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Mitsubishi Electric Research Laboratories
(95 results)-
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The Light-Path Less Traveled
April 5, 2011, 12:00am PDT
This paper extends classical object pose and relative camera motion estimation algorithms for imaging sensors sampling the scene through light-paths. Many algorithms in multi-view geometry assume...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Achieving Real-Time Object Detection and Tracking Under Extreme Conditions
December 4, 2008, 12:00am PST
Object tracking is one the most important tasks in computer vision. In video surveillance, it is used to understand movement patterns of people to uncover suspicious events. It is a key component...
Provided by Mitsubishi Electric
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White Papers
A Cluster-Based Analysis of Outdoor-to-Indoor Office MIMO Measurements at 5.2 GHz
September 1, 2007, 12:00am PDT
In this paper, the authors present a cluster based analysis of an outdoor-to-indoor Multiple-Input Multiple-Output (MIMO) measurement campaign, and extract model parameters for the COST273 channel...
Provided by Mitsubishi Electric
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White Papers
Ambient Intelligence as the Bridge to the Future of Pervasive Computing
December 1, 2008, 12:00am PST
One prediction about this future of pervasive technology is that people will carry the tools needed to interface with technological resources sprinkled throughout the environment. A problem with...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Secret Key Sharing and Rateless Coding for Practical Secure Wireless Transmission
August 1, 2011, 12:00am PDT
The authors discuss a secure wireless communication scheme, focusing on designing two major components: the key generation and the coding scheme. To achieve high key matching rate, they propose a...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Experiments on Wireless Power Transfer With Metamaterials
June 1, 2011, 12:00am PDT
In this paper, the authors propose the use of metamaterials to enhance the evanescent wave coupling and improve the transfer efficiency of a wireless power transfer system based on coupled...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Resource Block Embedding: Towards High Throughput Broadband Multimedia Wireless Networks
June 1, 2011, 12:00am PDT
For Orthogonal Frequency-Division Multiplexing (OFDM) based wireless systems, a Resource Block (RB) in a two-dimensional time-frequency plane is defined as a data block spanned by a number of...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Pilot Matrix Design for Estimating Cascaded Channels in Two-Hop MIMO Amplify-and-Forward Relay Systems
June 1, 2011, 12:00am PDT
In this paper, the authors consider a two-hop Multi-Input-Multi-Output (MIMO) Amplify-and-Forward (AF) relay system consisting of a Source Node (SN), a Destination Node (DN), and a Relay Node (RN)...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Reduced-Rate OFDM Transmission With Statistics-Based ICI Mitigation
June 1, 2011, 12:00am PDT
In this paper, the authors develop a general reduced-rate Orthogonal Frequency Division Multiplexing (OFDM) transmission scheme for Inter-sub-Channel Interference (ICI) mitigation in a...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Proposal of Generating and Customizing Method to Construct 3D GUI for SCADA
May 12, 2008, 12:00am PDT
Recently, high-quality 3D graphics has become available at a low cost. A number of attempts to visualize information of a very large system by using 3D graphics. Although development of a 3D...
Provided by Mitsubishi Electric
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White Papers
Decentralized Attribute-Based Signatures
December 22, 2011, 12:00am PST
In this paper, the authors present the first Decentralized Multi-Authority Attribute-Based Signature (DMA-ABS) scheme, in which no central authority and no trusted setup are required. The proposed...
Provided by Mitsubishi Electric
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White Papers
Efficient Attribute-Based Signatures for Non-Monotone Predicates in the Standard Model
December 22, 2011, 12:00am PST
This paper presents a fully secure (adaptive-predicate unforgeable and private) Attribute-Based Signature (ABS) scheme in the standard model. The security of the proposed ABS scheme is proven...
Provided by Mitsubishi Electric
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White Papers
Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption
January 27, 2012, 12:00am PST
In this paper, the authors present two Non-zero Inner-Product Encryption (NIPE) schemes that are adaptively secure under a standard assumption, the Decisional LINear (DLIN) assumption, in the...
Provided by Mitsubishi Electric
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White Papers
On the Indifferentiable Hash Functions in the Multi-Stage Security Games
February 8, 2012, 12:00am PST
It had been widely believed that the indifferentiability framework ensures composition in any security game. However, Ristenpart, Shacham, and Shrimpton (EUROCRYPT 2011) demonstrated that for some...
Provided by Mitsubishi Electric
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White Papers
Energy-Efficient Decentralized Routing With Localized Cooperation Suitable for Fast Fading
September 28, 2007, 12:00am PDT
The authors consider the joint optimization of the route and the physical layer in cooperative wireless networks with fast fading. In fast fading channels where the channel states change from one...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Fundamental Limits and Improved Algorithms for Linea Least-Squares Wireless Position Estimation
September 1, 2010, 12:00am PDT
In this paper, theoretical lower bounds on performance of Linear Least-Squares (LLS) position estimators are obtained, and performance differences between LLS and Nonlinear Least-Squares (NLS)...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Effect of Transmission Parameters on Efficiency and Reliability of V2V Networks
December 1, 2010, 12:00am PST
Vehicle-to-vehicle communications is essential to create cooperative awareness amongst vehicles, improve roadway safety and roadway capacity, and reduce green house gas emissions. As vehicle...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Safety Message Transmission in Vehicular Communication Networks
December 1, 2010, 12:00am PST
Emerging vehicular safety applications require low latency communications and reliable packet dissemination for life saving safety messages. Significant developments have taken place over the past...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Location Aware Fast Handover Between WiMax and WiFi Networks
December 1, 2010, 12:00am PST
Next generation mobile communications will rely on integrated networks consisting of multiple wireless access technologies such as WiFi, WiMAX, GSM and UMTS. With variety of access technologies,...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Performance Analysis of Joint Opportunistic Scheduling and Receiver Design for MIMO-SDMA Downlink
January 1, 2011, 12:00am PST
In this paper, the sum-rate performance of Joint Opportunistic Scheduling and Receiver Design (JOSRD) is analyzed for multiuser Multiple-Input-Multiple Output (MIMO) Space-Division Multiple Access...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
An Information-Theoretic Analysis of Revocability and Reusability in Secure Biometrics
February 1, 2011, 12:00am PST
Secure biometric systems are designed to allow authentication without requiring a reference biometric sample to be stored in the clear at the access control device. Instead, a template extracted...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Achieving Near-Exponential Diversity on Uncoded Low-Dimensional MIMO, Multi-User and Multi-Carrie Systems Without Transmitter CSI
April 1, 2011, 12:00am PDT
It is well-known that for Single-Input and Single-Output (SISO) narrow-band transmission on frequency-flat fading channels, uncoded communication with only Receiver Channel State Information...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Capacity, MSE and Secrecy Analysis of Linear Block Precoding for Distributed Antenna Systems in Multi-User Frequency-Selective Fading Channels
March 1, 2011, 12:00am PST
Block transmission with cyclic prefix is a promising technique to realize high-speed data rates in frequency-selective fading channels. Many popular linear precoding schemes, including Orthogonal...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Privacy Preserving Probabilistic Inference With Hidden Markov Models
May 1, 2011, 12:00am PDT
Alice possesses a sample of private data from which she wishes to obtain some probabilistic inference. Bob possesses Hidden Markov Models (HMMs) for this purpose, but a person wants the model...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Fully Secure Functional Encryption With General Relations From the Decisional Linear Assumption
November 5, 2010, 12:00am PDT
This paper presents a fully secure functional encryption scheme for a wide class of relations, that are specified by non-monotone access structures combined with inner-product relations. The...
Provided by Mitsubishi Electric
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White Papers
A WiFi Measurement in 802.11g Networks
February 10, 2010, 12:00am PST
The hidden terminal problem is closely related to the Transmission Range (TX Range), Carrier Sensing Range (CS Range) and InterFerence Range (IF Range) of stations in wireless local area networks...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Relay-Coded Multi-User Cooperative Communications for Uplink LTE-Advanced 4G Systems
December 1, 2009, 12:00am PST
A technical consensus for future LTE-advanced 4G systems is the adoption of Relay Stations (RS) for letter link performance. While study in relay systems is often carried out for individual users...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Frame Structure Design for IEEE 802.16j Mobile Multihop Relay (MMR) Networks
September 1, 2008, 12:00am PDT
Frame structure is critical to an IEEE 802.16e OFDMA network, as it governs the fundamental channel access in both time and frequency domain. The framework structure design is tremendously...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Adaptive Antenna Selection at Mobile Stations for SDMA in WiMAX Networks
September 1, 2009, 12:00am PDT
The IEEE 802.16/WiMAX standards has fully embraced multi-antenna technology and can, thus, deliver robust performance and high transmission rates. Nevertheless, due to its inherent cost concerns,...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Proposal of Generating and Customizing Method to Construct 3D GUI for SCADA
May 12, 2008, 12:00am PDT
Recently, high-quality 3D graphics has become available at a low cost. A number of attempts to visualize information of a very large system by using 3D graphics. Although development of a 3D...
Provided by Mitsubishi Electric
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