2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)最新文献_第6页

Coded caching for reducing CSIT-feedback in wireless communications 用于减少无线通信中csit反馈的编码缓存

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447131

Jingjing Zhang, Felix Engelmann, P. Elia

{"title":"Coded caching for reducing CSIT-feedback in wireless communications","authors":"Jingjing Zhang, Felix Engelmann, P. Elia","doi":"10.1109/ALLERTON.2015.7447131","DOIUrl":"https://doi.org/10.1109/ALLERTON.2015.7447131","url":null,"abstract":"The work explores the role of caching content at receiving users for the purpose of reducing the need for feedback in wireless communications. In the K-user broadcast channel (BC), we show how caching, when combined with a rate-splitting broadcast approach, can not only improve performance, but can also reduce the need for channel state information at the transmitter (CSIT), in the sense that the identified cache-aided optimal degrees-of-freedom performance, can in fact be achieved with reduced-quality CSIT. These CSIT savings can be traced back to an inherent relationship between caching, performance, and CSIT; caching improves performance by leveraging multicasting of common information, which automatically reduces the need for CSIT, by virtue of the fact that common information is not a cause of interference. At the same time though, too much multicasting of common information can be detrimental, as it does not utilize existing CSIT. Our caching method builds on the Maddah-Ali and Niesen coded caching scheme, by properly balancing multicast and broadcast opportunities, and by combing caching with rate-splitting communication schemes that are specifically designed to operate under imperfect-quality CSIT. The observed achievable CSIT savings here, are more pronounced for smaller values of K users and N files.","PeriodicalId":112948,"journal":{"name":"2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130600626","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: 39

Active learning from noisy and abstention feedback 从嘈杂和弃权反馈中主动学习

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447165

Songbai Yan, Kamalika Chaudhuri, T. Javidi

引用次数: 12

An information theoretic technique for harnessing attenuation of high spatial frequencies to design ultra-high-density EEG 利用高空间频率衰减的信息理论技术设计超高密度脑电图

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447102

P. Grover, J. Weldon, S. Kelly, Praveen Venkatesh, Haewon Jeong

{"title":"An information theoretic technique for harnessing attenuation of high spatial frequencies to design ultra-high-density EEG","authors":"P. Grover, J. Weldon, S. Kelly, Praveen Venkatesh, Haewon Jeong","doi":"10.1109/ALLERTON.2015.7447102","DOIUrl":"https://doi.org/10.1109/ALLERTON.2015.7447102","url":null,"abstract":"It is widely believed in the clinical and biosciences community that Electroencephalography (EEG) is fundamentally limited in the spatial resolution achieved using a few hundred electrodes. This belief rests on the well known decay of high-spatial frequencies as the signal passes from the brain surface to the scalp surface. These high spatial frequencies carry high spatial resolution information about the source. However, recent experimental work as well as our theoretical and numerical analyses strongly suggest that EEG's resolution could be improved significantly through increased electrode density despite this decay. Somewhat counterintuitively, instead of viewing this decay of spatial frequencies as a detriment to signal quality (which it is), in this work we propose an information-theoretic strategy to harness this decay to reduce circuit area and energy needed for high-resolution signal acquisition. This is made possible by the observation that this spatial-low-pass filtering of the signal as it passes from the brain to the scalp induces large spatial correlations that can be exploited information-theoretically. The proposed techniques are shown in idealized head models to reduce requirements on energy required for sensing by 3×. These results are being applied towards an ongoing project on developing the “Neural Web,” a 10,000 electrode portable EEG system at CMU.","PeriodicalId":112948,"journal":{"name":"2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129749269","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: 5

Finite-state approximations to constrained Markov decision processes with Borel spaces Borel空间约束马尔可夫决策过程的有限状态逼近

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447055

Naci Saldi, S. Yüksel, T. Linder

引用次数: 1

Masking trapped charge in flash memories 掩盖被困在闪存中的电荷

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447072

A. Wachter-Zeh, Eitan Yaakobi

引用次数: 0

Spatially-coupled codes for write-once memories 一次性写入存储器的空间耦合代码

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7446994

Santhosh Kumar, Avinash Vem, K. Narayanan, H. Pfister

引用次数: 5

Finite-SNR regime analysis of the Gaussian wiretap multiple-access channel 高斯窃听多址信道的有限信噪比谱分析

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447020

P. Babaheidarian, Somayeh Salimi, Panos Papadimitratos

{"title":"Finite-SNR regime analysis of the Gaussian wiretap multiple-access channel","authors":"P. Babaheidarian, Somayeh Salimi, Panos Papadimitratos","doi":"10.1109/ALLERTON.2015.7447020","DOIUrl":"https://doi.org/10.1109/ALLERTON.2015.7447020","url":null,"abstract":"In this work, we consider a K-user Gaussian wiretap multiple-access channel (GW-MAC) in which each transmitter has an independent confidential message for the receiver. There is also an external eavesdropper who intercepts the communications. The goal is to transmit the messages reliably while keeping them confidential from the eavesdropper. To accomplish this goal, two different approaches have been proposed in prior works, namely, i.i.d. Gaussian random coding and real alignment. However, the former approach fails at moderate and high SNR regimes as its achievable result does not grow with SNR. On the other hand, while the latter approach gives a promising result at the infinite SNR regime, its extension to the finite-SNR regime is a challenging task. To fill the gap between the performance of the existing approaches, in this work, we establish a new scheme in which, at the receiver's side, it utilizes an extension of the compute-and-forward decoding strategy and at the transmitters' side it exploits lattice alignment, cooperative jamming, and i.i.d. random codes. For the proposed scheme, we derive a new achievable bound on sum secure rate which scales with log(SNR) and hence it outperforms the i.i.d. Gaussian codes in moderate and high SNR regimes. We evaluate the performance of our scheme, both theoretically and numerically. Furthermore, we show that our sum secure rate achieves the optimal sum secure degrees of freedom in the infinite-SNR regime.","PeriodicalId":112948,"journal":{"name":"2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127319777","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: 11

Scheduling, pricing, and efficiency of non-preemptive flexible loads under direct load control 直接负荷控制下非抢占柔性负荷的调度、定价和效率

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447118

Abhishek K. Gupta, R. Jain, R. Rajagopal

引用次数: 10

Distributed information-theoretic biclustering of two memoryless sources 两个无内存源的分布式信息论双聚类

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447035

Georg Pichler, P. Piantanida, G. Matz

引用次数: 6

On pathwise convergence of particle & grid based nonlinear filters: Feller vs conditional regularity 基于粒子和网格的非线性滤波器的路径收敛:Feller与条件正则性

2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton) Pub Date : 2015-09-01 DOI: 10.1109/ALLERTON.2015.7447147

Dionysios S. Kalogerias, A. Petropulu

{"title":"On pathwise convergence of particle & grid based nonlinear filters: Feller vs conditional regularity","authors":"Dionysios S. Kalogerias, A. Petropulu","doi":"10.1109/ALLERTON.2015.7447147","DOIUrl":"https://doi.org/10.1109/ALLERTON.2015.7447147","url":null,"abstract":"We present a theoretical comparison of the state-of-the-art sufficient conditions required for pathwise (almost sure type of) convergence between grid based and particle approximate filters, as well as discuss the implications of these conditions on the specific mode of convergence achieved. Focusing on general Markov processes observed in conditionally Gaussian noise, we have recently shown that a sufficient condition for pathwise convergence of grid based filters is conditional regularity of stochastic kernels. The respective condition for almost sure convergence of particle filters is the well known Feller property. While our analysis shows that the comparison between the afore-mentioned conditions may be indeed inconclusive, we identify a large class of systems for which conditional regularity may hold true, whereas the Feller property cannot. This is achieved through a structural analysis of both sufficient conditions. This work can be summarized in that there provably exist system classes supported by either grid based or particle filtering approximations, but not necessarily by both; for systems supported by both, grid based filters exhibit a theoretical advantage in terms of convergence robustness.","PeriodicalId":112948,"journal":{"name":"2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128628738","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