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Proceedings IEEE International Conference on Communications ICC '95最新文献

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On improving the performance of shared buffered banyan networks 共享缓冲榕树网络性能改进研究
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.525221
Seong Leong Ng, B. Dewar
{"title":"On improving the performance of shared buffered banyan networks","authors":"Seong Leong Ng, B. Dewar","doi":"10.1109/ICC.1995.525221","DOIUrl":"https://doi.org/10.1109/ICC.1995.525221","url":null,"abstract":"The paper investigates three methods that will improve the performance of shared buffered banyan networks: cut through routing, biased conflict resolution, and speedup. The authors present analytical and simulation results for a shared buffered banyan multistage interconnection network (MIN) consisting of 2/spl times/2 (2 input and 2 output) switch elements (SEs) subjected to both uniform and unbalanced traffic patterns, with and without speedup. They show that when no speedup is used, the adoption of cut through routing in a shared buffered banyan MIN significantly improves the performance of the MIN. However when speedup at high loads is employed, the performance of the MIN is largely dependent on the size of the shared buffer in each SE and the output buffer size. They also propose two conflict resolution algorithms to improve MIN performance.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126925358","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
Minimization of paging and registration costs through registration deadlines 通过注册截止日期最小化分页和注册成本
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524201
C. Rose
{"title":"Minimization of paging and registration costs through registration deadlines","authors":"C. Rose","doi":"10.1109/ICC.1995.524201","DOIUrl":"https://doi.org/10.1109/ICC.1995.524201","url":null,"abstract":"Given that the probability distribution on the user location as a function of time is either known or can be calculated, the author shows how to formulate the paging/registration optimization problem in terms of a timeout parameter, /spl tau//sub m/; the maximum amount of time to wait before registering given the last known location was m. Timer-based methods, as opposed to location-based methods, do not require the user to record and process location information during the time between location updates. This feature might be desirable for minimizing mobile receiver transmitter use during idle periods.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126023661","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: 23
A field demonstration of 20 Gb/s capacity (2/spl times/10 Gb/s) transmission over 360 km installed standard fiber 现场演示了安装标准光纤的360公里20gb /s容量(2/spl倍/ 10gb /s)传输
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.525242
Y.K. Park, P. Yeates, J. Delavaux, O. Mizuhara, T.V. Nguyen, L. D. Tzeng, R. Tench, B.W. Hakki, C.D. Chen, R. Nuyts, K. Ogawa
{"title":"A field demonstration of 20 Gb/s capacity (2/spl times/10 Gb/s) transmission over 360 km installed standard fiber","authors":"Y.K. Park, P. Yeates, J. Delavaux, O. Mizuhara, T.V. Nguyen, L. D. Tzeng, R. Tench, B.W. Hakki, C.D. Chen, R. Nuyts, K. Ogawa","doi":"10.1109/ICC.1995.525242","DOIUrl":"https://doi.org/10.1109/ICC.1995.525242","url":null,"abstract":"We have demonstrated two channels of 10 Gb/s transmission over 360 km installed \"standard\" (non-DSF) fiber lines. The system consisted of two 10 Gb/s channels with wavelengths ranging between 1552 and 1558 nm and optical repeaters separated by 120 km (corresponding to a 33 dB fiber loss and a +2100 ps/nm dispersion per repeater span). A robust system hardware design and new compact optical repeaters (incorporating Er-doped fiber amplifiers and dispersion compensation fibers) enabled us to achieve a long term \"error-free\" transmission over 5 days of continuous operation in the field environment (corresponding to less than 10/sup -15/ BER). The wavelength crosstalk and unequal dispersion compensation between the two channels had a negligible effect on the system performance. The result of this field experiment clearly demonstrates that both loss and dispersion of the embedded \"standard\" fiber in multichannel long-haul transmission systems with a 10 Gb/s OC192/STM64 line rate can be overcome.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127964340","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
Analysis of residual interference after MSE linear equalization of multitone spread spectrum signals 多音扩频信号MSE线性均衡后的剩余干扰分析
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524485
L. Vandendorpe, O. van de Wiel
{"title":"Analysis of residual interference after MSE linear equalization of multitone spread spectrum signals","authors":"L. Vandendorpe, O. van de Wiel","doi":"10.1109/ICC.1995.524485","DOIUrl":"https://doi.org/10.1109/ICC.1995.524485","url":null,"abstract":"The combination of multitone modulation with direct sequence spectrum spreading has been introduced by Vandendorpe (see IEEE International Zurich Seminar, p.440-451, 1994). The performance of a correlation receiver has been evaluated for a multipath channel. The analysis has been extended to the presence of a multiple access interference. We analyze the equalization problem of such a system. In order to understand the potential of the system we first investigate the steady-state behavior of the MIMO equalizer for an MMSE design. The investigation is carried out for an equalizer following a receiver made of a bank of filters matched to both the symbol shape and the channel, which is a two path channel. Assuming BPSK symbols an exact expression of the bit error probability before and after equalization is obtained in the form of an integral by means of the characteristic function method.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132760752","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
Multi-code CDMA wireless personal communications networks 多码CDMA无线个人通信网
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524263
I. Chih-Lin, R. Gitlin
{"title":"Multi-code CDMA wireless personal communications networks","authors":"I. Chih-Lin, R. Gitlin","doi":"10.1109/ICC.1995.524263","DOIUrl":"https://doi.org/10.1109/ICC.1995.524263","url":null,"abstract":"Proposes a code division multiple access (CDMA) based system that can provide a smooth migration path to PCS, either from a digital cellular system (IS-95) or from a wideband CDMA system, to serve both isochronous and asynchronous applications. A unified digital bandwidth on demand platform is realized by allocating multiple codes (on demand), and hence increased capacity, to users. This approach, dubbed multi-code CDMA (MC-CDMA), will enable efficient delivery of all services made possible by digital cellular, CDPD, and other PCS technologies. Since a large variety of services (voice, data, image, and perhaps video) is expected in future wireless networks, users with very different, and time-varying, source rates will have to be accommodated. MC-CDMA is a wireless system whose rate (which is proportional to the number of codes assigned to the user) and service are dynamically matched to users' needs and can evolve from commercial digital cellular systems. This system retains the CDMA advantage in combating multipath and does not require significant modifications of the radio frequency (RF) circuitry. The dynamic, packet-like capacity access enabled by MC-CDMA will allow users to access the base station at different source rates, and when all other users are idle, will provide peak rate access to a single user.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133768388","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: 341
Analysis of a differentially coherent spread-spectrum acquisition receiver 差分相干扩频采集接收机的分析
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524496
M. Zarrabizadeh, E. Sousa
{"title":"Analysis of a differentially coherent spread-spectrum acquisition receiver","authors":"M. Zarrabizadeh, E. Sousa","doi":"10.1109/ICC.1995.524496","DOIUrl":"https://doi.org/10.1109/ICC.1995.524496","url":null,"abstract":"Differentially coherent detectors for acquisition of BPSK direct sequence spread-spectrum signals on an AWGN channel are analyzed. Under the random code sequence assumption, an exact analysis of the differentially-coherent detection performance for both full period correlation (FPC) and partial period correlation (PPC) is carried out and the results are compared with those of classical non-coherent detection. Finally the mean acquisition times for both single-dwell and multiple-dwell acquisition schemes are compared with their non-coherent counterparts. An improvement of 5 dB in the performance of the receiver is achieved.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130314737","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
Low-complexity co-channel interference cancellation and macroscopic diversity for high capacity PCS 大容量PCS的低复杂度同信道干扰消除和宏观分集
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524223
P. Wong, D. Cox
{"title":"Low-complexity co-channel interference cancellation and macroscopic diversity for high capacity PCS","authors":"P. Wong, D. Cox","doi":"10.1109/ICC.1995.524223","DOIUrl":"https://doi.org/10.1109/ICC.1995.524223","url":null,"abstract":"More than a factor of 3 increase in overall PCS capacity can be achieved in small, hand-held communication devices with limited battery power or in small, low-complexity base stations when incorporating simple interference cancellation techniques without training sequences in the channel access algorithm that realizes macroscopic selection diversity based on signal quality measurement. The comparison is done with respect to microscopic selection diversity and macroscopic selection diversity based on channel power measurement. Results were obtained by computer simulations.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130515800","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: 9
Vector neural networks for digital satellite communications 数字卫星通信的矢量神经网络
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524521
M. Ibnkahla, Francis Castanie
{"title":"Vector neural networks for digital satellite communications","authors":"M. Ibnkahla, Francis Castanie","doi":"10.1109/ICC.1995.524521","DOIUrl":"https://doi.org/10.1109/ICC.1995.524521","url":null,"abstract":"Conventional techniques used for identification and equalization of nonlinear M-ary PSK digital satellite channels are based on linear or nonlinear filtering devices (e.g. tapped delay line equalizers, Volterra series approaches). This paper uses a new technique based on the vector neural network (VNN) and Kohonen (1989) self organizing feature map. We have used a VNN for adaptive equalization and identification of the satellite channel. The decision process is performed by a Kohonen map.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130810155","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: 18
Estimating the cumulative downtime distribution of highly reliable components 估计高可靠性部件的累积停机时间分布
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.525160
D. Jeske
{"title":"Estimating the cumulative downtime distribution of highly reliable components","authors":"D. Jeske","doi":"10.1109/ICC.1995.525160","DOIUrl":"https://doi.org/10.1109/ICC.1995.525160","url":null,"abstract":"Compound Bernoulli processes are motivated as satisfactory approximations to alternating renewal processes that model the availability of highly reliable components. The cumulative downtime distribution derived from a compound Bernoulli process is more tractable and can easily be estimated from data using maximum likelihood techniques. The special case of exponential repair times is examined in detail and a uniformly minimum variance unbiased estimator for the cumulative downtime distribution is derived and compared to the maximum likelihood estimator and a nonparametric estimator in terms of mean-squared error.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116636357","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
Impact of runlengths of dropped packets in shared time division duplexing (STDD) 共享时分双工(STDD)中丢包长度的影响
Proceedings IEEE International Conference on Communications ICC '95 Pub Date : 1995-06-18 DOI: 10.1109/ICC.1995.524432
H. Papadopoulos, C. Sundberg
{"title":"Impact of runlengths of dropped packets in shared time division duplexing (STDD)","authors":"H. Papadopoulos, C. Sundberg","doi":"10.1109/ICC.1995.524432","DOIUrl":"https://doi.org/10.1109/ICC.1995.524432","url":null,"abstract":"There has been interest in the area of short distance wireless access to the ubiquitous telephone network. These systems are often referred to in the context of personal communication networks (PCNs) or personal communication systems (PCSs). STDD (shared time division duplexing) is a high capacity, high quality, low delay multiple access technique for microcellular systems. By sharing time slots in both directions of transmission, it provides a considerable increase in capacity over the conventional time division systems with slow speech activity detection (SAD). We investigate the temporal robustness of STDD. We consider the statistics of the runlength of dropped packets and show that both STDD and TDMA/TDD/SAD may suffer from long periods of dropped packets at full capacity. We introduce circular interleaving as a method of reducing the runlength of dropped packets, at a cost of a negligible increase in control information. A number of numerical results are included for the short frame length of 2 ms.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131091000","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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