Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.最新文献_第8页

Trace balancing for multiuser MIMO downlink transmission 多用户MIMO下行传输的跟踪平衡

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197005

H. Boche, M. Schubert, Eduard Axel Jorswieck

引用次数: 14

A novel model for reverberant signals; robust maximum likelihood localization of real signals based on a sub-Gaussian model 一种新的混响信号模型基于亚高斯模型的实信号鲁棒极大似然定位

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1196986

P. Georgiou, C. Kyriakakis

{"title":"A novel model for reverberant signals; robust maximum likelihood localization of real signals based on a sub-Gaussian model","authors":"P. Georgiou, C. Kyriakakis","doi":"10.1109/ACSSC.2002.1196986","DOIUrl":"https://doi.org/10.1109/ACSSC.2002.1196986","url":null,"abstract":"We present a novel model for signals encountered in reverberant environments using the sub-Gaussian distribution that can describe both the impulsive nature of the signals and their inter-dependence. The proposed system can be viewed as one where the sources are stochastic and Gaussian and the transfer medium is varying in a highly impulsive manner, introducing the sub-Gaussian nature at the receiver or alternatively, the impulsive transformation to the signals can be viewed as part of the source model, creating a multivariate source signal whose components can not be independent, and is of impulsiveness equal to the one of the Cauchy distribution. We formulate the separable maximum likelihood solution to an array signal processing problem based on a derived sub-Gaussian density. We proceed to give both simulations and experimental results of the validity of the algorithm. In the experiments sound signals are played from loudspeakers in a room and localized with a microphone array and it is demonstrated that the localization based on the sub-Gaussian moded significantly outperforms the one based on the traditional Gaussian model.","PeriodicalId":284950,"journal":{"name":"Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134294018","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

A statistical analysis of shape reconstruction from areas of shadows 从阴影区域重建形状的统计分析

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197310

A. Poonawala, P. Milanfar, R. Gardner

引用次数: 7

Performance of space-time codes over a flat-fading channel using a subspace-invariant detector 使用子空间不变检测器的空时码在平坦衰落信道上的性能

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197280

K. W. Forsythe

{"title":"Performance of space-time codes over a flat-fading channel using a subspace-invariant detector","authors":"K. W. Forsythe","doi":"10.1109/ACSSC.2002.1197280","DOIUrl":"https://doi.org/10.1109/ACSSC.2002.1197280","url":null,"abstract":"Multiple-input, multiple-output (MIMO) communications has received considerable attention in recent years. The flat-fading channel, with identical, independently distributed gains between all transmitter and receiver pairs has been one of the MIMO channels studied extensively. Many studies have focused on channel capacity and coding in additive white Gaussian noise. When the noise background has an unknown spatial covariance due to interference, receivers that adapt to the noise background can be more robust. One way of achieving robustness builds invariances into the detector, creating a channel model that incorporates adaptive beamforming naturally into signal detection and coding. In the particular case of frequency-hopped waveforms with random fading and hop to hop white noise, the capacity of this channel can be evaluated. A family of space-time codes for the invariant detector is investigated and its performance compared with the derived capacity bounds. Theoretical predictions of performance in interference and in different fading conditions are presented and compared with simulation results for a concatenated coding architecture involving space-time inner codes and low density parity-check outer code.","PeriodicalId":284950,"journal":{"name":"Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129181290","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: 4

Iterative constrained penalized likelihood estimation of parameters for CDMA CDMA参数的迭代约束惩罚似然估计

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197023

E. Khan, D. Slock

引用次数: 2

OFDM space-time trellis-coded MIMO systems with experimental results OFDM空时栅格编码MIMO系统及其实验结果

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1196999

J. Liberti, A. Triolo, T.R. Hoerning

引用次数: 1

Iterative decoding schemes for source and joint source-channel coding of correlated sources 相关信源的迭代译码方案和联合信源信道编码

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197186

J. Garcia-Frías, W. Zhong, Y. Zhao

引用次数: 24

Adaptive modulation for multiple antenna channels 多天线信道自适应调制

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197237

June Chul Roh, B. Rao

引用次数: 23

Soft vs. hard antenna selection based on the minimum distance for MIMO systems 根据MIMO系统的最小距离选择软天线和硬天线

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197003

L. Collin, O. Berder, P. Rostaing, Gilles Burel

引用次数: 5

Digital DS-CDMA receivers working below the chip rate 数字DS-CDMA接收机工作在芯片速率以下

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002. Pub Date : 2002-11-03 DOI: 10.1109/ACSSC.2002.1197022

I. Maravic, M. Vetterli

引用次数: 7