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2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)最新文献

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Polynomial approximations in predistortion workfunctions 预失真工作函数中的多项式逼近
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370862
T. Nielsen, S. Lindfors
{"title":"Polynomial approximations in predistortion workfunctions","authors":"T. Nielsen, S. Lindfors","doi":"10.1109/PIMRC.2004.1370862","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370862","url":null,"abstract":"Alternative approaches for approximating the ideal predistortion workfunction with a polynomial are compared. It is found that the inclusion of even order linearizing terms leads to small performance improvements but puts more stringent requirements on workfunction circuitry, increases coefficient sensitivity, and slightly degrades the adaptation speed. Hence, the choice of whether or not to include even order linearizing terms depends on whether the objective is to achieve high linearity or low implementation complexity.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121433433","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
Implementation of a QoS management mechanism to support applied algorithms on an IEEE 802.11 WLAN test-bed QoS管理机制的实现，以支持在IEEE 802.11 WLAN测试台上应用的算法
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373947
Marc Portoles-Comeras, J. Valenzuela, David Perez Diaz de Cerio
{"title":"Implementation of a QoS management mechanism to support applied algorithms on an IEEE 802.11 WLAN test-bed","authors":"Marc Portoles-Comeras, J. Valenzuela, David Perez Diaz de Cerio","doi":"10.1109/PIMRC.2004.1373947","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373947","url":null,"abstract":"Currently the development of research QoS algorithms over IEEE 802.11 based WLAN finds a difficult path into the market as access methods such as PCF or the newer EDCF and HCF methods have not been implemented in commercial products. This work presents a simple QoS management protocol, meant as a practical extension to current device drivers, which is able to operate on devices using the DCF access method. A test-bed and an algorithm are also set up to show the protocol performance and usability.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116256264","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
QoS and micromobility coupling integrated with UMTS 与UMTS集成的QoS和微移动性耦合
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373803
L. A. Sanchez, P. M. Ruiz
{"title":"QoS and micromobility coupling integrated with UMTS","authors":"L. A. Sanchez, P. M. Ruiz","doi":"10.1109/PIMRC.2004.1373803","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373803","url":null,"abstract":"QoS is one of the big challenges the Internet protocol designers are facing during the last few years. The complexity of the problem requires network overprovisioning to avoid bottlenecks. However, in wireless networks in which the spectrum is very expensive, such an approach does not seem economically viable and needs to offer QoS guarantees. In addition, the adoption of an all-IP network paradigm as the basis for the future wireless networks is putting a great demand on QoS mechanisms that can deal with the mobility of the nodes without compromising the provided QoS. We present an integration of the RSVP protocol with the HMIP micromobility protocol to improve the QoS guarantees which are given in micromobility scenarios. We demonstrate, through extensive simulations, how this approach outperforms both the TCP and UDP transport in the traditional use of RSVP for these scenarios.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116323662","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
An access-based energy efficient clustering protocol for ad hoc wireless sensor network 一种基于接入的自组织无线传感器网络节能聚类协议
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373853
X. Hong, Q. Liang
{"title":"An access-based energy efficient clustering protocol for ad hoc wireless sensor network","authors":"X. Hong, Q. Liang","doi":"10.1109/PIMRC.2004.1373853","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373853","url":null,"abstract":"The ad hoc wireless sensor network is usually deployed in severe environment with limit power supply, whose topology is dynamic and flexible. We developed an access-based energy efficient clustering protocol (ABEE), whose clustering algorithm is based on the outcome of the multiple access to the public channel. ABEE retains the advantage of access-based scheme such as self-organization, flexibility and stability. Also by considering the energy dissipation during the compression and transmission of the collected data, ABEE can provide uniformly distributed and energy efficient infrastructure for the upper lever protocols. We also propose to use coverage to judge the robustness of the network as well as the number of active nodes. Simulation is used to compare ABEE with the exclusively access-based clustering protocol in terms of rationality of the cluster structure, system lifetime and the coverage area. Our result shows that the ABEE can partition the large scale of nodes more rationally, efficaciously improve the system lifetime and the coverage of the whole network.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116468986","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: 6
Capacity analysis for a power controlled UWB indoor system 功率控制超宽带室内系统容量分析
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1370965
R. Giuliano, F. Mazzenga
{"title":"Capacity analysis for a power controlled UWB indoor system","authors":"R. Giuliano, F. Mazzenga","doi":"10.1109/PIMRC.2004.1370965","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1370965","url":null,"abstract":"Ultra wideband (UWB) is a potential key technology for the development of future short-range indoor radio communication systems providing very high bit rates services, low power consumption and location capabilities. In this paper we provide a semi-analytic approach to evaluate the system outage probability for a master-slave network based on UWB direct sequence code division multiple access scheme. The proposed approach for system analysis is quite flexible and allows us to easily include realistic path loss models, power control and multiple access interference. The technique has been validated by comparing the semi-analytic data with those from classical Monte Carlo simulation and obtaining results in very good agreement. The UWB coverage-capacity tradeoff is also investigated.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124483610","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
Joint timing and pilot symbol channel estimation for diversity receivers in Rayleigh fading channels 瑞利衰落信道中分集接收机联合定时和导频符号信道估计
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368282
P. Dmochowski, P. McLane
{"title":"Joint timing and pilot symbol channel estimation for diversity receivers in Rayleigh fading channels","authors":"P. Dmochowski, P. McLane","doi":"10.1109/PIMRC.2004.1368282","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368282","url":null,"abstract":"An effective method for joint timing and channel estimation for receive diversity systems in a frequency-flat Rayleigh fading environment is presented. We implement nonsynchronous timing recovery using Gardner's timing error detector, whose insensitivity to phase errors allows for timing recovery prior to pilot symbol based channel estimation. By employing a polyphase filter bank in the timing loop, we are able to simultaneously carry out matched filtering and data interpolation, thus eliminating the need for a separate interpolation filter. In addition, selection diversity combining is used to select the input to the timing loop, thus improving the reliability of the signal used for timing recovery. Pilot assisted channel estimation is performed on the recovered data strobes. For normalized Doppler frequency of 0.01 the system's bit error rate (BER) performance is within 1 dB from the ideal timing and channel estimation error bound, with an additional drop of 1.5 dB for a nonoptimum channel interpolator. In deep fades, the receiver timing is held fixed. We show that the receiver maintains timing lock over such fades up to a normalized timing bandwidth of 1/spl times/10/sup -4/for normalized Doppler frequency up to 0.05.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125420","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
Numerical analysis method for wireless channel of MIMO system MIMO系统无线信道的数值分析方法
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368872
Qiang Chen, K. Yamaguchi, Xiao-Peng Yang, K. Sawaya
{"title":"Numerical analysis method for wireless channel of MIMO system","authors":"Qiang Chen, K. Yamaguchi, Xiao-Peng Yang, K. Sawaya","doi":"10.1109/PIMRC.2004.1368872","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368872","url":null,"abstract":"A numerical analysis method for the wireless channel of the multiple-input multiple-output (MIMO) system is proposed. This method is a hybrid of the finite difference time domain (FDTD) method and the method of moment (MoM), and is capable of analyzing the MIMO system including the propagation channels consisting of scatterers with arbitrary location and structure, and the transmitting and receiving antennas with arbitrary geometry. Bit error rate (BER) and channel capacities of the MIMO systems are calculated and shown by changing the received SNR, the number of antenna elements, the array spacing and the scatterers located in the propagation channel.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126331616","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: 2
Comparison of multiantenna techniques for high-speed packet communication 高速分组通信中的多天线技术比较
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368297
K. Majonen, M. Heikkilä
{"title":"Comparison of multiantenna techniques for high-speed packet communication","authors":"K. Majonen, M. Heikkilä","doi":"10.1109/PIMRC.2004.1368297","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368297","url":null,"abstract":"We evaluate the use of multiantenna techniques as a way of achieving higher data rates in WCDMA downlink packet transmission. The evaluation is limited to different open loop transmit diversity techniques using two, three and four transmit antennas without any knowledge of the wireless channel at the transmitter. The achievable data rates through multiantenna techniques are evaluated as link level throughputs with a UTRA FDD downlink model for HSDPA, using a conventional RAKE receiver with one and two receiving antennas. The model includes H-ARQ, while the dynamic link adaptation is not modelled explicitly. The results show that most of the performance gain is achieved with additional receiving antenna, while the gain from transmit diversity is rather limited and in some cases even negative.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126344023","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: 2
Ad-hoc wireless network based on the UWB technology 基于超宽带技术的自组织无线网络
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1373843
Vasily U. Aristarhov, Andrei G. Gainulin, A. Kalinin, V. Krylov, R. A. Levchenko, A. Pluzhnikov, Victor I. Shkunov
{"title":"Ad-hoc wireless network based on the UWB technology","authors":"Vasily U. Aristarhov, Andrei G. Gainulin, A. Kalinin, V. Krylov, R. A. Levchenko, A. Pluzhnikov, Victor I. Shkunov","doi":"10.1109/PIMRC.2004.1373843","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1373843","url":null,"abstract":"We investigate the structure and algorithms of high-speed self-organized (ad hoc) circuit switching wireless network based on UWB technology. The specified network is PAN oriented (personal area network) and can be used for cable replacement purposes. In the article we present the architecture of such a network, base routing and self-organization algorithms, specify the requirements for the physical layer (and suggest the solution for such a network) and discuss some questions concerning the modeling of such class of networks military services.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126506496","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
Blind source separation for multiuser detection in MIMO MC-CDMA systems MIMO MC-CDMA系统中多用户检测的盲源分离
2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754) Pub Date : 2004-09-05 DOI: 10.1109/PIMRC.2004.1368855
D. Iglesia, A. Dapena, C. Escudero
{"title":"Blind source separation for multiuser detection in MIMO MC-CDMA systems","authors":"D. Iglesia, A. Dapena, C. Escudero","doi":"10.1109/PIMRC.2004.1368855","DOIUrl":"https://doi.org/10.1109/PIMRC.2004.1368855","url":null,"abstract":"We introduce a new FD-BSS technique for multiuser detection in MC-CDMA systems when multiple antennas are used in transmission and reception. In these systems, several users transmit simultaneously from each antenna using the whole bandwidth available. The convolutive effect introduced by dispersive channels is transformed into instantaneous mixtures of the user signals, since we are considering a multicarrier technique. Using this result, we propose a new blind source separation method to recover the transmitted information. This technique does not require knowledge of the channel impulse or training sequences.","PeriodicalId":201962,"journal":{"name":"2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125484490","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
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