2008 IEEE International Symposium on Information Theory最新文献_第9页

Quaternary low correlation zone sequence set with flexible parameters 第四系低相关带序列设置，参数灵活

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595496

Jiwoong Jang, Jung-Soo Chung, Jong-Seon No

引用次数: 1

High-rate, single-symbol decodable distributed STBCs for partially-coherent cooperative networks 部分相干合作网络的高速率、单符号可解码的分布式stbc

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595449

D. Sreedhar, A. Chockalingam, B. Rajan

{"title":"High-rate, single-symbol decodable distributed STBCs for partially-coherent cooperative networks","authors":"D. Sreedhar, A. Chockalingam, B. Rajan","doi":"10.1109/ISIT.2008.4595449","DOIUrl":"https://doi.org/10.1109/ISIT.2008.4595449","url":null,"abstract":"Space-time block codes (STBCs) that are single-symbol decodable (SSD) in a co-located multiple antenna setting need not be SSD in a distributed cooperative communication setting. A relay network with N relays and a single source-destination pair is called a partially-coherent relay channel (PCRC) if the destination has perfect channel state information (CSI) of all the channels and the relays have only the phase information of the source-to-relay channels. In our earlier work, we had derived a set of necessary and sufficient conditions for a distributed STBC (DSTBC) to be SSD for a PCRC. Using these conditions, in this paper we show that the possibility of channel phase compensation operation at the relay nodes using partial CSI at the relays increases the possible rate of SSD DSTBCs from 2/N when the relays do not have CSI to 1/2 , which is independent of N. We also show that when a DSTBC is SSD for a PCRC, then arbitrary coordinate interleaving of the in-phase and quadrature-phase components of the variables does not disturb its SSD property. Using this property we are able to construct codes that are SSD and have higher rate than 2/N but giving full diversity only for signal constellations satisfying certain conditions.","PeriodicalId":194674,"journal":{"name":"2008 IEEE International Symposium on Information Theory","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121656939","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

On minimization of entropy functionals under moment constraints 矩约束下熵函数的最小化

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595360

I. Csiszár, F. Matús

引用次数: 15

On the code reverse engineering problem 关于代码逆向工程的问题

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595063

M. Cluzeau, J. Tillich

引用次数: 28

On approximating the rate regions for lossy source coding with coded and uncoded side information 用已编码和未编码的边信息逼近有损源编码的速率区域

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595373

Wei-Hsin Gu, S. Jana, M. Effros

引用次数: 10

Compressed sensing of approximately sparse signals 近似稀疏信号的压缩感知

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595377

M. Stojnic, Weiyu Xu, B. Hassibi

{"title":"Compressed sensing of approximately sparse signals","authors":"M. Stojnic, Weiyu Xu, B. Hassibi","doi":"10.1109/ISIT.2008.4595377","DOIUrl":"https://doi.org/10.1109/ISIT.2008.4595377","url":null,"abstract":"It is well known that compressed sensing problems reduce to solving large under-determined systems of equations. If we choose the compressed measurement matrix according to some appropriate distribution and the signal is sparse enough the l1 optimization can exactly recover the ideally sparse signal with overwhelming probability by Candes, E. and Tao, T., [2], [1]. In the current paper, we will consider the case of the so-called approximately sparse signals. These signals are a generalized version of the ideally sparse signals. Letting the zero valued components of the ideally sparse signals to take the values of certain small magnitude one can construct the approximately sparse signals. Using a different but simple proof technique we show that the claims similar to those of [2] and [1] related to the proportionality of the number of large components of the signals to the number of measurements, hold for approximately sparse signals as well. Furthermore, using the same technique we compute the explicit values of what this proportionality can be if the compressed measurement matrix A has a rotationally invariant distribution of the null-space. We also give the quantitative tradeoff between the signal sparsity and the recovery robustness of the l1 minimization. As it will turn out in an asymptotic case of the number of measurements the threshold result of [1] corresponds to a special case of our result.","PeriodicalId":194674,"journal":{"name":"2008 IEEE International Symposium on Information Theory","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125103312","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: 30

Diversity-multiplexing tradeoff optimal codes for OFDM-based asynchronous cooperative networks 基于ofdm的异步合作网络分集复用权衡最优码

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595278

Hsiao-feng Lu

引用次数: 1

Stochastic optimization approach for entropic image alignment 熵图像对齐的随机优化方法

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595365

Waleed Mohamed, Ying Zhang, A. Hamza, N. Bouguila

引用次数: 8

A spectrum-shaping perspective on cognitive radio: Uncoded primary transmission case 认知无线电的频谱塑造视角:非编码主传输案例

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595205

Wenyi Zhang, U. Mitra

引用次数: 17

Balanced multiple description scalar quantization 平衡多重描述标量量化

2008 IEEE International Symposium on Information Theory Pub Date : 2008-07-06 DOI: 10.1109/ISIT.2008.4595339

Ivana Radulovic, P. Frossard

引用次数: 2