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Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97最新文献

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Uplink coverage analysis of multicarrier joint detection code division multiple access based macrocellular radio systems 基于多载波联合检测码分多址的大蜂窝无线电系统上行覆盖分析
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.624372
F. Berens, J. Plechinger, P. Jung
{"title":"Uplink coverage analysis of multicarrier joint detection code division multiple access based macrocellular radio systems","authors":"F. Berens, J. Plechinger, P. Jung","doi":"10.1109/PIMRC.1997.624372","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.624372","url":null,"abstract":"A method for the analysis of the coverage of macrocellular radio systems is explained and applied to multicarrier joint detection code division multiple access (MC/JD-CDMA). Owing to the limited transmit powers of mobiles, the coverage is limited by the uplink. The method starts from the determination of the minimally allowed mean received power P/sub e,min/ in the uplink. To evaluate P/sub e,min/, the carrier-to-interference ratio C/I required to meet a particular quality of service (QoS) criterion must be quantified by simulations. With P/sub e,min/ and a given transmit power P/sub s/, the maximally allowed path loss a/sub max/ and the maximum average cell radius /spl rho//sub 0,max/ are calculated.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130082118","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
ARQ schemes with adaptive modulation/TDMA/TDD systems for wireless multimedia communication services 无线多媒体通信业务的自适应调制/TDMA/TDD系统ARQ方案
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.631159
M. Naijoh, S. Sampei, N. Morinaga, Y. Kamio
{"title":"ARQ schemes with adaptive modulation/TDMA/TDD systems for wireless multimedia communication services","authors":"M. Naijoh, S. Sampei, N. Morinaga, Y. Kamio","doi":"10.1109/PIMRC.1997.631159","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.631159","url":null,"abstract":"This paper proposes automatic repeat request (ARQ) protocols combined with an adaptive modulation system (AMS) (ARQ/AMS) to achieve high throughput data transmission for wireless multimedia communication services. First, it analyses the cause of the throughput limitation of the conventional fixed modulation ARQ system, and discusses basic strategies to improve the throughput performance by effectively combining ARQ and AMS. Next, it proposes a selective repeat ARQ (SR-ARQ) with AMS (SR-ARQ/AMS), and shows its throughput performance improvement effect. Finally, this paper proposes a type-II hybrid ARQ with a punctured convolutional coding combined with the AMS (type-II hybrid ARQ/AMS) to further improve the throughput performance. Computer simulation confirms that the proposed type-II hybrid ARQ/AMS can achieve higher throughput performance than the conventional selective repeat ARQ with QPSK under any channel conditions.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114225303","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: 46
Traffic performance of integrated satellite-terrestrial mobile network 星地融合移动网络的业务性能
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.627042
F. Graziosi, M. Ruggieri, F. Santucci
{"title":"Traffic performance of integrated satellite-terrestrial mobile network","authors":"F. Graziosi, M. Ruggieri, F. Santucci","doi":"10.1109/PIMRC.1997.627042","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.627042","url":null,"abstract":"The traffic performance of integrated cellular mobile and satellite networks is analyzed. Using a previously proposed traffic model for a hierarchical architecture, a parametric analysis is carried out in the ranges of interest for application scenarios of satellite systems under development (e.g. Iridium and Globalstar). In particular, the effect of the following parameters is considered for some constellations: (a) the ratio between the highest and the lowest value of the spatial traffic density in the area covered by a satellite spot; and (b) the percentage of the satellite spot area covered also by the underlying terrestrial cellular networks. A traffic capacity estimation is carried out for the generic satellite spot, using channel reservation (guard channels) for those users who directly access the satellite. Moreover, an improved traffic model is presented, which accounts for frequent inter-spot handovers in low Earth orbit satellite systems.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114839231","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
Efficient call admission control for mixed voice/data service in FPLMTS FPLMTS中语音/数据混合业务的有效呼叫接纳控制
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.631075
Yusun Hwang, Youngnam Han, Younghui Kim
{"title":"Efficient call admission control for mixed voice/data service in FPLMTS","authors":"Yusun Hwang, Youngnam Han, Younghui Kim","doi":"10.1109/PIMRC.1997.631075","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.631075","url":null,"abstract":"In this paper, mixed voice and data packet traffic handling schemes are presented in a wireless multimedia communication environment. Three different schemes are provided with analysis and simulation for comparison on the blocking probability and delay characteristics as performance measures. Analytical models such as a bivariate Markov process are provided and extensive simulation experiments are carried out to investigate the impact of major parameters on the system performance. These reveal that mixed priority schemes for delay sensitive data outperform error-sensitive data with queueing. Also, an optimal queue size as well as the optimal number of reserved channels for handoff delay-sensitive data are given for various traffic conditions.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115102770","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
Augmented encrypted key exchange using RSA encryption 增强加密密钥交换使用RSA加密
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.631052
A. Barmawi, Shingo Takada, N. Doi
{"title":"Augmented encrypted key exchange using RSA encryption","authors":"A. Barmawi, Shingo Takada, N. Doi","doi":"10.1109/PIMRC.1997.631052","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.631052","url":null,"abstract":"The augmented encrypted key exchange (A-EKE) uses a shared secret key for encryption. The A-EKE uses the hash of sender's password as the shared secret key. By using Simmon's attack the sender's password can be broken. If this is accomplished, the attacker is able to know the communicating parties session key used after authentication as well as in the authentication of the sender. Furthermore, using the broken session key and the password, the attacker can impersonate the real sender. To prevent this from happening, we propose a method to keep the session key and sender's password secret even if the attacker can break the shared secret key. This is accomplished by using RSA encryption. In our proposed scheme we use public keys which will be kept by the communicating parties and will be exchanged indirectly, i.e. instead of sending the whole public key the two parties will send the number which determines their public key, along with the shared key.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116241425","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
BER analysis of a novel hybrid modulation scheme for noncoherent DS-CDMA systems 一种新型非相干DS-CDMA混合调制方案的误码率分析
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.630892
D. Nikolai, K. Kammeyer
{"title":"BER analysis of a novel hybrid modulation scheme for noncoherent DS-CDMA systems","authors":"D. Nikolai, K. Kammeyer","doi":"10.1109/PIMRC.1997.630892","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.630892","url":null,"abstract":"A novel DS-CDMA transmission scheme combining the two well-known techniques of M-ary orthogonal and differential PSK-modulation is presented. This \"hybrid\" scheme is applicable to the noncoherent uplink of the IS-95 system where up to now only M-ary orthogonal modulation is used. The additional, PSK-modulated data show a slightly increased bit error rate (BER) compared to the data from M-ary modulation. However, the overall degradation caused hereby is far outweighed by the gain achieved by a higher spreading factor. Analytical results confirmed by simulations yield an improvement of approximately 1.0 dB in terms of E/sub b//N/sub 0/ on a Rayleigh fading channel when no channel coding is used. This considerable gain is achieved upon only slight modification of the conventional modulation/demodulation procedure at a low additional complexity. It is demonstrated that the IS-95 system is not properly designed since the full exploitation of noncoherent demodulation techniques results in a gain of nearly 2.0 dB.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133751211","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
Outage and error events in bursty channels 突发通道中的中断和错误事件
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.624355
M. Zorzi
{"title":"Outage and error events in bursty channels","authors":"M. Zorzi","doi":"10.1109/PIMRC.1997.624355","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.624355","url":null,"abstract":"The outage concept is discussed. Classic definitions, only based on the marginal statistics, are found not to be adequate for a proper characterization of the effect of channel impairments at the application level. A more flexible definition, which incorporates time parameters and appears suitable for the characterization of the performance of packet communications systems, is proposed. An analytical framework for the computation of various performance metrics is also presented. A Markov description is assumed for the channel, which allows closed-form solutions and can effectively model many situations of interest. Outage events are defined as being triggered by /spl tau//sub b/ consecutive channel errors, and being ended by /spl tau//sub g/ consecutive successes. A numerical example of application is given, and extensions of the analysis to more general definitions are discussed.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133831430","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: 65
Blind adaptive equalization and interference cancellation for wireless personal communications 无线个人通信盲自适应均衡与干扰消除
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.630914
B. Lo, K. Letaief
{"title":"Blind adaptive equalization and interference cancellation for wireless personal communications","authors":"B. Lo, K. Letaief","doi":"10.1109/PIMRC.1997.630914","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.630914","url":null,"abstract":"A new adaptive equalization scheme which can cancel both intersymbol interference (ISI) and co-channel interference (CCI) is proposed. The proposed algorithm is blind in the sense that we do not have knowledge of the training sequences of the interfering users. In particular, it is a maximum likelihood sequence estimation (MLSE) equalizer that is implemented by the generalized Viterbi algorithm (GVA) with an RLS-based channel estimator. To demonstrate the potential of the proposed method, various simulation results over a wireless communication environment in the presence of co-channel interference are presented. In addition, a sequential algorithm is introduced to reduce the computational complexity of GVA.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132820670","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 BER floor simulation for the indoor multipath environment 室内多径环境下的误码率地板模拟
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.624380
J. Takada, Hideo Mochida, K. Araki
{"title":"A BER floor simulation for the indoor multipath environment","authors":"J. Takada, Hideo Mochida, K. Araki","doi":"10.1109/PIMRC.1997.624380","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.624380","url":null,"abstract":"In a high bit rate indoor wireless communication system, i.e. wireless LAN, the inter-symbol interference (ISI) due to the multipath delayed waves much degrades the communication quality. This paper presents a BER floor simulation for the indoor multipath environment. The room is modeled as a rectangular box composed of dielectric walls, and multiple reflections are modeled as images of the source on the walls (Manabe et al., 1996). Wave polarization is carefully treated for higher accuracy of estimation. After multipath channel estimation, the equivalent transmission-path model (Karasawa et al., 1997) is introduced to simplify the BER floor estimation. Some results for different polarisation and different base station positions are compared, to find out the optimum design of the antenna properties.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133117801","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
VLSI implementation of digital receivers for paging and PCS 寻呼和pc数字接收机的VLSI实现
Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97 Pub Date : 1997-09-01 DOI: 10.1109/PIMRC.1997.630947
R. Subramanian, M. Barberis, H. Dawid, Klaus-Jürgen Koch
{"title":"VLSI implementation of digital receivers for paging and PCS","authors":"R. Subramanian, M. Barberis, H. Dawid, Klaus-Jürgen Koch","doi":"10.1109/PIMRC.1997.630947","DOIUrl":"https://doi.org/10.1109/PIMRC.1997.630947","url":null,"abstract":"Just as advanced digital communications techniques have been employed to increase the capacity of cellular systems, similar concepts are being used to extend the capacity and introduce multispeed and multiformat capabilities for portable messaging systems in the paging, and narrowband PCS arena. In this paper, we review the problem of designing digital receivers for these markets, where product life cycles are dramatically shortening. We first take a brief look at the standards uses in paging and narrowband PCS. Then, we examine the structure of digital receivers, focusing on the structure of baseband digital modems. We then propose and demonstrate a design methodology for the VLSI implementation of key algorithm modules using dataflow modeling and behavioral synthesis. Finally, we conclude with some observations on design technologies for PCS chipsets.","PeriodicalId":362340,"journal":{"name":"Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133239650","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
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