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11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)最新文献

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Optimal access point placement in simultaneous broadcast system using OFDM for indoor wireless LAN 基于OFDM的室内无线局域网同步广播系统中接入点的优化配置
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881418
M. Kobayashi, S. Haruyama, R. Kohno, M. Nakagawa
{"title":"Optimal access point placement in simultaneous broadcast system using OFDM for indoor wireless LAN","authors":"M. Kobayashi, S. Haruyama, R. Kohno, M. Nakagawa","doi":"10.1109/PIMRC.2000.881418","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881418","url":null,"abstract":"This paper investigates the optimal access point placement in a simultaneous broadcast system using orthogonal frequency division multiplexing (OFDM) for high data rate indoor wireless LAN. We aim to determine the best combination of multiple AP placements that minimizes the average bit error rate (BER) of terminals when input information including an indoor configuration, a number of APs, and total transmission power is given a priori. Since this AP placement problem is categorized as a hard combinatorial problem with many variables and constraints, we applied a nonlinear optimization scheme called very fast simulated annealing to search for an approximate optimal solution. The simulation results demonstrate that the algorithm has been successfully applied to the AP placement problem and its effectiveness was also confirmed in comparison with a local search algorithm.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130671478","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: 38
Transmitting array antenna beamforming based on linear goal programming for forward link of DS-CDMA DS-CDMA前向链路中基于线性目标规划的发射阵列天线波束形成
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881450
Tsuguhide Aoki, I. Yoshii, N. Hirano, R. Kohno
{"title":"Transmitting array antenna beamforming based on linear goal programming for forward link of DS-CDMA","authors":"Tsuguhide Aoki, I. Yoshii, N. Hirano, R. Kohno","doi":"10.1109/PIMRC.2000.881450","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881450","url":null,"abstract":"This paper investigates improvement of the radiation pattern design of the transmitting array antenna beamforming and transmission power control (TPC) for the forward link of DS-CDMA/FDD system. Optimum transmission beamforming and power can be derived with the information of the propagation channel of the forward link in order to improve user capacity. It is assumed that a channel is static, all mobile stations (MSs) report measured channel characteristics to a base station (BS) and that controls received SIRs of all MSs by using this information. Then, the optimum control of transmitting beam pattern based on linear goal programming is proposed to improve user capacity.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123870683","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
Optimum band allocation according to subband condition for BST-OFDM 基于子带条件的BST-OFDM最优频带分配
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881616
M. Motegi, R. Kohno
{"title":"Optimum band allocation according to subband condition for BST-OFDM","authors":"M. Motegi, R. Kohno","doi":"10.1109/PIMRC.2000.881616","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881616","url":null,"abstract":"This paper proposes and investigates optimum band allocation scheme and modulation assignment for band-segmented transmission OFDM (BST-OFDM) according to different environment characteristics of each segmented band or subband channel. The proposed system can adaptively optimize the allocation of subbands according to a conditional parameter, that is, the CNR under independently fading subband channels. The optimization criterion is the minimum total BER performance under the constraint conditions that are the total bandwidth, the number of subbands and the constant total information bit rate. The subband condition is updated by the feedback information from the receiver. The proposed adaptive band allocation BST-OFDM system can overperform the conventional BST-OFDM system in which subbands are divided with equal bandwidth.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130835493","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
Wireless optical transmissions with white colored LED for wireless home links 无线光传输与白色LED无线家庭链路
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881634
Yuichi Tanaka, S. Haruyama, M. Nakagawa
{"title":"Wireless optical transmissions with white colored LED for wireless home links","authors":"Yuichi Tanaka, S. Haruyama, M. Nakagawa","doi":"10.1109/PIMRC.2000.881634","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881634","url":null,"abstract":"We propose a wireless optical communication system with white colored LEDs for a wireless home link (WHL). The white colored LEDs have a high power output and are regarded as lamps for the next generation. In the proposed system, this device is used for a wireless home link. The proposed system is suitable for private networks such as consumer communication networks. From numerical and simulation results, it is confirmed that the proposed system is available and the problems to be solved are made clear.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115362036","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: 239
Smart antenna for IEEE 802.11 wireless LAN II with near field distortion compensation 具有近场失真补偿的IEEE 802.11无线局域网II智能天线
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881659
G. Abreu, R. Kohno
{"title":"Smart antenna for IEEE 802.11 wireless LAN II with near field distortion compensation","authors":"G. Abreu, R. Kohno","doi":"10.1109/PIMRC.2000.881659","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881659","url":null,"abstract":"Smart antenna technology has proved to be a valuable add-in feature for communication systems. However, its application indoors, in particular to the unlicensed 2.4-GHz industrial, scientific and medical (ISM) band has not been accomplished yet, mainly due to the problem of near-field distortion that upsurges from the indoor channel characteristics at the mentioned band. We evaluate the compensation scheme to eliminate such near field distortion presented by Abren and Kohno (see Proc. of the ICT2000, vol.2, p.900-906, 2000) under the IEEE 802.11 standard's specifications.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122516312","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
Blind adaptive estimation of modulation scheme for software defined radio 软件无线电调制方案的盲自适应估计
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-12-01 DOI: 10.1109/PIMRC.2000.881388
K. Umebayashi, S. Ishii, R. Kohno
{"title":"Blind adaptive estimation of modulation scheme for software defined radio","authors":"K. Umebayashi, S. Ishii, R. Kohno","doi":"10.1109/PIMRC.2000.881388","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881388","url":null,"abstract":"A software defined radio (SDR) system is used to reconfigure all or many specifications such as modulation scheme, demodulation, coding etc. Therefore, supplementary information allow recognition of these specifications by the receiver is required. Since much redundant supplementary information reduces efficiency in transmission, we have aimed to carry out blind adaptive demodulation which, can adaptively demodulate without supplementary information. This paper proposes and investigates both a blind adaptive algorithm for estimating channel and that for estimating a modulation scheme. Computer simulation evaluates the proposed blind estimation algorithm.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122985096","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: 16
Design of space-time codes with optimal coding gain 具有最佳编码增益的空时码设计
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-10-20 DOI: 10.1109/PIMRC.2000.881473
K. K. Mukkavilli, Michael D. Ionescu, B. Aazhang
{"title":"Design of space-time codes with optimal coding gain","authors":"K. K. Mukkavilli, Michael D. Ionescu, B. Aazhang","doi":"10.1109/PIMRC.2000.881473","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881473","url":null,"abstract":"Space time codes have been proposed in the literature as an efficient means for improving the data rates over fading channels with multiple transmit antennas. In particular, the rank and the determinant of code difference matrices have been shown to be important in the design of space time codes for fading channels. In the present work, we investigate the problem of maximizing the coding gain of space-time codes, given by the minimum of the determinants of all the code difference matrices. We rely on equality of the singular values of the code difference matrices as a necessary and sufficient condition for obtaining the optimal coding gain. Finally, we discuss the construction of trellis codes and present simulation results.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126085530","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: 8
Blind adaptive detection for asynchronous CDMA systems 异步CDMA系统的盲自适应检测
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881455
K. Wong, T. O’Farrell
{"title":"Blind adaptive detection for asynchronous CDMA systems","authors":"K. Wong, T. O’Farrell","doi":"10.1109/PIMRC.2000.881455","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881455","url":null,"abstract":"The application and performance of a blind adaptive algorithm in a DS-CDMA communication system is considered. The proposed blind algorithm is a stochastic gradient-based algorithm derived from the standard least mean square (LMS) adaptation algorithm. The algorithm is blind in the sense that information of other users such as the timing, channel information and not required. We demonstrate the convergence of the blind algorithm in the mean square error (MSE) sense and derive its steady state MSE. The bit error rate (BER) and MSE performance of the proposed blind algorithm in an asynchronous system are presented.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114999038","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
Virtual bus architecture for hierarchical cellular systems 分层蜂窝系统的虚拟总线体系结构
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881545
G. L. Bodic, D. Girma, J. Irvine, J. Dunlop
{"title":"Virtual bus architecture for hierarchical cellular systems","authors":"G. L. Bodic, D. Girma, J. Irvine, J. Dunlop","doi":"10.1109/PIMRC.2000.881545","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881545","url":null,"abstract":"A hierarchical cellular system is proposed for accommodating a population of mobile users with different mobility profiles. This system employs an interconnection of \"virtual buses\", backed with a distributed hierarchical database to support an advanced routing of the signalling and traffic loads. In order to study the system performance a handshake resource negotiation protocol is proposed. The associated signalling traffic combined with mobility management signalling traffic is routed efficiently over the network. Furthermore, two interlayer bandwidth partitioning techniques are presented and evaluated through computer simulations.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115442619","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
MAC units for matched filters in DS-CDMA systems DS-CDMA系统中匹配滤波器的MAC单元
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881605
A. Premkumar, A. Madhukumar, C. Lau
{"title":"MAC units for matched filters in DS-CDMA systems","authors":"A. Premkumar, A. Madhukumar, C. Lau","doi":"10.1109/PIMRC.2000.881605","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881605","url":null,"abstract":"High data rates in wireless radio environments are becoming common. Current system designs are inadequate to meet the speed requirements that are anticipated in the newer services. The computational complexities in the subsystems increase in direct proportion. We propose alternative multiply accumulate units for the pulse shaping filters that use a new representation for their coefficients. Consequently, these new structures are fast, efficient and consume less power. The filters proposed take into account constraints, such as, intersymbol interference, response characteristics etc. in their design methodology.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115507209","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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