2014 Information Theory and Applications Workshop (ITA)最新文献_第2页

Distributed storage systems with secure and exact repair — New results 分布式存储系统与安全和精确的维修-新成果

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804226

R. Tandon, Saidhiraj Amuru, T. Clancy, R. Buehrer

引用次数: 5

Performance improvement with decoder output smoothing in differential predictive coding 差分预测编码中解码器输出平滑的性能改进

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804266

J. Gibson, Malavika Bhaskaranand

引用次数: 0

Domain adaptation methods for robust pattern recognition 鲁棒模式识别的领域自适应方法

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804227

D. A. Shaw, R. Chellappa

引用次数: 1

Generalized weights and bounds for error probability over erasure channels 擦除信道上错误概率的广义权值和界

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804237

Leandro Cruvinel Lemes, Marcelo Firer

引用次数: 7

LDPC code designs based on √I matrices 基于√I矩阵的LDPC代码设计

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804247

S. G. Srinivasa

引用次数: 0

Neural shaping with joint optimization of controller and plant under restricted dynamics 在受限动力学条件下，基于控制器和被控对象联合优化的神经整形

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804254

Bryan D. He, L. Srinivasan

{"title":"Neural shaping with joint optimization of controller and plant under restricted dynamics","authors":"Bryan D. He, L. Srinivasan","doi":"10.1109/ITA.2014.6804254","DOIUrl":"https://doi.org/10.1109/ITA.2014.6804254","url":null,"abstract":"The prototypical brain-computer interface (BCI) algorithm translates brain activity into changes in the states of a computer program, for typing or cursor movement. Most approaches use neural decoding which learns how the user has encoded their intent in their noisy neural signals. Recent adaptive decoders for cursor movement improved BCI performance by modeling the user as a feedback controller; when this model accounts for adaptive control, the neural decoder is termed co-adaptive. This recent collection of control-inspired neural decoding strategies disregards a major antecedent conceptual realization, whereby the user could be induced to adopt an encoding strategy (control policy) such that the encoder-decoder pair (or equivalently, controller-plant pair) is optimal under a desired cost function. We call this alternate conceptual approach neural shaping, in contradistinction to neural decoding. Previous work illuminated the general form of optimal controller-plant pair under a cost representing information gain. For BCI applications requiring the user to issue discrete-valued commands, the information-gain-optimal pair, based on the posterior matching scheme, can be user-friendly. In this paper, we discuss the application of neural shaping to cursor control with continuous-valued states based on continuous-valued user commands. We examine the problem of jointly optimizing controller and plant under quadratic expected cost and restricted linear plant dynamics. This simplification reduces joint controller-plant selection to a static optimization problem, similar to approaches in structural engineering and other areas. This perspective suggests that recent BCI approaches that alternate between adaptive neural decoders and static neural decoders could be local Pareto-optimal, representing a suboptimal iterative-type solution to the optimal joint controller-plant problem.","PeriodicalId":338302,"journal":{"name":"2014 Information Theory and Applications Workshop (ITA)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116866234","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

Massive MIMO and inter-tier interference coordination 大规模MIMO与层间干扰协调

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804251

Ansuman Adhikary, E. A. Safadi, G. Caire

{"title":"Massive MIMO and inter-tier interference coordination","authors":"Ansuman Adhikary, E. A. Safadi, G. Caire","doi":"10.1109/ITA.2014.6804251","DOIUrl":"https://doi.org/10.1109/ITA.2014.6804251","url":null,"abstract":"We study the performance of a two-tier system where a large number of small cells is deployed under a macro-cellular “umbrella”. The macro-cellular tier provides coverage and handles mobile users, while the small cell tier provides high rate locally to nomadic users. While the standard approach consists of operating the two tiers in different frequency bands, for various reasons (e.g., lack of licensed spectrum), it may be useful to operate both tiers in the whole available spectrum. Hence, we consider schemes for inter-tier interference coordination that do not assume any explicit data or channel state information sharing between tiers. In particular, we consider co-channel TDD and reverse TDD schemes, when the macro (tier-1) base station has a very large number of antennas and the tier-2 base stations have a moderately large number of antennas. We show that by exploiting the spatial directionality of the channel vectors, very efficient inter-tier interference management can be obtained with relatively low complexity. Our approach consists of a sort of “spatial blanking” of certain angle-of-departure of the tier-1 base station at given scheduled time-frequency slots, in order to create transmission opportunities for the corresponding tier-2 small cells. In particular, such “spatial blanking” is significantly more efficient than isotropic slot blanking (enhanced Inter-Cell Interference Coordination, eICIC) currently proposed in LTE standardization.","PeriodicalId":338302,"journal":{"name":"2014 Information Theory and Applications Workshop (ITA)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116144440","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: 27

Distributed massive MIMO: Algorithms, architectures and concept systems 分布式大规模MIMO:算法、架构和概念系统

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804225

Upamanyu Madhow, D. Brown, S. Dasgupta, R. Mudumbai

{"title":"Distributed massive MIMO: Algorithms, architectures and concept systems","authors":"Upamanyu Madhow, D. Brown, S. Dasgupta, R. Mudumbai","doi":"10.1109/ITA.2014.6804225","DOIUrl":"https://doi.org/10.1109/ITA.2014.6804225","url":null,"abstract":"Making MIMO truly “massive” involves liberating it from the shackles of form factor constraints, by allowing arbitrarily large groups of neighboring nodes to opportunistically form virtual antenna arrays for both transmission and reception. Moving such distributed MIMO (DMIMO) systems from the realm of information theory to practice requires synchronization of the cooperating nodes at multiple levels. We are interested in all-wireless systems which are severely constrained in the amount of information that can be exchanged among the cooperating nodes, in contrast to recent proposals in massive MIMO (co-located antennas) or base station cooperation (which relies on a high-speed wired backhaul). The goal of this paper is to point out some of the research issues unique to scaling up such DMIMO systems. We briefly review the significant technical progress in design and demonstration over the past few years, and describe a research agenda for the next few years based on fundamental questions in attaining the “distributed coherence” required to realize concept systems such as DMIMO communication at large carrier wavelengths (e.g., white space frequencies for which standard antenna arrays are too bulky) and distributed 911 for emergency and rescue scenarios.","PeriodicalId":338302,"journal":{"name":"2014 Information Theory and Applications Workshop (ITA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128015736","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: 56

Fair resource allocation for OFDMA multi-cell networks OFDMA多小区网络的公平资源分配

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804235

Wuwen Li, G. Pottie

引用次数: 2

User association and load balancing for cellular massive MIMO 蜂窝大规模MIMO的用户关联与负载均衡

2014 Information Theory and Applications Workshop (ITA) Pub Date : 2014-04-24 DOI: 10.1109/ITA.2014.6804284

Dilip Bethanabhotla, Ozgun Y. Bursalioglu, H. Papadopoulos, G. Caire

引用次数: 85