Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications最新文献

Adaptive multiuser receiver schemes for antenna arrays 天线阵列的自适应多用户接收方案

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-12-01 DOI: 10.1109/PIMRC.1995.477082

S. Hosur, A. Tewfik, V. Ghazi-Moghadam

引用次数: 3

A spatially and temporally optimal multi-user receiver using an array antenna for DS/CDMA 一种用于DS/CDMA的使用阵列天线的空间和时间最优的多用户接收机

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-11-25 DOI: 10.1109/PIMRC.1995.477084

R. Kohno, N. Ishii, M. Nagatsuka

{"title":"A spatially and temporally optimal multi-user receiver using an array antenna for DS/CDMA","authors":"R. Kohno, N. Ishii, M. Nagatsuka","doi":"10.1109/PIMRC.1995.477084","DOIUrl":"https://doi.org/10.1109/PIMRC.1995.477084","url":null,"abstract":"The tandeni structure of a iiiatclied filter (MF) aiid a iiiaxiiiiuiii likelihood sequence es& inator (MLSE) using the Vit,erbi algorit,liiii (VA) lim been considered t,o be an optimal receiver for digital pulse-amplitude seyiiciiccs iii the ~)rcsciicc of ititmsyiiibo1 interference (ISI) iLli(1 iLtlclitivc: whit-e GiLitssiiLir tioisc (AWGN). An adaptive i~ r ray >llit(:liliiL 1 ~ ~ s t,lic capability of filtering reccivt:tl sigiials in tJie spiitiitl tloiiiaiii as well as in tlie teiiiporiil 0 1 1 ~ . In this paper. w(: propose a receiver structiirt: using m i iLdaptiv(: array antenna, a digital filter slid the VA tliRt, is sI)iltiidly and teiiiporally optimal for iiiultinscr dctmtioii in a DS/CDMA eiivironiiient. This receiver iiscs it tapped delay line (TDL) array alit,ciiiia iilitl thc VA. wliicli 1)rovides a iiiaxiiiiuiii likelihood s(:qiieiic(: c:stbiiiiatSe froiii t h spatially ancl t e l ~ l ~ ) ~ r i ~ l l y wliitciicd iiiiLt.diCd fil t t r (STWMF) output,. Pcrforiiiaiic:c: of thc propos(:d rcccivt:r is evaluated by t,hcoret,ical iL1ialysis xiid cotiipitt.c:r sinulations.","PeriodicalId":433500,"journal":{"name":"Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130106504","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: 49

Adaptive infrared time division multiple access (AIR TDMA) for an in-house wireless hybrid LAN 用于内部无线混合局域网的自适应红外时分多址(AIR TDMA)

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.476908

H. Zeino, M. Misson

{"title":"Adaptive infrared time division multiple access (AIR TDMA) for an in-house wireless hybrid LAN","authors":"H. Zeino, M. Misson","doi":"10.1109/PIMRC.1995.476908","DOIUrl":"https://doi.org/10.1109/PIMRC.1995.476908","url":null,"abstract":"We present two versions of access methods that are TDMA variants for a network composed of a wired backbone and of infrared cells. This in-house network has been studied to make mobile stations communicate with fixed stations in an industrial context. The access to the wireless medium is managed by the distribution of time slots by a specific wired station that knows the distribution of the mobiles within the installation. The first variant of TDMA consists of grouping the cells into classes in such a way that all the cells of the same class could have access to the wireless channel during the same time slot. The right of access to the wireless medium is then distributed among those classes where at least one cell has a mobile in range. In the second method, time slots are distributed to cells that will actually use this slot to communicate with some mobiles. The originality of this method lies in the way it can adapt to the evolution of the mobiles position inside this cellular network. The simulation results presented allow us to compare the access frequency to the wireless channel. They show the advantages of the second method.","PeriodicalId":433500,"journal":{"name":"Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115272519","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

Estimation of indoor infrared channel parameters using neural networks 基于神经网络的室内红外通道参数估计

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.476904

Mohammadreza Pakravan

引用次数: 7

Viterbi decoding with dual timescale traceback processing 维特比解码与双时间尺度回溯处理

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.476886

O. Joeressen, H. Meyr

引用次数: 2

A capacity effect of bridging functionality applied to wireless packet datalink 应用于无线分组数据链路的桥接功能的容量效应

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.477313

T. Ohsawa, G. Maguire

引用次数: 0

Adaptive combination of cancelling co-channel interference and decoding of error-correcting codes for DS-SS CDMA mobile communication system DS-SS CDMA移动通信系统中同信道干扰消除与纠错码解码的自适应组合

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.480967

K. Shaheen, S. Gupta

{"title":"Adaptive combination of cancelling co-channel interference and decoding of error-correcting codes for DS-SS CDMA mobile communication system","authors":"K. Shaheen, S. Gupta","doi":"10.1109/PIMRC.1995.480967","DOIUrl":"https://doi.org/10.1109/PIMRC.1995.480967","url":null,"abstract":"This paper introduces an adaptive cascaded combination of cancelling co-channel interference (CCI) and decoding of error-correcting codes for a DS-SS CDMA mobile communication system. The analysis of a previous study by Shaheen and Gupta (see IEEE IPCCC Proceedings, Phoenix, Arizona, March 1995) indicated that conventional CCI cancellation techniques might not be as effective, especially for heavily loaded mobile communication systems. This paper extends this work by incorporating integrated filtering and decoding techniques. The extended system is evaluated under the same extreme interference conditions where the receiver is subjected to intersymbol interference (ISI), multi-access interference (MAI), and co-code CCI (CCCCI) generated within the mother cell and from the neighboring cells. Theoretical and simulation results are developed to evaluate the proposed system performance using signal to noise ratio (SNR) and bit error rate (BER) versus number of interfering users from within the cell and from the surrounding cells, and the normalized mean square error (MSE) in parameters estimation.","PeriodicalId":433500,"journal":{"name":"Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124870860","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

Capacity improvement of microcellular systems using signal cyclic spectral properties 利用信号循环频谱特性改进微蜂窝系统容量

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.477381

F. Hendessi, A. Sheikh, R. Hafez

引用次数: 1

A frequency and timing period acquisition technique for OFDM systems 一种用于OFDM系统的频率和定时采集技术

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.477096

H. Nogami, T. Nagashima

引用次数: 139

An optimizable guard-channel-based handover procedure for mobile microcellular systems 一种可优化的基于保护信道的移动微蜂窝系统切换程序

Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 1995-09-27 DOI: 10.1109/PIMRC.1995.477384

M. Ruggieri, D. Giancristofaro, F. Graziosi, F. Santucci

{"title":"An optimizable guard-channel-based handover procedure for mobile microcellular systems","authors":"M. Ruggieri, D. Giancristofaro, F. Graziosi, F. Santucci","doi":"10.1109/PIMRC.1995.477384","DOIUrl":"https://doi.org/10.1109/PIMRC.1995.477384","url":null,"abstract":"In mobile macrocellular systems the effectiveness of queueing and/or channel reservation for handover requests has been widely proved. The authors have recently proposed a priority-based handover algorithm for a mixed macro-microcellular environment. The effectiveness of a combined use of handover request queueing at microcell level and handover channel reservation at macrocell level has been shown. However, the use of reserved (guard) channels for handover requests needs for a proper compromise between system performance and frequency reuse efficiency. In fact, any channel which is reserved for handovers contributes to decrease the effectiveness of the system frequency reuse In the present paper the effects of handover reserved channels on system performance are explored, in particular by varying the frequency reuse plan of a mixed macro-microcellular system. An optimization potentiality of guard channel allocation is identified. The latter represents an important step toward the design of handover procedures aimed at a proper compromise between frequency reuse efficiency and handover protection in critical urban environments. plan.","PeriodicalId":433500,"journal":{"name":"Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125086027","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