{"title":"Error correcting codes on periodically disturbed data channels","authors":"N. Lange","doi":"10.1109/ISIT.1994.394938","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394938","url":null,"abstract":"The paper introduces the \"periodically disturbed data channel\" (PDC) and some of its characteristics from the coding theoretical point of view. After defining an error model, the error detection conditions using cyclic codes are derived. Furthermore, two methods of error correction for this error model are examined. One is the use of a multiparameter burst error correcting code, the other one applies a cyclic code based on self-dual polynomials. For both methods a decoding strategy is developed.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126458802","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}
{"title":"Shared buffering in nonblocking copy networks","authors":"M. Hegde","doi":"10.1109/ISIT.1994.395024","DOIUrl":"https://doi.org/10.1109/ISIT.1994.395024","url":null,"abstract":"This paper investigates the performance of nonblocking copy networks employing the shared buffering scheme. We use the technique of tagged Markov chains to derive the stationary distributions for the occupancy of the buffers. Based on these stationary distributions, the delay, throughput, and packet loss probability are calculated as critical performance measures of the copy network. We also carry out analyses for variations in the copying policy such as fanout splitting wherein a copy request from a single packet may be completed over two time slots, and feed channel priority wherein there exists a certain priority among input channels.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125747277","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}
{"title":"Improved redundancy of a version of the Lempel-Ziv algorithm","authors":"A. Wyner, A. Wyner","doi":"10.1109/ISIT.1994.394962","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394962","url":null,"abstract":"The fixed-database Lempel-Ziv algorithm (FDLZ) closely resembles practical versions of the LZ algorithm that are widely in use. Bender and Wolf (1991) suggested a variant of LZ which empirically appears to perform well. We suggest a finite memory version of their scheme, and show that it has redundancy /spl rho//sub n/=O(1/log n) where n is the memory size. We are concerned with a data source which is a stationary, finite-memory random sequence that takes values in an alphabet of finite size A. The data source can be losslessly encoded using (H+/spl rho//sub n/) bits per source symbol, where n is a measure of the complexity of the code, and /spl rho//sub n//spl rarr/0, as n/spl rarr//spl infin/. The LZ algorithm is a universal procedure (which does not depend on the source statistics) for encoding the source at a rate close to the entropy.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122231019","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}
{"title":"Typical sequences and all that: entropy, pattern matching, and data compression","authors":"A. Wyner","doi":"10.1109/ISIT.1994.394969","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394969","url":null,"abstract":"The author applies pattern matching results to three problems in information theory. The characterisation of a probability law is also discussed.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127965976","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}
{"title":"On orthogonal wavelets with oversampling property","authors":"X. Xia, Zhen Zhang","doi":"10.1109/ISIT.1994.394819","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394819","url":null,"abstract":"Considers the orthogonal scaling functions with the following general oversampling property: for a fixed integer J/spl ges/0 and any f/spl isin/V/sub 0/, f(t)=/spl Sigma//sub n/f(n/(2/sup J/))/spl phi/(2/sup J/t-n). The authors call that an orthogonal scaling function /spl phi/(t) satisfying the above equation has the oversampling property with sampling rate 2/sup -J/ and denote all such scaling functions by S/sub J/. Thus, S/sub 0/ consists of all orthogonal scaling functions with the sampling property and S/sub J/ /spl sub/S/sub J+1/ for J=0, 1, 2, .... The results in Walter (1993) also show that S/sub 0//spl ne/S/sub 1/, i.e., the space of the orthogonal scaling functions with the sampling property is a proper subspace of the one of the orthogonal scaling functions with the oversampling property. Let S/sub e/ and S/sub c/ denote all orthogonal scaling functions with exponential decay and compact support, respectively. The present authors prove that S/sub 0//spl cap/S/sub e/=S/sub J//spl cap/S/sub e/ and S/sub 0//spl cap/S/sub c/=S/sub J//spl cap/S/sub c/.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"314 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132019007","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}
{"title":"On combined synchronization and error control coding","authors":"G. Kabatjanskii, A. Vinck, A. van Wijngaarden","doi":"10.1109/ISIT.1994.394908","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394908","url":null,"abstract":"We investigate the performance of error-control coding in the presence of a special type of errors induced by the bit-stuffing procedure in frame oriented transmission. Certain single substitution errors cause an additional insertion or deletion in the received data frame. We construct a class of systematic codes of variable length that correct single insertion/deletion errors and single substitution errors. The error detection capability of this class of codes is determined by simulation and compared with the traditional CRC-16 error detection code.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132527791","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}
{"title":"Polyphase sequences with good periodic and aperiodic autocorrelations","authors":"P.Z. Fan, M. Darnell, B. Honary","doi":"10.1109/ISIT.1994.394896","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394896","url":null,"abstract":"Polyphase sequences with ideal periodic autocorrelation functions and favorable aperiodic autocorrelation functions are considered. The properties of such polyphase sequences are studied. It is proved that there exist other Golomb (1965) sequences of length L whose maximum out-of-phase value is bounded by /spl radic/(L/c), where c is an positive number.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134061101","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}
{"title":"Polynomial of correctable patterns of product codes","authors":"N. Sendrier","doi":"10.1109/ISIT.1994.394985","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394985","url":null,"abstract":"Product codes have a poor minimum distance, but an efficient low-complexity decoding algorithm. To measure the performance of a decoder, like Reddy-Robinson's for product codes, which decode error patterns beyond half the minimum distance, we use the notion of equivalent diameter of the decoding region [4]. We produce here a bound for the performance of product code which is, for the considered example, far below the simulated performance but still above the performance of known BCH codes with same parameters.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133934382","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}
{"title":"Locally optimum distributed detection of dependent random signals based on ranks","authors":"Rick S. Blum","doi":"10.1109/ISIT.1994.394993","DOIUrl":"https://doi.org/10.1109/ISIT.1994.394993","url":null,"abstract":"Distributed signal detection schemes based on observations which are dependent from sensor to sensor are studied. Cases where weak random signals are observed in possibly non-Gaussian additive noise are considered. The focus is on cases where the sensor tests are based only on the ranks and signs of the observations. We find analytical forms for the best (locally optimum) sensor test statistics for such cases, and we use these to find the best distributed detection schemes for some cases.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131068388","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}
{"title":"A unified approach for construction of rotationally invariant MTCM","authors":"P. Bobrek, V. Jain","doi":"10.1109/ISIT.1994.395059","DOIUrl":"https://doi.org/10.1109/ISIT.1994.395059","url":null,"abstract":"Using the results of Forney's (1988) squaring construction, this paper integrates the rotationally invariant multidimensional trellis coded modulation (MTCM) construction schemes of Wei (1987) and Pietrobon (IEEE Trans. Info. Theory, vol.IT-39, no.3, p. 325-336, 1993), et al. into a highly efficient construction procedure. This procedure can be used to construct QAM or MPSK based MTCM schemes. This paper demonstrates that the squaring construction allows us to deduce the coset representatives of a multidimensional constellation directly from a 2-D partition. A method is given for generating and ordering the coset representatives for rotationally invariant MTCM schemes.<<ETX>>","PeriodicalId":331390,"journal":{"name":"Proceedings of 1994 IEEE International Symposium on Information Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130713676","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}