IEEE Trans. Inf. Theory最新文献_第4页

A lower bound for the detection/isolation delay in a class of sequential tests 一类连续测试中检测/隔离延迟的下界

IEEE Trans. Inf. Theory Pub Date : 2003-11-01 DOI: 10.1109/TIT.2003.818398

I. Nikiforov

引用次数: 45

Analysis of the iterative decoding of LDPC and product codes using the Gaussian approximation 基于高斯近似的LDPC码和积码迭代译码分析

IEEE Trans. Inf. Theory Pub Date : 2003-11-01 DOI: 10.1109/TIT.2003.819335

F. Lehmann, G. M. Maggio

引用次数: 58

On the linear complexity of nonlinearly filtered PN-sequences 非线性滤波pn序列的线性复杂度

IEEE Trans. Inf. Theory Pub Date : 2003-11-01 DOI: 10.1109/TIT.2003.818400

N. Kolokotronis, N. Kalouptsidis

引用次数: 30

Capacity of MIMO systems with semicorrelated flat fading 半相关平坦衰落MIMO系统的容量

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817472

Peter J. Smith, Sumit Roy, M. Shafi

引用次数: 210

Noncoherent sequence detection of differential space-time modulatio 差分空时调制的非相干序列检测

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817452

Cong Ling, K. H. Li, A. Kot

引用次数: 0

Upper bounds of rates of complex orthogonal space-time block code 复正交空时分组码的速率上界

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817830

Haiquan Wang, X. Xia

{"title":"Upper bounds of rates of complex orthogonal space-time block code","authors":"Haiquan Wang, X. Xia","doi":"10.1109/TIT.2003.817830","DOIUrl":"https://doi.org/10.1109/TIT.2003.817830","url":null,"abstract":"We derive some upper bounds of the rates of (generalized) complex orthogonal space-time block codes. We first present some new properties of complex orthogonal designs and then show that the rates of complex orthogonal space-time block codes for more than two transmit antennas are upper-bounded by 3/4. We show that the rates of generalized complex orthogonal space-time block codes for more than two transmit antennas are upper-bounded by 4/5, where the norms of column vectors may not be necessarily the same. We also present another upper bound under a certain condition. For a (generalized) complex orthogonal design, its variables are not restricted to any alphabet sets but are on the whole complex plane. A (generalized) complex orthogonal design with variables over some alphabet sets on the complex plane is also considered. We obtain a condition on the alphabet sets such that a (generalized) complex orthogonal design with variables over these alphabet sets is also a conventional (generalized) complex orthogonal design and, therefore, the above upper bounds on its rate also hold. We show that commonly used quadrature amplitude modulation (QAM) constellations of sizes above 4 satisfy this condition.","PeriodicalId":13250,"journal":{"name":"IEEE Trans. Inf. Theory","volume":"41 1","pages":"2788-2796"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76425931","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: 225

Optimizing multiple-input single-output (MISO) communication systems with general Gaussian channels: nontrivial covariance and nonzero mean 具有一般高斯信道的多输入单输出通信系统优化:非平凡协方差和非零均值

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817464

A. L. Moustakas, S. Simon

{"title":"Optimizing multiple-input single-output (MISO) communication systems with general Gaussian channels: nontrivial covariance and nonzero mean","authors":"A. L. Moustakas, S. Simon","doi":"10.1109/TIT.2003.817464","DOIUrl":"https://doi.org/10.1109/TIT.2003.817464","url":null,"abstract":"We consider a narrow-band point-to-point communication system with many (input) transmitters and a single (output) receiver (i.e., a multiple-input single output (MISO) system). We assume the receiver has perfect knowledge of the channel but the transmitter only knows the channel distribution. We focus on two canonical classes of Gaussian channel models: (a) the channel has zero mean with a fixed covariance matrix and (b) the channel has nonzero mean with covariance matrix proportional to the identity. In both cases, we are able to derive simple analytic expressions for the ergodic average and the cumulative distribution function (c.d.f.) of the mutual information for arbitrary input (transmission) signal covariance. With minimal numerical effort, we then determine the ergodic and outage capacities and the corresponding capacity-achieving input signal covariances. Interestingly, we find that the optimal signal covariances for the ergodic and outage cases have very different behavior. In particular, under certain conditions, the outage capacity optimal covariance is a discontinuous function of the parameters describing the channel (such as strength of the correlations or the nonzero mean of the channel).","PeriodicalId":13250,"journal":{"name":"IEEE Trans. Inf. Theory","volume":"21 11 1","pages":"2770-2780"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77296204","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: 76

Maximum rank distance codes as space-time codes 最大等级距离码作为空时码

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.818023

P. Lusina, E. Gabidulin, M. Bossert

引用次数: 113

Rate-diversity tradeoff of space-time codes with fixed alphabet and optimal constructions for PSK modulation PSK调制中固定字母空时码的速率分集权衡与最优结构

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817469

Hsiao-feng Lu, P. V. Kumar

引用次数: 100

The pseudo-Wishart distribution and its application to MIMO systems 伪wishart分布及其在MIMO系统中的应用

IEEE Trans. Inf. Theory Pub Date : 2003-10-01 DOI: 10.1109/TIT.2003.817465

R. Mallik

{"title":"The pseudo-Wishart distribution and its application to MIMO systems","authors":"R. Mallik","doi":"10.1109/TIT.2003.817465","DOIUrl":"https://doi.org/10.1109/TIT.2003.817465","url":null,"abstract":"The pseudo-Wishart distribution arises when a Hermitian matrix generated from a complex Gaussian ensemble is not full-rank. It plays an important role in the analysis of communication systems using diversity in Rayleigh fading. However, it has not been extensively studied like the Wishart distribution. Here, we derive some key aspects of the complex pseudo-Wishart distribution. Pseudo-Wishart and Wishart distributions are treated as special forms of a Wishart-type distribution of a random Hermitian matrix generated from independent zero-mean complex Gaussian vectors with arbitrary covariance matrices. Using a linear algebraic technique, we derive an expression for the probability density function (p.d.f.) of a complex pseudo-Wishart distributed matrix, both for the independent and identically distributed (i.i.d.) and non-i.i.d. Gaussian ensembles. We then analyze the pseudo-Wishart distribution of a rank-one Hermitian matrix. The distribution of eigenvalues of Wishart and pseudo-Wishart matrices is next considered. For a matrix generated from an i.i.d. Gaussian ensemble, we obtain an expression for the characteristic function (cf) of eigenvalues in terms of a sum of determinants. We present applications of these results to the analysis of multiple-input multiple-output (MIMO) systems. The purpose of this work is to make researchers aware of the pseudo-Wishart distribution and its implication in the case of MIMO systems in Rayleigh fading, where the transmitted signals are independent but the received signals are correlated. The results obtained provide a powerful analytical tool for the study of MIMO systems with correlated received signals, like systems using diversity and optimum combining, space-time systems, and multiple-antenna systems.","PeriodicalId":13250,"journal":{"name":"IEEE Trans. Inf. Theory","volume":"66 1","pages":"2761-2769"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83253465","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: 77