Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188705
K. Kerpez
The application of two types of forward error correction codes to the DS1 rate asymmetric digital subscriber line (ADSL) channel is examined: interleaved Reed-Solomon codes used for compact disc, and Iwadare burst error correction codes. A model is derived for the distribution of burst errors that impulse noise causes with ADSL. This model is used to analyze the performance of the codes in the presence of impulse noise. The bit error rate with crosstalk or Gaussian noise is also determined and results are compared to those for uncoded transmission. It is found that the compact disc codes are very effective for ADSL.<>
{"title":"Forward error correction for asymmetric digital subscriber lines (ADSL)","authors":"K. Kerpez","doi":"10.1109/GLOCOM.1991.188705","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188705","url":null,"abstract":"The application of two types of forward error correction codes to the DS1 rate asymmetric digital subscriber line (ADSL) channel is examined: interleaved Reed-Solomon codes used for compact disc, and Iwadare burst error correction codes. A model is derived for the distribution of burst errors that impulse noise causes with ADSL. This model is used to analyze the performance of the codes in the presence of impulse noise. The bit error rate with crosstalk or Gaussian noise is also determined and results are compared to those for uncoded transmission. It is found that the compact disc codes are very effective for ADSL.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132613432","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188572
M. Karol, B. Glance
The performance aspects of the PAC (protection-against-collision) optical packet network are discussed. An analysis is made of the delay-throughput performance of this network for uniform traffic patterns. Results show that in geographically distributed applications the maximum achievable throughput (normalized to the transmission rate) is typically between 0.4 and 0.5 per channel. For example, the maximum achievable throughput is between 400 and 500 Gb/s for a 1000-channel system with a 1-Gb/s transmission rate. In a centralized switch, the (normalized) maximum achievable throughput can approach 0.8 per channel. These values are higher than previously published optical systems.<>
{"title":"Performance of the PAC optical packet network","authors":"M. Karol, B. Glance","doi":"10.1109/GLOCOM.1991.188572","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188572","url":null,"abstract":"The performance aspects of the PAC (protection-against-collision) optical packet network are discussed. An analysis is made of the delay-throughput performance of this network for uniform traffic patterns. Results show that in geographically distributed applications the maximum achievable throughput (normalized to the transmission rate) is typically between 0.4 and 0.5 per channel. For example, the maximum achievable throughput is between 400 and 500 Gb/s for a 1000-channel system with a 1-Gb/s transmission rate. In a centralized switch, the (normalized) maximum achievable throughput can approach 0.8 per channel. These values are higher than previously published optical systems.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"13 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132215277","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188693
M. LeRoux, D. Bernardi
The personal communication service proposed aims at providing the most value to end users and service providers in a competitive marketplace. It was designed around a set of basic conditions-ubiquity, uniformity, community of interest, public addresses, price/value packaging-that have proven their worth with another highly successful communication service, POTS. The whole version is predicated on the concept of internetworking which will be made possible by a numbering scheme outgrown from the North American Numbering Plan (NANP) and the network interfaces proposed.<>
{"title":"Internetworking: the key PCS success factor","authors":"M. LeRoux, D. Bernardi","doi":"10.1109/GLOCOM.1991.188693","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188693","url":null,"abstract":"The personal communication service proposed aims at providing the most value to end users and service providers in a competitive marketplace. It was designed around a set of basic conditions-ubiquity, uniformity, community of interest, public addresses, price/value packaging-that have proven their worth with another highly successful communication service, POTS. The whole version is predicated on the concept of internetworking which will be made possible by a numbering scheme outgrown from the North American Numbering Plan (NANP) and the network interfaces proposed.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134221087","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188354
D. Falconer, E. Arnon
Simple coordinated transmission schemes are proposed and analyzed, in which independent but identically PAM (pulse-amplitude-modulation) coded data are transmitted over two subscriber loop pairs in the presence of near-end crosstalk from other pairs' transmitters. A maximum-likelihood detection scheme utilizing noise variance and correlation between the two pairs is shown to yield significant improvement in performance, especially if there is an unbalance in the channel signal-to-noise ratios on the two pairs, or if there is significant noise correlation.<>
{"title":"Simple reception techniques for coordinated two-pair digital transmission","authors":"D. Falconer, E. Arnon","doi":"10.1109/GLOCOM.1991.188354","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188354","url":null,"abstract":"Simple coordinated transmission schemes are proposed and analyzed, in which independent but identically PAM (pulse-amplitude-modulation) coded data are transmitted over two subscriber loop pairs in the presence of near-end crosstalk from other pairs' transmitters. A maximum-likelihood detection scheme utilizing noise variance and correlation between the two pairs is shown to yield significant improvement in performance, especially if there is an unbalance in the channel signal-to-noise ratios on the two pairs, or if there is significant noise correlation.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122917238","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188461
P. Johnson
The author examines the recent efforts of the ANSI T1M1.5 working group and T1M1 committee to apply object-oriented (O-O) data modeling techniques to the development of standards for the operation, administration, maintenance, and provisioning (OAM&P) of telecommunications networks (TNs). The use of these state-of-the-art data modeling techniques is launching the North American telecommunications network into an open, standard, multi-vendor communications environment. The author presents a description of the organization of the T1M1 standards body, a brief overview of the Telecommunications Management Network (TMN) model, the basic principles of O-O data modeling, a description of recent network management standardization efforts in T1M1 that use these techniques, and a brief description of current T1M1 work.<>
{"title":"Application of object-oriented techniques to the OAM&P of telecommunications networks","authors":"P. Johnson","doi":"10.1109/GLOCOM.1991.188461","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188461","url":null,"abstract":"The author examines the recent efforts of the ANSI T1M1.5 working group and T1M1 committee to apply object-oriented (O-O) data modeling techniques to the development of standards for the operation, administration, maintenance, and provisioning (OAM&P) of telecommunications networks (TNs). The use of these state-of-the-art data modeling techniques is launching the North American telecommunications network into an open, standard, multi-vendor communications environment. The author presents a description of the organization of the T1M1 standards body, a brief overview of the Telecommunications Management Network (TMN) model, the basic principles of O-O data modeling, a description of recent network management standardization efforts in T1M1 that use these techniques, and a brief description of current T1M1 work.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124489863","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188349
D. Heyman, A. Tabatabai, T. V. Lakshman
Some of the source modeling and performance issues related to providing video teleconference services over asynchronous transfer mode (ATM) networks were studied. Under certain circumstances, traffic periodicity (due to the constant video frame rate) can cause different sources with identical statistical characteristics to experience cell-loss rates which can differ by several orders of magnitude. Some of this source-periodicity effect can be mitigated by appropriate buffer scheduling. For the video teleconference sequence analyzed (without scene changes or scene cuts and with moderate motion), the number of cells per frame is not normally distributed. Instead, it follows a gamma (or negative binomial) distribution. For traffic studies, an autoregressive model of order 2 and a two-state Markov chain model either underestimate or overestimate the occurrence of frames with a large number of cells, and these frames are a primary factor in determining cell-loss rates. The order-2 autoregressive model, however, fits the data well in a statistical sense. A multistate Markov chain model which can be derived from three traffic parameters (mean, correlation, and variance) is sufficiently accurate for use in traffic studies.<>
{"title":"Statistical analysis and simulation study of video teleconference traffic in ATM networks","authors":"D. Heyman, A. Tabatabai, T. V. Lakshman","doi":"10.1109/GLOCOM.1991.188349","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188349","url":null,"abstract":"Some of the source modeling and performance issues related to providing video teleconference services over asynchronous transfer mode (ATM) networks were studied. Under certain circumstances, traffic periodicity (due to the constant video frame rate) can cause different sources with identical statistical characteristics to experience cell-loss rates which can differ by several orders of magnitude. Some of this source-periodicity effect can be mitigated by appropriate buffer scheduling. For the video teleconference sequence analyzed (without scene changes or scene cuts and with moderate motion), the number of cells per frame is not normally distributed. Instead, it follows a gamma (or negative binomial) distribution. For traffic studies, an autoregressive model of order 2 and a two-state Markov chain model either underestimate or overestimate the occurrence of frames with a large number of cells, and these frames are a primary factor in determining cell-loss rates. The order-2 autoregressive model, however, fits the data well in a statistical sense. A multistate Markov chain model which can be derived from three traffic parameters (mean, correlation, and variance) is sufficiently accurate for use in traffic studies.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124653400","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188364
T. Fischer
It is shown that, for the subband coding of a wide sense stationary Gaussian source, with the implied separate encoding of the subband signals, the encoding performance is generally inferior to the rate-distortion function of the source. Exceptions are when the source is white or when the filters are ideal (brickwall).<>
{"title":"On the rate-distortion efficiency of subband coding","authors":"T. Fischer","doi":"10.1109/GLOCOM.1991.188364","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188364","url":null,"abstract":"It is shown that, for the subband coding of a wide sense stationary Gaussian source, with the implied separate encoding of the subband signals, the encoding performance is generally inferior to the rate-distortion function of the source. Exceptions are when the source is white or when the filters are ideal (brickwall).<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124812643","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188355
J. Cioffi, J. Bingham
A data-driven echo canceller for full-duplex data transmission with multitone modulation is presented. This echo canceller is shown not to be impaired by the eigenvalue-spread problems that are inherent in signal-driven echo cancellers, and to have numerical performance and cancellation range that equals, and in most cases exceeds, that of data-driven echo cancellers used in data transmission with baseband or quadrature amplitude modulation. The method makes use of frequency-domain updating, but with time-domain implementation of the canceller. It introduces no delay into the received signal path.<>
{"title":"A data-driven multitone echo canceller","authors":"J. Cioffi, J. Bingham","doi":"10.1109/GLOCOM.1991.188355","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188355","url":null,"abstract":"A data-driven echo canceller for full-duplex data transmission with multitone modulation is presented. This echo canceller is shown not to be impaired by the eigenvalue-spread problems that are inherent in signal-driven echo cancellers, and to have numerical performance and cancellation range that equals, and in most cases exceeds, that of data-driven echo cancellers used in data transmission with baseband or quadrature amplitude modulation. The method makes use of frequency-domain updating, but with time-domain implementation of the canceller. It introduces no delay into the received signal path.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124812684","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188622
O. Baireuther, R. Vinckier
It is argued that within the framework of the RACE (Research and Development in Advanced Communications in Europe) program, demonstrators and integration activities are essential contributions. They validate the work carried out in areas like strategies and technology and support application pilots. Their validity is applicable for all the elements of telecommunication networks, such as terminals, transmission, switching, network management and administration contained under the program. Various levels of the applied demonstrations are outlined and two integration projects are briefly noted.<>
{"title":"Demonstrators and integration","authors":"O. Baireuther, R. Vinckier","doi":"10.1109/GLOCOM.1991.188622","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188622","url":null,"abstract":"It is argued that within the framework of the RACE (Research and Development in Advanced Communications in Europe) program, demonstrators and integration activities are essential contributions. They validate the work carried out in areas like strategies and technology and support application pilots. Their validity is applicable for all the elements of telecommunication networks, such as terminals, transmission, switching, network management and administration contained under the program. Various levels of the applied demonstrations are outlined and two integration projects are briefly noted.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125149101","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}
Pub Date : 1991-12-02DOI: 10.1109/GLOCOM.1991.188677
G.D. Richman, D. L. Whelan
The need to predict the performance of digital microwave radio systems is introduced and the approach adopted by BT in the estimation of radio link fading for the outage prediction model is described. An examination of the limitations of fading laws given in the CCIR is made, and the need to separate composite fading into flat and selective components is identified. A simple method to perform this split is proposed and results from several links are presented. The certification of several radio performance prediction models submitted to the European Telecommunication Standards Institute is discussed.<>
{"title":"A new approach to the estimation of radio link fading","authors":"G.D. Richman, D. L. Whelan","doi":"10.1109/GLOCOM.1991.188677","DOIUrl":"https://doi.org/10.1109/GLOCOM.1991.188677","url":null,"abstract":"The need to predict the performance of digital microwave radio systems is introduced and the approach adopted by BT in the estimation of radio link fading for the outage prediction model is described. An examination of the limitations of fading laws given in the CCIR is made, and the need to separate composite fading into flat and selective components is identified. A simple method to perform this split is proposed and results from several links are presented. The certification of several radio performance prediction models submitted to the European Telecommunication Standards Institute is discussed.<<ETX>>","PeriodicalId":343080,"journal":{"name":"IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132231363","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}
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