs used in such systems. We study the impact of the proposed synchronization design on the detection probability, false alarm, AGC design and symbol timing estimation. Comparisons of our design using a bandwidth reduction of 4 with the existing IEEE 802. Had synchronization design show no loss in AWGN and a 0.8 dB loss in fading for an equivalent acquisition time and false alarm rate while providing a 33% power reduction in idle mode, assuming the ADCs consume 50% of the total idle power consumption. We also provide backward compatibility with current IEEE 802.11ad systems with limited impact on performance and power consumption.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"54 1","pages":"3418-3423"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90820853","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

SmartCar: Smart charging and driving control for electric vehicles in the smart grid SmartCar:智能电网中电动汽车的智能充电和驾驶控制

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037217

Lei Rao, Jianguo Yao

{"title":"SmartCar: Smart charging and driving control for electric vehicles in the smart grid","authors":"Lei Rao, Jianguo Yao","doi":"10.1109/GLOCOM.2014.7037217","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037217","url":null,"abstract":"Electric vehicle (EV) is the next-generation vehicle powered by electricity. Keeping EVs charged and ready to go will require a tight integration and coordination of an infrastructure of equipment connected to the power grid for vehicle charging and a new IT management system for monitoring, analyzing and controlling the vehicle charging. Smart grid technologies have brought opportunities to solve challenges in the EV ecosystem. Both academia and industry have been seeking technologies and applications to optimize an EV driver's driving cost. However, it still remains an open problem of how to handle the driving demand uncertainty and the electricity price uncertainty for EV charging. To address this challenge, we model the driving cost minimization problem and formulate it as an optimization problem. While the driver demand and the electricity price are varying with time, we leverage the Model Predictive Control (MPC) based method to design a dynamic charging (controlling when to charge and how much to charge) and driving (controlling the switching between electric driven mode and gasoline driven mode during the driving process) control scheme. Performance evaluation results demonstrate the effectiveness and cost efficiency of our approach.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"84 1","pages":"2709-2714"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90830423","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: 9

Reciprocity calibration methods for massive MIMO based on antenna coupling 基于天线耦合的大规模MIMO互易校准方法

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037384

Joao Vieira, F. Rusek, F. Tufvesson

引用次数: 79

On optimum time division multiple access for energy harvesting channels 能量收集信道的最优时分多址

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037566

Juan Liu, H. Dai, Wei Chen

{"title":"On optimum time division multiple access for energy harvesting channels","authors":"Juan Liu, H. Dai, Wei Chen","doi":"10.1109/GLOCOM.2014.7037566","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037566","url":null,"abstract":"In this paper, we consider a multiple access channel, where multiple users equipped with energy harvesting batteries communicate to an access point. The users are supposed to share the channel via Time Division Multiple Access (TDMA). In many existing works, it is commonly assumed that the users' energy harvesting processes and storage status are known to all the users before transmissions. In practice, such knowledge may not be readily available. To avoid excessive overhead for realtime information exchange, we consider the scenario where the users schedule their individual transmissions according to the users' statistical energy harvesting profiles. We first show that in the case when each node has an infinite-capacity battery, equal-power TDMA is optimal for throughput maximization. Using Markov chain modeling, we then study the system performance for the finite-capacity battery case under the equal-power TDMA framework. We also consider an equal-time TDMA scheme, which assigns equal-length subslots to each user. It is found that equal-power TDMA always outperforms equal-time TDMA in the infinite-capacity battery case, while equal-time TDMA exhibits compatible or even slightly better performance in some scenarios when the batteries have finite capacities.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"11 1","pages":"4801-4806"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90465791","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 survey of two kinds of complementary coded CDMA wireless communications 两种互补编码CDMA无线通信的综述

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036852

Siyue Sun, Shuai Han, Qiyue Yu, W. Meng, Cheng Li

引用次数: 6

Sum-rate maximization for spectrum-sharing cognitive multiple access channels without successive interference cancellation 无连续干扰抵消的频谱共享认知多址信道和速率最大化

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037274

Xin Kang, Hon-Fah Chong, Yeow-Khiang Chia, Sumei Sun

引用次数: 2

Impact of feedback delays on EESM-based wideband link adaptation: Modeling and analysis 反馈延迟对基于eesm的宽带链路自适应的影响:建模与分析

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037425

Jobin Francis, N. Mehta

{"title":"Impact of feedback delays on EESM-based wideband link adaptation: Modeling and analysis","authors":"Jobin Francis, N. Mehta","doi":"10.1109/GLOCOM.2014.7037425","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037425","url":null,"abstract":"In orthogonal frequency division multiplexing (OFDM) systems, such as long term evolution (LTE) and WiMAX, a codeword is transmitted over a group of subcarriers. Since the subcarriers see different channel gains in a frequency-selective channel, the modulation and coding scheme (MCS) of the codeword must be selected based on the vector of signal-to-noise-ratios (SNRs) of these subcarriers. Exponential effective SNR mapping (EESM) simplifies this problem by mapping the vector of SNRs into a single, equivalent flat-fading SNR. We develop a new analytical framework to characterize the throughput of EESM-based rate adaptation in such wideband channels in the presence of feedback delays, which make the choice of the MCS partially outdated by the time data transmission takes place. To this end, we first propose a novel bivariate gamma distribution to model the joint statistics of EESM at the times of estimation and data transmission. We then derive a novel expression for the throughput as a function of feedback delay. Our framework works for both correlated and independent subcarriers and for various multiple antenna diversity modes, and is accurate over a wide range of delays.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"3 1","pages":"3952-3957"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78289712","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