Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649274
Yang Song, B. Ciubotaru, Gabriel-Miro Muntean
This paper introduces a novel quality-oriented cross-layer energy-efficient data communication solution (Q-PASTE) for mobile devices, with two components at different network layers. First component, the Packet/ApplicaTion manager (PAT) is deployed at the application layer of both service gateway and client host. The gateway level PAT shapes traffic into bursts to reduce the wireless transceiver's duty cycle. The client-side PAT monitors each active session and informs the Medium Access Control (MAC) layer about their traffic-related behavior. The second component, the Slow sTart Exponential and Linear Algorithm (STELA), deployed at MAC layer, adaptively adjusts the sleep/wake-up behavior of mobile device wireless interfaces in order to reduce energy consumption while also maintaining high Quality of Service (QoS) levels. Both mathematical analysis and simulation-based modeling and testing have been performed to evaluate Q-PASTE performance. Comparative results have shown significant energy saving achieved when using Q-PASTE, without compromising content delivery performance.
{"title":"Q-PASTE: A cross-layer power saving solution for wireless data transmission","authors":"Yang Song, B. Ciubotaru, Gabriel-Miro Muntean","doi":"10.1109/ICCW.2013.6649274","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649274","url":null,"abstract":"This paper introduces a novel quality-oriented cross-layer energy-efficient data communication solution (Q-PASTE) for mobile devices, with two components at different network layers. First component, the Packet/ApplicaTion manager (PAT) is deployed at the application layer of both service gateway and client host. The gateway level PAT shapes traffic into bursts to reduce the wireless transceiver's duty cycle. The client-side PAT monitors each active session and informs the Medium Access Control (MAC) layer about their traffic-related behavior. The second component, the Slow sTart Exponential and Linear Algorithm (STELA), deployed at MAC layer, adaptively adjusts the sleep/wake-up behavior of mobile device wireless interfaces in order to reduce energy consumption while also maintaining high Quality of Service (QoS) levels. Both mathematical analysis and simulation-based modeling and testing have been performed to evaluate Q-PASTE performance. Comparative results have shown significant energy saving achieved when using Q-PASTE, without compromising content delivery performance.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133960730","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649407
Krystian Safjan, Stanislaw Strzyz, K. Pedersen, Jens Steiner, C. Rosa
Open Loop Power Control is an important technique providing adaptation of user transmit power. There are multiple factors like cell size, interference conditions, etc. that determine the optimal settings of power control (PC) parameters. In this paper, the impact of open loop PC parameter settings on the performance of LTE uplink (UL) in a co-channel heterogeneous network (HetNet) scenario with macro- and pico-cells is presented. Further, we study the difference in optimal PC settings for various network deployment scenarios and cell range extension (CRE) offsets in order to determine sensitivity of those parameter settings. It is found that optimal PC parameters for one case can serve as good parameters for other network configurations as well. The conclusions are supported by results of system-level simulations.
{"title":"Open Loop Power Control parameter settings impact on LTE HetNet uplink performance","authors":"Krystian Safjan, Stanislaw Strzyz, K. Pedersen, Jens Steiner, C. Rosa","doi":"10.1109/ICCW.2013.6649407","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649407","url":null,"abstract":"Open Loop Power Control is an important technique providing adaptation of user transmit power. There are multiple factors like cell size, interference conditions, etc. that determine the optimal settings of power control (PC) parameters. In this paper, the impact of open loop PC parameter settings on the performance of LTE uplink (UL) in a co-channel heterogeneous network (HetNet) scenario with macro- and pico-cells is presented. Further, we study the difference in optimal PC settings for various network deployment scenarios and cell range extension (CRE) offsets in order to determine sensitivity of those parameter settings. It is found that optimal PC parameters for one case can serve as good parameters for other network configurations as well. The conclusions are supported by results of system-level simulations.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"52 38","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113936487","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649397
G. Koudouridis, Christer Qvarfordt
The inter-cell interference problem is a key challenge for the planning of OFDMA-based cellular networks. This paper shows the possible gains that can be obtained by employing a static Inter-Cell Interference Coordination (ICIC) scheme in the downlink. A simplified simulation-based capacity analysis study is performed investigating the correlation between system capacity and the distributions of power limited frequency bands among the cells. The size of the ICIC area and the power level in the power limited frequency bands have been two of the key configuration parameters that have been studied. Overall, static ICIC mechanisms are effective in scenarios where the user distribution spatially across the network is uniform. To exploit the full potential of coordination we have investigated the system capacity gains taking the non-uniform user distribution into account. With appropriate configuration of power level settings and proper bandwidth allocation to the spatially clustered users, it was shown that there is a great potential for further capacity improvements.
{"title":"Exploration of capacity gains by inter-cell interference coordination based on user distribution","authors":"G. Koudouridis, Christer Qvarfordt","doi":"10.1109/ICCW.2013.6649397","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649397","url":null,"abstract":"The inter-cell interference problem is a key challenge for the planning of OFDMA-based cellular networks. This paper shows the possible gains that can be obtained by employing a static Inter-Cell Interference Coordination (ICIC) scheme in the downlink. A simplified simulation-based capacity analysis study is performed investigating the correlation between system capacity and the distributions of power limited frequency bands among the cells. The size of the ICIC area and the power level in the power limited frequency bands have been two of the key configuration parameters that have been studied. Overall, static ICIC mechanisms are effective in scenarios where the user distribution spatially across the network is uniform. To exploit the full potential of coordination we have investigated the system capacity gains taking the non-uniform user distribution into account. With appropriate configuration of power level settings and proper bandwidth allocation to the spatially clustered users, it was shown that there is a great potential for further capacity improvements.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123028594","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649270
E. Katranaras, M. Imran, M. Dianati
This paper investigates the energy-aware clustering of cooperating base stations in the downlink of cellular networks. The focus of this work is on static clustering deployments for LTE systems when joint signal precoding is employed at multiple base stations. We demonstrate that properly planned clustering can provide the desired balance between network spectral and energy efficiency. To this end, we compare the overall energy consumption of various clustered cooperation layouts while considering different target performance metrics at user end. Our evaluations for various inter-site distance deployments in a practical macrocell scenario unveil the individual parameters controlling the energy effectiveness of a clustering strategy. In fact, it is shown that the choice of the optimum clustering layout depends on: 1) the specific service demands; 2) the deployment density of the network and; 3) on the ability of the base stations to jointly adjust their transmit power. Ultimately, we provide a general framework for choosing the most appropriate cooperation set of base stations in energy-aware networks.
{"title":"Energy-aware clustering for multi-cell joint transmission in LTE networks","authors":"E. Katranaras, M. Imran, M. Dianati","doi":"10.1109/ICCW.2013.6649270","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649270","url":null,"abstract":"This paper investigates the energy-aware clustering of cooperating base stations in the downlink of cellular networks. The focus of this work is on static clustering deployments for LTE systems when joint signal precoding is employed at multiple base stations. We demonstrate that properly planned clustering can provide the desired balance between network spectral and energy efficiency. To this end, we compare the overall energy consumption of various clustered cooperation layouts while considering different target performance metrics at user end. Our evaluations for various inter-site distance deployments in a practical macrocell scenario unveil the individual parameters controlling the energy effectiveness of a clustering strategy. In fact, it is shown that the choice of the optimum clustering layout depends on: 1) the specific service demands; 2) the deployment density of the network and; 3) on the ability of the base stations to jointly adjust their transmit power. Ultimately, we provide a general framework for choosing the most appropriate cooperation set of base stations in energy-aware networks.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121049481","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649220
S. Papaharalabos, G. Alexandropoulos, C. Papadias
It was recently theoretically shown that the sum capacity of the K-user interference channel scales linearly with a factor of K/2 in the high signal-to-noise ratio (SNR) regime. This scaling can be accomplished with interference alignment (IA), which is a transmission technique that requires perfect global channel state information to be available at all transceivers. For the general case of K > 3 users, a number of different iterative algorithms for achieving the IA sum-rate scaling at high SNRs has been lately proposed. These algorithms compute transmit and receive filters aiming at optimizing a certain performance objective, thus ranging in sum-rate performance vs. complexity tradeoffs. However, most of the performance evaluation studies to date do not include error correction coding, thus taking away from our ability to quantify the true sum-rate potential of the various aforementioned algorithms in practice. In this paper, we perform a comparative study of several IA schemes in the spatial dimension when combined with an error correction coding scheme. Our results shed light into how IA would perform in LTE-compliant systems.
{"title":"A comparative study of interference alignment schemes with LTE-compliant turbo coding","authors":"S. Papaharalabos, G. Alexandropoulos, C. Papadias","doi":"10.1109/ICCW.2013.6649220","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649220","url":null,"abstract":"It was recently theoretically shown that the sum capacity of the K-user interference channel scales linearly with a factor of K/2 in the high signal-to-noise ratio (SNR) regime. This scaling can be accomplished with interference alignment (IA), which is a transmission technique that requires perfect global channel state information to be available at all transceivers. For the general case of K > 3 users, a number of different iterative algorithms for achieving the IA sum-rate scaling at high SNRs has been lately proposed. These algorithms compute transmit and receive filters aiming at optimizing a certain performance objective, thus ranging in sum-rate performance vs. complexity tradeoffs. However, most of the performance evaluation studies to date do not include error correction coding, thus taking away from our ability to quantify the true sum-rate potential of the various aforementioned algorithms in practice. In this paper, we perform a comparative study of several IA schemes in the spatial dimension when combined with an error correction coding scheme. Our results shed light into how IA would perform in LTE-compliant systems.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116862696","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649428
P. Marques, Jonathan Rodriguez, S. Delaere, Philippe Delahaye, Benoit Lecroart, M. Gundlach, D. Triantafyllopoulou, K. Moessner, D. Noguet
This paper addresses the current regulatory framework, main research activities and standardization efforts towards a shared use of radio spectrum in the European Union. A survey of emerging spectrum sharing applications and associated standardization paths is described. Remaining challenges for an effective participation of research projects in Cognitive Radio standards are discussed. A new coordination action funded by the European Commission that aims to boost standardization impact of research projects working on cognitive radio and spectrum sharing aspects is presented.
{"title":"Shared use of radio spectrum in the EU: From research projects to standards","authors":"P. Marques, Jonathan Rodriguez, S. Delaere, Philippe Delahaye, Benoit Lecroart, M. Gundlach, D. Triantafyllopoulou, K. Moessner, D. Noguet","doi":"10.1109/ICCW.2013.6649428","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649428","url":null,"abstract":"This paper addresses the current regulatory framework, main research activities and standardization efforts towards a shared use of radio spectrum in the European Union. A survey of emerging spectrum sharing applications and associated standardization paths is described. Remaining challenges for an effective participation of research projects in Cognitive Radio standards are discussed. A new coordination action funded by the European Commission that aims to boost standardization impact of research projects working on cognitive radio and spectrum sharing aspects is presented.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115408495","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649300
S. Abdulhadi, M. Naeem, M. Jaseemuddin, A. Anpalagan
Energy consumption is a key issue in wireless ad hoc and sensor networks. Cooperative communication represents a potential candidate to improve the energy efficiency of wireless networks and this efficiency can be further improved by considering the variable packet size. In this paper, we address the question of the optimal packet size for data that improves the efficiency of energy consumption in energy constrained wireless cooperative ad hoc networks. Energy efficiency is used as an optimization metric and the problem is formulated as a nonlinear optimization problem. The accurate solution of optimal problems is crucial and existing methods proposed for such formulation can still converge to a local solution. In this paper, a novel global optimization approach based on a branch and bound (BB) framework and convexification techniques that address the solution to global optimality known as αBB is introduced. The numerical results show that, this algorithm offers mathematical guarantees for convergence to a point arbitrarily close to the global minimum in reasonable computational time.
{"title":"Optimized packet size for energy efficient cooperative wireless ad-hoc networks","authors":"S. Abdulhadi, M. Naeem, M. Jaseemuddin, A. Anpalagan","doi":"10.1109/ICCW.2013.6649300","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649300","url":null,"abstract":"Energy consumption is a key issue in wireless ad hoc and sensor networks. Cooperative communication represents a potential candidate to improve the energy efficiency of wireless networks and this efficiency can be further improved by considering the variable packet size. In this paper, we address the question of the optimal packet size for data that improves the efficiency of energy consumption in energy constrained wireless cooperative ad hoc networks. Energy efficiency is used as an optimization metric and the problem is formulated as a nonlinear optimization problem. The accurate solution of optimal problems is crucial and existing methods proposed for such formulation can still converge to a local solution. In this paper, a novel global optimization approach based on a branch and bound (BB) framework and convexification techniques that address the solution to global optimality known as αBB is introduced. The numerical results show that, this algorithm offers mathematical guarantees for convergence to a point arbitrarily close to the global minimum in reasonable computational time.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127225910","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649308
Bruno Feitor, P. Assunção, Joao R. S. Soares, L. Cruz, R. Marinheiro
This paper proposes an objective model to predict the quality of lost frames in 3D video streams. The model is based only on header information from three different packet-layer levels: Network Abstraction Layer (NAL), Packetised Elementary Streams (PES) and Transport Stream (TS). Transmission errors leading to undecodable TS packets are assumed to result in frame loss. The proposed method estimates the size of the lost frames, which is used as a model parameter to predict their objective quality measured as the Structural Similarity Index Metric (SSIM). The results show that SSIM of missing stereoscopic frames in 3D coded video can be predicted with Root Mean Square Error (RMSE) accuracy of about 0.1 and Pearson correlation coefficient of 0.8, taking the SSIM of uncorrupted frames as reference. It is concluded that the proposed model is capable of estimating the SSIM quite accurately using only the lost frames estimated sizes.
{"title":"Objective quality prediction model for lost frames in 3D video over TS","authors":"Bruno Feitor, P. Assunção, Joao R. S. Soares, L. Cruz, R. Marinheiro","doi":"10.1109/ICCW.2013.6649308","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649308","url":null,"abstract":"This paper proposes an objective model to predict the quality of lost frames in 3D video streams. The model is based only on header information from three different packet-layer levels: Network Abstraction Layer (NAL), Packetised Elementary Streams (PES) and Transport Stream (TS). Transmission errors leading to undecodable TS packets are assumed to result in frame loss. The proposed method estimates the size of the lost frames, which is used as a model parameter to predict their objective quality measured as the Structural Similarity Index Metric (SSIM). The results show that SSIM of missing stereoscopic frames in 3D coded video can be predicted with Root Mean Square Error (RMSE) accuracy of about 0.1 and Pearson correlation coefficient of 0.8, taking the SSIM of uncorrupted frames as reference. It is concluded that the proposed model is capable of estimating the SSIM quite accurately using only the lost frames estimated sizes.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125411526","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649320
Yitong Liu, Shen Yun, Yinian Mao, Liu Jing, Lin Qi, Dacheng Yang
This paper proposes a Quality of Experience (QoE) test methodology for adaptive streaming service. We analyze the factors influencing the QoE of adaptive streaming, and evaluate the QoE of the end-to-end service. Our research gives the evidence that adaptive streaming improves end-users' subjective perception greatly compared with fixed-rate streaming in terms of QoE. Two groups of experiments are conducted, one assesses artificially spliced video samples in variable bitrates, and another evaluates Dynamic Adaptive Streaming over HTTP (DASH) [1] [2] video samples under real network traces. The former experiment focuses on the influence from the bitrate distribution without considering the fluency. And the latter pays more attention to the influence of the fluency on QoE performance. Through a large number of subjective assessments, the QoE results are obtained to illustrate various impact factors on adaptive streaming, such as fluency, bitrate distribution, startup bitrate level, bitrate switching frequency, etc. The results of this study can be used to facilitate the research on mathematical modeling of user subjective experience and the algorithm development for adaptive streaming.
提出了一种自适应流媒体服务的体验质量(QoE)测试方法。分析了影响自适应流QoE的因素，并对端到端服务的QoE进行了评价。我们的研究证明，自适应流媒体在QoE方面比固定速率流媒体大大提高了终端用户的主观感知。我们进行了两组实验，一组对可变比特率下人工拼接的视频样本进行评估，另一组对真实网络轨迹下的动态自适应流(Dynamic Adaptive Streaming over HTTP, DASH)[1][2]视频样本进行评估。前一种实验主要关注比特率分布的影响，而不考虑流畅性。后者更关注流利度对QoE绩效的影响。通过大量的主观评价，得到了QoE结果，说明了影响自适应流的各种因素，如流畅性、比特率分布、启动比特率水平、比特率切换频率等。本研究结果可为用户主观体验的数学建模研究和自适应流的算法开发提供参考。
{"title":"A study on Quality of Experience for adaptive streaming service","authors":"Yitong Liu, Shen Yun, Yinian Mao, Liu Jing, Lin Qi, Dacheng Yang","doi":"10.1109/ICCW.2013.6649320","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649320","url":null,"abstract":"This paper proposes a Quality of Experience (QoE) test methodology for adaptive streaming service. We analyze the factors influencing the QoE of adaptive streaming, and evaluate the QoE of the end-to-end service. Our research gives the evidence that adaptive streaming improves end-users' subjective perception greatly compared with fixed-rate streaming in terms of QoE. Two groups of experiments are conducted, one assesses artificially spliced video samples in variable bitrates, and another evaluates Dynamic Adaptive Streaming over HTTP (DASH) [1] [2] video samples under real network traces. The former experiment focuses on the influence from the bitrate distribution without considering the fluency. And the latter pays more attention to the influence of the fluency on QoE performance. Through a large number of subjective assessments, the QoE results are obtained to illustrate various impact factors on adaptive streaming, such as fluency, bitrate distribution, startup bitrate level, bitrate switching frequency, etc. The results of this study can be used to facilitate the research on mathematical modeling of user subjective experience and the algorithm development for adaptive streaming.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"20 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121016594","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}
Pub Date : 2013-06-09DOI: 10.1109/ICCW.2013.6649217
M. Simko, P. Diniz, M. Rupp
Adaptive pilot patterns offer high throughput gains. However, their application requires additional feedback. In this paper, we investigate the feedback requirements for adaptive pilot patterns applied in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing systems. The main goal is to support a wide range of Doppler spreads and Root Mean Square (RMS) delay spreads while keeping the number of allowed pilot patterns at a minimum. Based on our simulation results, we show that only four bits of additional wide-band feedback per user are required in order to optimally support RMS delay spreads up to 800 ns and Doppler frequencies up to 1200 Hz.
{"title":"Design requirements of adaptive pilot-symbol patterns","authors":"M. Simko, P. Diniz, M. Rupp","doi":"10.1109/ICCW.2013.6649217","DOIUrl":"https://doi.org/10.1109/ICCW.2013.6649217","url":null,"abstract":"Adaptive pilot patterns offer high throughput gains. However, their application requires additional feedback. In this paper, we investigate the feedback requirements for adaptive pilot patterns applied in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing systems. The main goal is to support a wide range of Doppler spreads and Root Mean Square (RMS) delay spreads while keeping the number of allowed pilot patterns at a minimum. Based on our simulation results, we show that only four bits of additional wide-band feedback per user are required in order to optimally support RMS delay spreads up to 800 ns and Doppler frequencies up to 1200 Hz.","PeriodicalId":252497,"journal":{"name":"2013 IEEE International Conference on Communications Workshops (ICC)","volume":"288 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127721310","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}
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