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B-ISDN user network interface: implementation of performance monitoring functions using SONET overhead B-ISDN用户网络接口:利用SONET开销实现性能监控功能
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117190
H.R. Salloum, S. Yoneda
{"title":"B-ISDN user network interface: implementation of performance monitoring functions using SONET overhead","authors":"H.R. Salloum, S. Yoneda","doi":"10.1109/ICC.1990.117190","DOIUrl":"https://doi.org/10.1109/ICC.1990.117190","url":null,"abstract":"The authors review the UNI (user-network interface) structure and identify operations and maintenance functions required across the UNI. In particular, they discuss the SONET (synchronous optical network) overhead required to support transmission error performance monitoring functions across the UNI. It was proposed that B3 and G1 bytes of the SONET path overhead be used for transmission performance monitoring across the UNI. This proposal was accepted by Standards Committee T1-Telecommunications (T1S1.1). With this minimal set of performance monitoring functions across the UNI, the network can still maintain reliable service to the user without causing undue complexity and additional cost in the user equipment.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131100809","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
Layered service software generation based on service description procedures 基于服务描述过程的分层服务软件生成
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117100
O. Mizuno, Y. Niitsu
{"title":"Layered service software generation based on service description procedures","authors":"O. Mizuno, Y. Niitsu","doi":"10.1109/ICC.1990.117100","DOIUrl":"https://doi.org/10.1109/ICC.1990.117100","url":null,"abstract":"The authors propose that, in developing service software, the planning and design phase be divided into three steps: a general specification description, a signal specification description, and a nodal processing description. A specification conversion system which allows the automatic conversion of the general specification to the nodal processing specification through the signal specification, and a user-friendly development environment which allows a graphic and computer-aided specification description are developed. The service software that is generated from the nodal processing specification description can be executed on a general-purpose computer that controls a PABX (private automatic branch exchange). The prototype system for evaluation of the layered service software generation automation method is discussed.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771634","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
Portable phone service for an upscale subdivision-an economic assessment 高档小区的手提电话服务-经济评估
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117033
D. Duet
{"title":"Portable phone service for an upscale subdivision-an economic assessment","authors":"D. Duet","doi":"10.1109/ICC.1990.117033","DOIUrl":"https://doi.org/10.1109/ICC.1990.117033","url":null,"abstract":"The economic advantages of applying low-powered digital radio in the last 1000 ft of the telephone local loop are investigated. The local loops in this study serve subscribers in a newly developed subdivision. The loop facility to accomplish this consists of two components. The first is a digital multiplexed cable carrier system from the central office to various radio ports strategically located in the service area. The second consists of low-powered, digital, multiple-access radio links which connect subscribers to the radio ports. The radio loop facility was configured to provide service only to subscribers within the boundaries of the subdivision. The results of the economic study showed that radio technology has the potential of being a viable alternative to a conventional metallic cable facility. The degree of attractiveness depends upon the system design (number of radio ports required).<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132938002","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
622 Mbps SONET-like digital coding, multiplexing, and transmission of advanced television signals on single mode optical fiber 在单模光纤上实现622 Mbps的sonet式数字编码、多路复用和高级电视信号传输
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117232
A. Jalali, P. Fleischer, W. Stephens, P. Huang
{"title":"622 Mbps SONET-like digital coding, multiplexing, and transmission of advanced television signals on single mode optical fiber","authors":"A. Jalali, P. Fleischer, W. Stephens, P. Huang","doi":"10.1109/ICC.1990.117232","DOIUrl":"https://doi.org/10.1109/ICC.1990.117232","url":null,"abstract":"An all-digital 622-Mb/s SONET-like ATV (advanced television) codec and transport system was demonstrated over 42 km of optical fiber. This system uses a 4:1:1 sampling scheme and removal of the sync in the transmitter portion of the codec to fit the signal into a 622-Mb/s bandwidth. The codec and transmission link are picture format independent, and ATV signals, with all existing as well as anticipated formats, can be transported. Before transmission, the digitized signal was organized into four 155-Mb/s channels to which the SONET (synchronous optical network) framer functions as well as audio and other data were added. These channels were byte interleaved together to form a serial 622-Mb/s SONET-like data stream. This data stream was sent over 42 km of single-mode optical fiber using a low-cost optical transmitter and receiver developed for subscriber loop applications. An error rate of under 10/sup -11/ was achieved at this distance.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133592172","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 protocol for voice and data integration in undirectional bus networks 一种在单向总线网络中用于语音和数据集成的协议
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117092
K. Apostolidis, Xie Xing, L. Merakos
{"title":"A protocol for voice and data integration in undirectional bus networks","authors":"K. Apostolidis, Xie Xing, L. Merakos","doi":"10.1109/ICC.1990.117092","DOIUrl":"https://doi.org/10.1109/ICC.1990.117092","url":null,"abstract":"A movable-boundary protocol is proposed for integrating packet voice and data in unidirectional bus networks. The head station on the bus learns the number of ready-to-transmit voice stations by reading a request bit in the header of the received packets and allocates the exact number of voice slots needed in each frame. The protocol guarantees that the delay of a voice packet will not exceed two times the frame duration plus the round-trip signal propagation delay at the head station. The average data packet delay is evaluated using simulation and an approximate analysis method.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133927312","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
The economic benefits of VSATs sat的经济效益
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117107
T. Saam
{"title":"The economic benefits of VSATs","authors":"T. Saam","doi":"10.1109/ICC.1990.117107","DOIUrl":"https://doi.org/10.1109/ICC.1990.117107","url":null,"abstract":"The author describes several state-of-the-art VSAT (very small aperture terminal) satellite systems currently in production and compares their economics with terrestrial networks. A real network example is analyzed in the context of VSAT technology alternatives. The economic performance of VSATs is found to depend on the user's network specification and the technology. Per-point costs of Ku-band VSATs, for example, improve with larger networks. Spread-spectrum or LSAT costs improve with lower data rates. Terrestrial costs improve with more secondary stations per line. Technology is therefore matched with economy by virtue of specifics.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134340867","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
Simulated annealing for throughput optimization in communication networks with window flow control 基于窗口流控制的通信网络吞吐量优化模拟退火
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117262
I. Akyildiz, R. Shonkwiler
{"title":"Simulated annealing for throughput optimization in communication networks with window flow control","authors":"I. Akyildiz, R. Shonkwiler","doi":"10.1109/ICC.1990.117262","DOIUrl":"https://doi.org/10.1109/ICC.1990.117262","url":null,"abstract":"A queuing model of a multichain network is presented where the network is window flow controlled on its virtual channel of the communication network. Its performance is optimized based on simulated annealing. The solution space is assumed to be the set of all admissible service rates of all stations with the nonlinear cost constraint. The optimum total throughput of the network is determined for different chain packets. It is shown that the most desirable method against congestion in any region is to speed up the transmission rate of that channel, but since this costs too much, alternative methods should be considered which reduce the window size within the tolerable limit of throughputs.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"45 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114038955","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: 7
Carrier phase synchronisation for a coded PSK signal in satellite links 卫星链路中编码PSK信号的载波相位同步
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117300
S. W. Cheung
{"title":"Carrier phase synchronisation for a coded PSK signal in satellite links","authors":"S. W. Cheung","doi":"10.1109/ICC.1990.117300","DOIUrl":"https://doi.org/10.1109/ICC.1990.117300","url":null,"abstract":"A technique for carrier synchronization of a digital modem is studied. The modem transmits a rate-3/4 convolutionally encoded 16-phase-shift keyed signal over a channel with additive white Gaussian noise. The carrier synchronization circuit is data aided, employing decision feedback. Two estimates of carrier phase of the received coded signal are used in the synchronization circuit. The results of computer-simulation tests are used to compare the performances of the system using two phase estimators. It is shown that the carrier-phase estimate of the received coded signal can be improved significantly by combining the phase estimation process with the decoding of the signal. With the second phase estimator which makes use of a maximum likelihood decoder, half of the 16 possible locking positions are eliminated.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115660074","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
On-board satellite switch controller for multi-beam communication satellite 多波束通信卫星星载开关控制器
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117240
T. Ono, M. Mori
{"title":"On-board satellite switch controller for multi-beam communication satellite","authors":"T. Ono, M. Mori","doi":"10.1109/ICC.1990.117240","DOIUrl":"https://doi.org/10.1109/ICC.1990.117240","url":null,"abstract":"A compact and highly reliable onboard satellite switch controller (SSC) is proposed for a multibeam communication satellite, the Engineering Test Satellite VI. In order to reduce the size, weight, and power consumption of the SSC and to increase its reliability, a latchup-free high-density (64-kb) memory, a microprocessor, and two types of CMOS/bulk LSIs (8 K gate each) have been developed. Moreover, to realize immunity from cosmic ray-induced soft-error, a modular redundant with adaptive error correction scheme is adopted. As a result, the developed onboard SSC is free from soft-error, and the SSC's survival probability is estimated to be as high as 0.99 for a ten-year mission. The weight and power consumption have been reduced to one fourth and one tenth of those of a conventional system, respectively.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114160311","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
The design of a TDMA system for passive optical networks 无源光网络TDMA系统的设计
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117159
D. Clarke, C.E. Hoppitt
{"title":"The design of a TDMA system for passive optical networks","authors":"D. Clarke, C.E. Hoppitt","doi":"10.1109/ICC.1990.117159","DOIUrl":"https://doi.org/10.1109/ICC.1990.117159","url":null,"abstract":"The authors describe the design methodology and implementation details of a time-division multiple access (TDMA) system which has been developed to allow point to multipoint operation of passive optical networks. This TDMA bit transport system transparently handles the multiplexing and control functions required for passive splitting optical networks. The system is generic and, with relatively simple interfacing, applicable to switching systems worldwide. The design has been implemented in ASIC (application-specific integrated circuit) technology for a forthcoming UK field trial of fiber in the subscriber loop.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116762299","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
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