2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications最新文献_第5页

Power control of transmit diversity and beamforming under correlated fading 相关衰落下发射分集和波束形成的功率控制

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450013

Chen Sun, Y. Alemseged, H. Tran, H. Harada

引用次数: 0

An Inter-MAC architecture for heterogeneous gigabit home networks 异构千兆家庭网络的Inter-MAC架构

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5449931

T. Meyer, P. Langendörfer, Michael Bahr, V. Suraci, S. Nowak, R. Jennen

{"title":"An Inter-MAC architecture for heterogeneous gigabit home networks","authors":"T. Meyer, P. Langendörfer, Michael Bahr, V. Suraci, S. Nowak, R. Jennen","doi":"10.1109/PIMRC.2009.5449931","DOIUrl":"https://doi.org/10.1109/PIMRC.2009.5449931","url":null,"abstract":"The home network of the near future will be a heterogeneous broadband network supporting the use of wired as well as wireless transmission technologies. The variety of services will range from HDTV via gaming to emergency services in the telemedicine area. In this paper, we introduce a technology-independent protocol layer called Inter-MAC which provides a common infrastructure to all home networking devices. The Inter-MAC can establish a connection via different transmission technologies while ensuring appropriate QoS. Key to this is the capability to correctly interpret technology-dependent PHY and MAC parameters for determining QoS when selecting initial and alternative paths, as well as the feature of admission control. Our simulations indicate clearly that the Inter-MAC approach can cope with varying loads, for instance, the time the jitter needed to stabilize was as short as 4 s. The reduced QoS was not noticeable by the user since the jitter introduced by handling additional HDTV flows was less than 0.2 ms for the existing and less than 0.7 ms for the new flow.","PeriodicalId":110448,"journal":{"name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121137816","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: 27

Time-variant BAN channel characterization 时变BAN信道特性

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5449948

R. D’Errico, L. Ouvry

引用次数: 79

Coordination across base stations for effective control of space division multiple access enhanced IEEE 802.16m systems 跨基站协调，有效控制空分多址增强的IEEE 802.16m系统

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450054

B. Wolz, Francisco Niño, M. Mühleisen, K. Klagges

{"title":"Coordination across base stations for effective control of space division multiple access enhanced IEEE 802.16m systems","authors":"B. Wolz, Francisco Niño, M. Mühleisen, K. Klagges","doi":"10.1109/PIMRC.2009.5450054","DOIUrl":"https://doi.org/10.1109/PIMRC.2009.5450054","url":null,"abstract":"In recent years, smart antenna technologies are of ever-increasing interest to boost the capacity of existing and future wireless systems. Several standards support these techniques such as the wireless metropolitan area network IEEE 802.16 (WiMAX) and IMT-Advanced candidates. In applying smart antenna beamforming and Space Division Multiple Access (SDMA) techniques, adaptive antennas are able to increase cell capacity by reducing inter-cell interference and by allowing concurrent transmissions. As a downside, an SDMA enabled cell generates less predictable interference than a conventional cell, because a changing number of mobile stations (MS) are sending uplink data in parallel and downlink streams with changing direction are transmitted by the base station (BS). Thereby the SINR estimation becomes less precise and the link adaptation sub optimal. This work investigates the potential of coordination across BSs on MAC layer for further mitigation of inter-cell interference and increasing precision of SINR estimations in an SDMA enhanced system. The developed concepts are evaluated in a cellular deployment by means of system-level simulations for up-and downlink. The performance of a coordinated system is compared with a non-coordinated reference case.","PeriodicalId":110448,"journal":{"name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124939446","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 fair MaxSNR scheduling scheme for multiuser OFDM wireless systems 多用户OFDM无线系统的公平最大信噪比调度方案

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450320

C. Gueguen, Sébastien Baey

引用次数: 5

Mismatched source transition probability matrix for adaptive MAP decoding in MPEG-4 imagery wireless transmission systems MPEG-4图像无线传输系统中自适应MAP解码的不匹配源转移概率矩阵

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450029

S. Mahapakulchai, C. Charoenlarpnopparut, Siriwat Hasajitto

引用次数: 0

Distributed space-time decoding with Two-Pilot channel estimation for wireless relay networks 无线中继网络双导信道估计的分布式空时译码

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450328

Chao Zhang, Jun Zhang, Weidong Wang, Guo Wei

引用次数: 3

IEEE 802.11b-based access scheme with coordinated sleeping for wireless sensor networks 基于IEEE 802.11b的无线传感器网络协调睡眠接入方案

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5449859

Liang Ma, Tianyi Xing, Xiaoli Wang, Junde Song

{"title":"IEEE 802.11b-based access scheme with coordinated sleeping for wireless sensor networks","authors":"Liang Ma, Tianyi Xing, Xiaoli Wang, Junde Song","doi":"10.1109/PIMRC.2009.5449859","DOIUrl":"https://doi.org/10.1109/PIMRC.2009.5449859","url":null,"abstract":"This paper proposes a reliable access scheme in the Medium Access Control (MAC) layer of Wireless Sensor Networks (WSN) called Explicit Reservation with Coordinated Sleeping (ERCS). Nowadays, most access mechanisms proposed for WSN are costly and difficult to build an entire network. However, the research of ERCS is significant since it is the one based on the widely used IEEE 802.11b which is already a mature technology in wireless communications. Thus ERCS can facilitate implementations in the practical applications, which is a brand new resolution for WSN. The strategies of ERCS mainly include explicit reservation and coordinated sleeping. First, the Explicit Reservation executed by the sink node can guarantee the fast and reliable accessing of the reserved sensor nodes. Second, through Coordinated Sleeping, sensor nodes which do not occupy the wireless channel or do not have data to send can go to the sleeping mode to save energy after the coordination with the sink node. In the end, based on the analysis of the novel Markov chain model and OPNET simulations with various network scales under large open NLOS condition, it is substantiated that the ERCS can obtain favorable performances in terms of low energy consumption, good scalability and high throughput.","PeriodicalId":110448,"journal":{"name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123435348","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

Frame-aggregated link adaptation algorithm for IEEE 802.11n networks IEEE 802.11n网络的帧聚合链路自适应算法

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450094

Kai-Ten Feng, Pochun Lin

{"title":"Frame-aggregated link adaptation algorithm for IEEE 802.11n networks","authors":"Kai-Ten Feng, Pochun Lin","doi":"10.1109/PIMRC.2009.5450094","DOIUrl":"https://doi.org/10.1109/PIMRC.2009.5450094","url":null,"abstract":"Channel condition is considered an important issue that affects the performance in wireless networks. Link Adaptation techniques have been proposed to improve the degraded network performance by adjusting the design parameters, e.g. the modulation and coding schemes, in order to adopt the dynamically changing channel conditions. Furthermore, due to the advancement of the IEEE 802.11n standard, the network goodput can be enhanced with the exploitation of its frame aggregation schemes. However, none of the existing link adaption algorithm is designed to consider the feasible aggregated frame length that should be adapted according to the changing environments. In this paper, A frame-aggregated link adaptation (FALA) algorithm is proposed to dynamically adjust system parameters in order to improve the network goodput under varying channel conditions. For the purpose of maximizing the network goodput, both the optimal frame payload size and the modulation and coding schemes are jointly acquired according to the signal-to-noise ratio under specific channel condition. Numerical results illustrate that the proposed FALA protocol can effectively increase the goodput performance comparing with other existing link adaptation schemes, especially under dynamically changing environments.","PeriodicalId":110448,"journal":{"name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123565546","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: 11

Link quality-based transmission power adaptation for energy saving in IEEE 802.11 IEEE 802.11中基于链路质量的传输功率自适应节能

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2009-09-01 DOI: 10.1109/PIMRC.2009.5450167

Jinglong Zhou, Xin Zhang, M. Jacobsson, I. Niemegeers

{"title":"Link quality-based transmission power adaptation for energy saving in IEEE 802.11","authors":"Jinglong Zhou, Xin Zhang, M. Jacobsson, I. Niemegeers","doi":"10.1109/PIMRC.2009.5450167","DOIUrl":"https://doi.org/10.1109/PIMRC.2009.5450167","url":null,"abstract":"Today, many wireless devices are mobile and battery powered, which means that the service duration is highly dependent on energy consumptions and battery capacities. Based on the fact that battery capacity is still limited, energy saving is an important issue in wireless communication. Many methods have been proposed to save energy in wireless communication, such as power-aware routing and sleep mode. However, another important approach, transmission power adaptation, is not yet well discussed. In this paper, we propose a mechanism that selects the appropriate transmission power level to transmit packets instead of using a fixed default power level for all packets, which is common in IEEE 802.11. Lower transmission power levels may result in more retransmissions, but still consumes less energy. In total, energy can be saved and interference can be reduced by selecting a good transmission power level. We propose a two phase power saving mechanism and implemented it in a real test-bed. To evaluate the performance of our mechanism, we used an indoor environment to carry out measurements. The measurement results indicate that a significant amount of energy can be saved for the transmitter in most scenarios compared to using a fixed transmission power level for all packets.","PeriodicalId":110448,"journal":{"name":"2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126751824","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