2008 42nd Asilomar Conference on Signals, Systems and Computers最新文献_第3页

Nonlinear decision rules for robust noncoherent integration 鲁棒非相干积分的非线性决策规则

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074461

D. Day

引用次数: 0

Utility-based joint sensor selection and congestion control for task-oriented WSNs 面向任务的wsn基于效用的联合传感器选择与拥塞控制

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074598

H. Rowaihy, Matthew P. Johnson, S. Eswaran, D. Pizzocaro, A. Bar-Noy, T. L. Porta, A. Misra, A. Preece

引用次数: 9

Adaptive downlink OFDMA resource allocation 自适应下行OFDMA资源分配

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074826

I. Wong, B. Evans

{"title":"Adaptive downlink OFDMA resource allocation","authors":"I. Wong, B. Evans","doi":"10.1109/ACSSC.2008.5074826","DOIUrl":"https://doi.org/10.1109/ACSSC.2008.5074826","url":null,"abstract":"Optimizing OFDMA resource allocation with respect to communication performance requires solving a nonlinear mixed-integer programming problem. As a result, many researchers have fallen back on suboptimal heuristic algorithms. In a recent paper, we demonstrate that ergodic rate maximization is possible using a dual optimization framework that results in a practically optimal solution with complexity that is on the order of the number of subcarriers times the number of users. One of the primary disadvantages of considering ergodic rates is the assumption that the channel distribution information (CDI) is perfectly known at the transmitter. Therefore, this paper proposes an adaptive algorithm based on stochastic approximation methods that do not require knowledge of the CDI. This algorithm converges to the optimal solution with probability one, while for each OFDMA symbol, the complexity is on the order of the number of subcarriers times the number of users. There are no iterations in a given OFDMA symbol time; instead, the ldquoiterationsrdquo are actually performed across time (symbols). Simulation results based roughly on a third-generation partnership project, long-term evolution (3GPP-LTE) OFDMA system corroborate our claims.","PeriodicalId":416114,"journal":{"name":"2008 42nd Asilomar Conference on Signals, Systems and Computers","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114933510","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: 21

Low-complexity Doppler compensation in mobile SIMO-OFDM systems 移动SIMO-OFDM系统中的低复杂度多普勒补偿

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074565

M. Schellmann, L. Thiele, V. Jungnickel

引用次数: 5

Rate estimation via maximum likelihood parameter estimation: Application in fast mode-selection within the H.264/AVC 基于最大似然参数估计的速率估计:在H.264/AVC快速模式选择中的应用

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074837

K. Minoo, Truong Q. Nguyen

{"title":"Rate estimation via maximum likelihood parameter estimation: Application in fast mode-selection within the H.264/AVC","authors":"K. Minoo, Truong Q. Nguyen","doi":"10.1109/ACSSC.2008.5074837","DOIUrl":"https://doi.org/10.1109/ACSSC.2008.5074837","url":null,"abstract":"In this paper a novel method to estimate the required bits for representing the coded (quantized) coefficients within a block of natural video sequences is proposed. The proposed method assumes a parameterized probabilistic model for coded data and utilizes a maximum likelihood parameter estimation technique to estimate the model's parameters. The proposed method achieves a robust estimation of the rate based on the estimated probability of each coefficient based on zero order entropy. The rate estimation via maximum likelihood parameter estimation enjoys lower computational complexity, compared to the actual entropy coding of the data. For the purpose of rate estimation we consider a number of options to estimate the parameters of the probabilistic model of coded data. In the context optimal mode selection within the H.264/AVC video codec, the rate estimation method is used to estimate a Lagrangian rate-distortion cost which would be minimized for the optimal mode. The experimental results show that the proposed method considerably reduces the computational complexity while maintaining almost the same rate-distortion coding efficiency compared to mode selection using the actual rate.","PeriodicalId":416114,"journal":{"name":"2008 42nd Asilomar Conference on Signals, Systems and Computers","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116041740","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

Efficient signal acquisition and tracking for a real time GPS/Galileo software receiver 用于实时GPS/Galileo软件接收机的高效信号采集和跟踪

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074797

F. Dovis, M. Fantino, M. Pini

引用次数: 0

A general derivation of Wave-Domain Adaptive Filtering and application to acoustic echo cancellation 波域自适应滤波的一般推导及其在声回波消除中的应用

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074523

H. Buchner, S. Spors

引用次数: 21

Resource allocation in wireless networks with multiple relays 多中继无线网络中的资源分配

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074671

K. Bakanoglu, S. Tomasin, E. Erkip

引用次数: 14

Opportunistic power allocation for point-to-point communication in self-organized networks 自组织网络中点对点通信的机会性权力分配

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074451

M. Bennis, M. Debbah, J. Lilleberg

引用次数: 2

LMMSE channel estimation for MIMO W-CDMA with out-of-cell interference mitigation 具有小区外干扰抑制的MIMO W-CDMA的LMMSE信道估计

2008 42nd Asilomar Conference on Signals, Systems and Computers Pub Date : 2008-10-01 DOI: 10.1109/ACSSC.2008.5074419

R. Tresch, C. Mehlführer, M. Guillaud

引用次数: 6