Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.最新文献_第8页

A Hybrid Early Decision-Probability Propagation Decoding Algorithm for Low-Density Parity-Check Codes 低密度奇偶校验码的混合早期决策概率传播译码算法

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599817

A. Blad, O. Gustafsson, L. Wanhammar

引用次数: 2

Error-Free Arithmetic and Architecture for H.264 H.264的无差错算法和结构

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599843

K. Wahid, V. Dimitrov, Wael Badawy, G. Jullien

引用次数: 4

Capacity of Decode-and-forward Cooperative Links with Full Channel State Information 具有全信道状态信息的译码转发合作链路的容量

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1600019

A. del Coso, C. Ibars

{"title":"Capacity of Decode-and-forward Cooperative Links with Full Channel State Information","authors":"A. del Coso, C. Ibars","doi":"10.1109/ACSSC.2005.1600019","DOIUrl":"https://doi.org/10.1109/ACSSC.2005.1600019","url":null,"abstract":"Cooperative diversity is a novel technique to obtain reliable communications, capacity gains and energy savings by mutual relaying among users of wireless networks. This paper proposes a new multiple-input-multiple-output (MIMO) signal model for half-duplex, decode-and-forward cooperative links with multiple relays and derives the instantaneous capacity for coherent relaying when full channel state information is available at source, destination and relay nodes. At the same time, analyzes the optimum relay selection and power allocation for such relaying scheme, showing that capacity achieving strategy does not make use of all potential relays within the networks. Results on this paper suggest logarithmic growth of the capacity with the total number of network users, i.e. potential relays, and better performance for the low SNR regime. Moreover, they show important spectral efficiency gains for small number of co- operating nodes, making relaying diversity practically attractive. Finally, comparison with space-time coded cooperation depicts the influence of channel state information in cooperative links.","PeriodicalId":326489,"journal":{"name":"Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133931838","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

Efficient Closed-Loop Schemes for MIMO WLAN MIMO无线局域网的高效闭环方案

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1600038

Xiayu Zheng, Yi Jiang, Jian Li

引用次数: 2

Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks 传感器网络中的分布式检测:连接图和小世界网络

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/acssc.2005.1599738

S. Aldosari, J. Moura

{"title":"Distributed Detection in Sensor Networks: Connectivity Graph and Small World Networks","authors":"S. Aldosari, J. Moura","doi":"10.1109/acssc.2005.1599738","DOIUrl":"https://doi.org/10.1109/acssc.2005.1599738","url":null,"abstract":"We study distributed detection in a sensor network where the sensors cooperate by exchanging information to reach a common understanding about the environment. We address two main issues: (1) distributed fusion: how to achieve a global decision without transmitting the information (measurements or local decisions) from all the sensors to a common central location like in parallel architectures; and (2) connectivity graph: what should be the connectivity pattern among the sensors, in other words, with which sensors should each sensor communicate. This is a nontrivial question since it corresponds to designing the structure of a graph to achieve a given goal. For the first issue, we propose an iterative algorithm that fuses the data globally without the need for collecting them at one central location. For the second issue, we present a design methodology based on \"small world\" network engines that leads to connectivity patterns that provide fast convergence to the distributed detection algorithm. Results show that introducing 10% to 30% randomness in the connectivity graph leads to significant improvements over both regular patterns and totally random networks","PeriodicalId":326489,"journal":{"name":"Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130971142","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: 37

An Iterative Interference Canceller for Serially Concatenated Continuous Phase Modulation 串行级联连续相位调制的迭代干扰消除器

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599837

Michael Anderson, Mark C. Reed, G. Borg, G. Borg

引用次数: 5

Cooperative Distributed Multiuser MMSE Relaying in Wireless Ad-Hoc Networks 无线Ad-Hoc网络中的协作分布式多用户MMSE中继

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599923

S. Berger, A. Wittneben

{"title":"Cooperative Distributed Multiuser MMSE Relaying in Wireless Ad-Hoc Networks","authors":"S. Berger, A. Wittneben","doi":"10.1109/ACSSC.2005.1599923","DOIUrl":"https://doi.org/10.1109/ACSSC.2005.1599923","url":null,"abstract":"We consider a wireless ad-hoc network with single antenna nodes under a two-hop traffic pattern. Two system architectures are investigated in this paper: Either linear amplify-and-forward relays (LinRel) or a distributed antenna system with linear processing (LDAS) serve as repeaters. The gain factors of the repeaters are assigned such that the mean squared error (MSE) of the signal at the destinations is minimised (multiuser MMSE relaying). A scalar multiplier γm ∈ C at each destination m allows for received signals that are scaled and rotated versions of the transmitted symbols. We distinguish two cases: 1) The factors are equal for all destinations: γm = γ. 2) An individual factor γm is chosen for each destination m. Multiuser MMSE relaying essentially realizes a distributed spatial multiplexing gain with single antenna nodes as all source/destination pairs can communicate concurrently over the same physical channel. The main contribution of this paper is the derivation of the MMSE gain factors. We evaluate the relaying scheme in comparison to multiuser zero forcing (ZF) (1) and show that it can outperform the latter in terms of average sum rate and diversity gain. Keywords - cooperative relaying, ad-hoc networks, distributed spatial multiplexing, minimum mean squared error (MMSE)","PeriodicalId":326489,"journal":{"name":"Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116904290","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: 94

Characterizing and Estimating Block DCT Image Compression Quantization Parameters 块DCT图像压缩量化参数的表征与估计

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599958

R. Samadani

引用次数: 8

Modular Multiplication of Large Integers on FPGA 基于FPGA的大整数模乘法

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599986

R. Beguenane, Jean-Luc Beuchat, J. Muller, S. Simard

引用次数: 5

Scalable Perceptual Metric for Evaluating Audio Quality 评价音频质量的可扩展感知度量

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI: 10.1109/ACSSC.2005.1599759

Rahul Vanam, C. Creusere

引用次数: 6