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Data Communication Through the Atmospheric Burst Error Channel 通过大气突发错误信道的数据通信
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089601
N. Jayant
{"title":"Data Communication Through the Atmospheric Burst Error Channel","authors":"N. Jayant","doi":"10.1109/TCOM.1967.1089601","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089601","url":null,"abstract":"Simple and easily utilized techniques are suggested for reliable transmission of binary data in the presence of atmospheric noise bursts. The techniques utilize the time statistics of the noise bursts, now known to be log-normal, and operate on one-way channels. Two modes of transmission are distinguished. The first mode involves double or triple transmission of an error detection code word. The second mode of transmission is based on burst error correction, provided either by a majority count principle or by the recurrent codes of Hagelbarger. Numerical calculations indicate the superior performance of the error detection techniques.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133388832","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: 6
Phase Cancellation Probabilities for Several Sinusoidal Signals in Gaussian Noise 高斯噪声下几种正弦信号的相位抵消概率
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089605
A. Cohen
{"title":"Phase Cancellation Probabilities for Several Sinusoidal Signals in Gaussian Noise","authors":"A. Cohen","doi":"10.1109/TCOM.1967.1089605","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089605","url":null,"abstract":"The problem of the detection of a noncoherent sinusoidal signal in the presence of Gaussian noise plus several other interfering sinusoidal signals is considered. The receiver operation consists of envelope detection followed by threshold decision, and the signals are assumed to have equal amplitudes. The probability of phase cancellation, i.e., the probability that the envelope falls below threshold, is calculated as a function of threshold setting, signal-to-noise power ratio, and the number of simultaneous signals.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133163057","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
Improvements in the Design of Retransmission Systems 重传系统设计的改进
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089612
R. Benice, A. Frey
{"title":"Improvements in the Design of Retransmission Systems","authors":"R. Benice, A. Frey","doi":"10.1109/TCOM.1967.1089612","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089612","url":null,"abstract":"Two improvements in the design of retransmission (ARQ) systems are described which lead to simpler implementation and improved performance. One change simplifies the procedure for handling erroneous messages and repeat-request-bearing messages; the other simplifies the procedure for requesting retransmissions. The consequences of these modifications and the results of a comparative analysis with previous techniques are summarized.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"7 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123662344","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 New Data-Gathering and Control System 一种新的数据采集与控制系统
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089599
R. Sanders
{"title":"A New Data-Gathering and Control System","authors":"R. Sanders","doi":"10.1109/TCOM.1967.1089599","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089599","url":null,"abstract":"The Automatic Electric C-2000 Data-Gathering and Control System represents recent innovations in the field of industrial control. The system consists of a master station complex located at the hub of a communication network, linking it to a number of remote stations. An unusually efficient communication message structure is employed which, when used in conjunction with a high-speed data set, results in an exceptionally high information rate. An efficient and effective message security scheme is employed. The system is modular on both a functional and a per-point basis, allowing it to be efficiently employed in installations of all sizes.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132084749","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
FM Bandwidth as a Function of Distortion and Modulation Index 调频带宽作为失真和调制指数的函数
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1968.1089846
S. Plotkin
{"title":"FM Bandwidth as a Function of Distortion and Modulation Index","authors":"S. Plotkin","doi":"10.1109/TCOM.1968.1089846","DOIUrl":"https://doi.org/10.1109/TCOM.1968.1089846","url":null,"abstract":"The calculations of FM bandwidth under both sine wave modulation and noise modulation conditions are given as a function of allowable distortion and modulation index. Curves are given for distortion from -80dB to -20dB and modulation indexes from 1 to 10. Results include an approximate equation for the noise modulation case.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131853195","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
Evaluation of Error Correction Block Encoding for High-Speed HF Data 高速高频数据纠错分组编码的评价
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089593
K. Brayer, O. Cardinale
{"title":"Evaluation of Error Correction Block Encoding for High-Speed HF Data","authors":"K. Brayer, O. Cardinale","doi":"10.1109/TCOM.1967.1089593","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089593","url":null,"abstract":"Error-pattern data gathered from an operational HF digital data transmission system are shown to have characteristics which permit their direct classification into predominantly burst-, random-, and periodic-error categories. These data are useful in a proposed method for effectively evaluating and designing forward error detection and correction devices using interleaving and block error-correcting codes. The method is based on the strategy of transforming channel burst error patterns into easily corrected randomly distributed errors. The measure of randomness of observed errors is established by comparison with distributions of known randomerror data derived from a computer program simulation. A valid method is established which permits the quantitative evaluation of interleaver performance in terms of effective randomization of burst error patterns.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127538997","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: 24
Forced-Erasure Decoding and the Erasure Reconstruction Spectra for Group Codes 组码的强制纠删译码和纠删重构谱
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089602
R. Heller
{"title":"Forced-Erasure Decoding and the Erasure Reconstruction Spectra for Group Codes","authors":"R. Heller","doi":"10.1109/TCOM.1967.1089602","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089602","url":null,"abstract":"Forced-erasure decoding, an easily implementable technique for realizing the fullest capability of a code, is presented and discussed. This type of decoding combines the implementation simplicity of digital decoding with the performance enhancement expected of correlation decoding techniques. Adaptive versions, with and without interleaving for fading channels, are described. An exact expression for word-error probability in white Gaussian noise is derived. The concept of a code erasure reconstruction spectrum is introduced and several new results presented, along with a review of applicable, known ones.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131014879","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: 6
Cycle Slipping in Phase-Locked Loops 锁相环中的周期滑动
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089589
R. Tausworthe
{"title":"Cycle Slipping in Phase-Locked Loops","authors":"R. Tausworthe","doi":"10.1109/TCOM.1967.1089589","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089589","url":null,"abstract":"This article shows that the expected first-slip time of a phase-locked loop of arbitrary order can be found as the solution of a first-order linear differential equation, to which formal solutions are easily written. Computation of an exact solution involves being able to evaluate a certain conditional expectation which, for the first-order loop, is readily done and yields the exact known result. For higher order loops, an approximate evaluation of the expectation is presented and compared with experimentally obtained data of the secondorder loop. The first-slip time based on this approximation also compares favorably with measured times.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131064782","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: 35
A Multicomputer Message Switching Data Processing System 多计算机信息交换数据处理系统
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089594
E. Cohler, H. Rubinstein
{"title":"A Multicomputer Message Switching Data Processing System","authors":"E. Cohler, H. Rubinstein","doi":"10.1109/TCOM.1967.1089594","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089594","url":null,"abstract":"This paper describes a number of new techniques for data processing in a message switching center that will improve system reliability and increase system availability. This data processing system contains several processor equipment pools introduced to avoid costly duplexing, yet it will keep equipment failures from interrupting operation. The system uses list processing techniques for memory allocation which result in efficient memory usage and allow each processor access to the entire message store. Direct access to memory interface is used to permit automatic switchover of service from one processor to another if the processor fails and to minimize the use of per-line-equipment. Techniques will also be described for message accounting, routing, and processor scheduling, which are independent of machine configuration.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130479195","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
Carrier Transmission on Voice Loaded Loops 话音加载环上的载波传输
IEEE Transactions on Communication Technology Pub Date : 1967-06-01 DOI: 10.1109/TCOM.1967.1089606
M. Birck
{"title":"Carrier Transmission on Voice Loaded Loops","authors":"M. Birck","doi":"10.1109/TCOM.1967.1089606","DOIUrl":"https://doi.org/10.1109/TCOM.1967.1089606","url":null,"abstract":"A new telephone line loading scheme is reported that permits application of subscriber carrier systems to voice loaded cable pairs with practically no degradation to either voice or carrier transmission. This scheme, termed super-loading, makes use of a bifilar wound toroidal inductor having both windings center tapped, with an LC network joining the center taps. This arrangement produces a device that acts as a one-to-one transformer at frequencies where the LC network presents a low impedance and a series inductor when the network impedance is high. Data are presented comparing the transmission characteristics of nonloaded, nominally loaded, and super-loaded cable pairs at voice and carrier frequencies.","PeriodicalId":134522,"journal":{"name":"IEEE Transactions on Communication Technology","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1967-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120955429","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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