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Mitsubishi Electric Research Laboratories
(61 results)-
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
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
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
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
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
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
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
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
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
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
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
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
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
Off-Grid Portable EV Charging Network Management With Dynamic Energy Pricing
November 1, 2010, 12:00am PDT
With emerging of Electric Vehicles (EV), Portable Charging Stations (PCSs) will play a key role to manage EV charging operations off-grid. Otherwise, charging hundreds of EVs at random locations...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Joint Carrier Frequency Offset and Channel Estimation for Uplink MIMO-OFDMA Systems Using Parallel Schmidt Rao-Blackwellized Particle Filters
November 1, 2010, 12:00am PDT
Joint Carrier Frequency Offset (CFO) and channel estimation for uplink MIMO-OFDMA systems over time-varying channels is investigated. To cope with the prohibitive computational complexity involved...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Electric Vehicles Network With Nomadic Portable Charging Stations
September 1, 2010, 12:00am PDT
A novel concept of portable charging station networks to serve Electric Vehicles is described. An optimum charging station deployment method is explained, and its performance has been simulated...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
P2Pi: A Minimal Solution for Registration of 3D Points to 3D Planes
November 1, 2010, 12:00am PDT
This paper presents a class of minimal solutions for the 3D-to-3D registration problem in which the sensor data are 3D points and the corresponding object data are 3D planes. In order to compare...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Wireless Power Transmission Efficiency Enhancement With Metamaterials
September 1, 2010, 12:00am PDT
In this paper, a wireless power transfer system with magnetically coupled resonators is studied. The idea to use metamaterials to enhance the coupling coefficient and the transfer efficiency is...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
The Relay Selection and Transmission Trade-Off in Cooperative Communication Systems
August 1, 2010, 12:00am PDT
A common and practical paradigm in cooperative communication systems is the use of a dynamically selected best relay to decode and forward information from a source to a destination. Such systems...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
A Modified Beacon-Enabled IEEE 802.15.4 MAC Emergency Response Applications
July 1, 2010, 12:00am PDT
IEEE 802.15.4 specification for MAC and PHY offers a standard for general purpose wireless sensor networks. The TG4e of IEEE 802.15 is currently engaged in defining a specification particularly...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
A Synchronization Design for UWB-Based Wireless Multimedia Systems
June 1, 2010, 12:00am PDT
Multi-Band Orthogonal Frequency-Division Multiplexing (MB-OFDM) Ultra-WideBand (UWB) technology offers large throughput, low latency and has been adopted in wireless Audio/Video (AV) network...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Breaking the Interactive Bottleneck in Multi-Class Classification With Active Selection and Binary Feedback
July 1, 2010, 12:00am PDT
Multi-class classification schemes typically require human input in the form of precise category names or numbers for each example to be annotated - providing this can be impractical for the user...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Morphable Reflectance Fields for Enhancing Face Recognition
July 1, 2010, 12:00am PDT
In this paper, the authors present a novel framework to address the confounding effects of illumination variation in face recognition. By augmenting the gallery set with realistically relit...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
RelCom: Relational Combinatorics Features for Rapid Object Detection
July 1, 2010, 12:00am PDT
The authors present a simple yet elegant feature, RelCom, and a boosted selection method to achieve a very low complexity object detector. They generate combinations of low-level feature...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Clustering Based Fractional Frequency Reuse and Fair Resource Allocation in Multi-Cell Networks
July 1, 2010, 12:00am PDT
Fractional Frequency Reuse (FFR), using different frequency reuse factors for cell center and edge regions, is able to effectively improve spectrum efficiency in multi-cell OFDMA networks....
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Subcarrier Spreading for ICI Mitigation in OFDM/OFDMA Systems
July 1, 2010, 12:00am PDT
Two of the major challenges facing OFDM/OFDMA systems are their sensitivity to frequency selective fading and ICI due to CFO or Doppler shift, especially when the subcarrier spacing becomes...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Adaptive Probabilistic Decision-Based Energy Saving Strategy for the Next Generation Cellular Wireless Systems
July 1, 2010, 12:00am PDT
As Mobile Stations (MSs) in the next generation cellular wireless systems will more frequently operate on multiple applications, such as web browsing, VoIP, online video etc., energy saving...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
A Complete Characterization of an Optimal Timer Based Scheme
July 1, 2010, 12:00am PDT
Timer-based mechanisms are often used in several wireless systems to help a given (sink) node select the best helper node among many available nodes. Specifically, a node transmits a packet when...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
RPL Based Routing for Advanced Metering Infrastructure in Smart Grid
July 1, 2010, 12:00am PDT
In this paper, the authors present a routing protocol design and implementation for the Advanced Metering Infrastructure (AMI) in Smart Grid. The proposed protocol implementation is based on the...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Multi-Class Batch-Mode Active Learning for Image Classification
July 1, 2010, 12:00am PDT
Accurate image classification is crucial in many robotics and surveillance applications - for example, a vision system on a robot needs to accurately recognize the objects seen by its camera....
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Multi-Antenna Analog Network Coding for Multi-Hop Wireless Networks
June 1, 2010, 12:00am PDT
This paper proposes a Minimum Mean-Square-Error Bi-directional Amplify-and-Forward (MMSEBAF) relaying protocol for multi-hop wireless networks employing multi-antenna relays. MMSEBAF is a...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Differentiable Spectrum Partition for Fractional Frequency Reuse in Multi-Cell OFDMA Networks
June 1, 2010, 12:00am PDT
To mitigate Inter-Cell Interference (ICI) and achieve higher spectrum efficiency, Fractional Frequency Reuse (FFR) has been widely adopted by the next generation wireless systems, wherein...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
QoS Harmonization for Home Networks
April 1, 2010, 12:00am PDT
A modern home could contain a large variety of devices and all of them should be able to work together so as to bring a rich experience to the users. Quality of Service (QoS) is a critical factor...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Privacy and Security of Features Extracted From Minutiae Aggregates
March 1, 2010, 12:00am PST
This paper describes the authors' recent analysis on the security and privacy of biometric feature vectors obtained from fingerprint minutiae. A large number of contiguous regions (cuboids) are...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Hiding Information Inside Structured Shapes
March 1, 2010, 12:00am PST
This paper describes a new technique for embedding a message within structured shapes. It is desired that one changes in the shape owing to the embedded message are invisible to a casual observer...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Optimized Opportunistic Multicast Scheduling (OMS) Over Wireless Cellular Networks
March 1, 2010, 12:00am PST
Optimized Opportunistic Multicast Scheduling (OMS) is studied for cellular networks, where the problem of efficiently transmitting a common set of fountain-encoded data from a single base station...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
QRD-Based Precoded MIMO-OFDM Systems With Reduced Feedback
March 1, 2010, 12:00am PST
QR Decomposition (QRD)-based precoded MIMO-OFDM systems with reduced feedback are proposed to convert the MIMO-OFDM channel into layered subchannels. QRD-M is further combined with either Singular...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Alignment and Bit Extraction for Secure Fingerprint Biometrics
February 1, 2010, 12:00am PST
Security of biometric templates stored in a system is important because a stolen template can compromise system security as well as user privacy. Therefore, a number of secure biometrics schemes...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
TV Architecture Supporting Multiple 3D Services
March 1, 2010, 12:00am PST
This paper describes changes to the television architecture to support 3D video, with emphasis on the receiver and display processor. It is expected that multiple 3D services will be available in...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Performance Analysis of Beacon-Enabled IEEE 802.15.4 MAC for Emergency Response Applications
December 1, 2009, 12:00am PST
IEEE 802.15.4 standard provides a viable MAC and PHY specification for wireless sensor networks. Performance evaluation of these networks has been reported in literature. Previous works focus...
Provided by Mitsubishi Electric Research Laboratories
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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
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
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
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
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
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
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
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
Fast Handover Between WiMAX and WiFi Networks in Vehicular Environment
November 1, 2009, 12:00am PDT
Fast handover is crucial to provide the best services to mobile users in vehicular environment. WiMAX and WiFi support mobility in vehicular speed. However, WiMAX and WiFi network entry processes...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Secure Function Evaluation Based on Secret Sharing and Homomorphic Encryption
December 1, 2009, 12:00am PST
Consider the following problem in secure multiparty computation: Alice and Bob posses integers X and y respectively. Charlie is a researcher who would like to compute the value of some function...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Parametric Compression of Rank-1 Analog Feedback in MIMO-OFDM
December 1, 2009, 12:00am PST
The authors consider the problem of Channel State Information (CSI) transmission on a fast feedback link for a Multiuser-MIMO OFDM system. They compare codebook based feedback with analog based...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Codebook-Based Quantized MIMO Feedback for Closed-Loop Transmit Precoding
December 1, 2009, 12:00am PST
Advanced quantization schemes are proposed for closed-loop transmits precoding over correlated Multiple-Input Multiple-Output (MIMO) channels in this work. Unlike the conventional schemes that...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Object Detection Via Boosted Deformable Features
December 1, 2009, 12:00am PST
It is a common practice to model an object for detection tasks as a boosted ensemble of many models built on features of the object. In this paper, features are defined as subregions with fixed...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Secure Distortion Computation Among Untrusting Parties Using Homomorphic Encryption
December 1, 2009, 12:00am PST
The process of comparing two signals to determine whether they are similar or different is a key operation in numerous electrical engineering systems. For instance, in image processing, one may be...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Error Control Strategies for WiMAX Multi-Hop Relay Networks
December 1, 2009, 12:00am PST
Next generation wireless system such as advanced WiMAX (i.e. IEEE802.16m) and LTE advanced will fully embrace multi-hop relay architecture. The conventional Automatic Repeat reQuest (ARQ) and the...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Medium Access Control Signaling for Reliable Spectrum Agile Radios
December 1, 2009, 12:00am PST
The authors address the problem of collaborative sensing in cognitive radios. In a cognitive radio network, all the nodes may sense the spectrum simultaneously. They should then exchange their...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Unified Analysis of Linear Block Precoding for Distributed Antenna Systems
December 1, 2009, 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
-
White Papers
Opportunistic Cell Edge Selection in Multi-Cell OFDMA Networks
December 1, 2009, 12:00am PST
The authors propose an intercell downlink Orthogonal Frequency Division Multiple Access (OFDMA) scheduling technique in a sectorized cellular network. Adjacent sectors from neighboring cells form...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
A New Coupling Channel Estimator for Cross-Talk Cancellation at Wireless Relay Stations
December 1, 2009, 12:00am PST
In this paper, the authors are concerned with cross-talk interference from the transmit to the receive antenna of a wireless Channel-Reuse-Relay-Station (CRRS) that forwards signals over the same...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Multi-User Cooperative Communications With Relay-Coding for Uplink IMT-Advanced 4G Systems
December 1, 2009, 12:00am PST
Adoption of relay stations has been commonly accepted as a key technique for future IMT advanced 4G systems to improve the link performance. While study in relay systems is often carried out for...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Leveraging Reliable Bits: ECC Design Consideration for Practical Secure Biometric Systems
December 1, 2009, 12:00am PST
It is well-known that a biometric fuzzy vault can be constructed by applying an Error Correcting Code (ECC) to a biometric signal. This is attractive because authentication only requires the check...
Provided by Mitsubishi Electric Research Laboratories
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White Papers
Performance Analysis of Beacon-Enabled IEEE 802.15.4 MAC for Emergency Response Applications
December 1, 2009, 12:00am PST
IEEE 802.15.4 standard provides a viable MAC and PHY specification for wireless sensor networks. Performance evaluation of these networks has been reported in literature. Previous works focus...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
TV Architecture Supporting Multiple 3D Services
March 1, 2010, 12:00am PST
This paper describes changes to the television architecture to support 3D video, with emphasis on the receiver and display processor. It is expected that multiple 3D services will be available in...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Alignment and Bit Extraction for Secure Fingerprint Biometrics
February 1, 2010, 12:00am PST
Security of biometric templates stored in a system is important because a stolen template can compromise system security as well as user privacy. Therefore, a number of secure biometrics schemes...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
QRD-Based Precoded MIMO-OFDM Systems With Reduced Feedback
March 1, 2010, 12:00am PST
QR Decomposition (QRD)-based precoded MIMO-OFDM systems with reduced feedback are proposed to convert the MIMO-OFDM channel into layered subchannels. QRD-M is further combined with either Singular...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Optimized Opportunistic Multicast Scheduling (OMS) Over Wireless Cellular Networks
March 1, 2010, 12:00am PST
Optimized Opportunistic Multicast Scheduling (OMS) is studied for cellular networks, where the problem of efficiently transmitting a common set of fountain-encoded data from a single base station...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Hiding Information Inside Structured Shapes
March 1, 2010, 12:00am PST
This paper describes a new technique for embedding a message within structured shapes. It is desired that one changes in the shape owing to the embedded message are invisible to a casual observer...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Privacy and Security of Features Extracted From Minutiae Aggregates
March 1, 2010, 12:00am PST
This paper describes the authors' recent analysis on the security and privacy of biometric feature vectors obtained from fingerprint minutiae. A large number of contiguous regions (cuboids) are...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
QoS Harmonization for Home Networks
April 1, 2010, 12:00am PDT
A modern home could contain a large variety of devices and all of them should be able to work together so as to bring a rich experience to the users. Quality of Service (QoS) is a critical factor...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Differentiable Spectrum Partition for Fractional Frequency Reuse in Multi-Cell OFDMA Networks
June 1, 2010, 12:00am PDT
To mitigate Inter-Cell Interference (ICI) and achieve higher spectrum efficiency, Fractional Frequency Reuse (FFR) has been widely adopted by the next generation wireless systems, wherein...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Multi-Antenna Analog Network Coding for Multi-Hop Wireless Networks
June 1, 2010, 12:00am PDT
This paper proposes a Minimum Mean-Square-Error Bi-directional Amplify-and-Forward (MMSEBAF) relaying protocol for multi-hop wireless networks employing multi-antenna relays. MMSEBAF is a...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Multi-Class Batch-Mode Active Learning for Image Classification
July 1, 2010, 12:00am PDT
Accurate image classification is crucial in many robotics and surveillance applications - for example, a vision system on a robot needs to accurately recognize the objects seen by its camera....
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
RPL Based Routing for Advanced Metering Infrastructure in Smart Grid
July 1, 2010, 12:00am PDT
In this paper, the authors present a routing protocol design and implementation for the Advanced Metering Infrastructure (AMI) in Smart Grid. The proposed protocol implementation is based on the...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
A Complete Characterization of an Optimal Timer Based Scheme
July 1, 2010, 12:00am PDT
Timer-based mechanisms are often used in several wireless systems to help a given (sink) node select the best helper node among many available nodes. Specifically, a node transmits a packet when...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Adaptive Probabilistic Decision-Based Energy Saving Strategy for the Next Generation Cellular Wireless Systems
July 1, 2010, 12:00am PDT
As Mobile Stations (MSs) in the next generation cellular wireless systems will more frequently operate on multiple applications, such as web browsing, VoIP, online video etc., energy saving...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Subcarrier Spreading for ICI Mitigation in OFDM/OFDMA Systems
July 1, 2010, 12:00am PDT
Two of the major challenges facing OFDM/OFDMA systems are their sensitivity to frequency selective fading and ICI due to CFO or Doppler shift, especially when the subcarrier spacing becomes...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Clustering Based Fractional Frequency Reuse and Fair Resource Allocation in Multi-Cell Networks
July 1, 2010, 12:00am PDT
Fractional Frequency Reuse (FFR), using different frequency reuse factors for cell center and edge regions, is able to effectively improve spectrum efficiency in multi-cell OFDMA networks....
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
RelCom: Relational Combinatorics Features for Rapid Object Detection
July 1, 2010, 12:00am PDT
The authors present a simple yet elegant feature, RelCom, and a boosted selection method to achieve a very low complexity object detector. They generate combinations of low-level feature...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Morphable Reflectance Fields for Enhancing Face Recognition
July 1, 2010, 12:00am PDT
In this paper, the authors present a novel framework to address the confounding effects of illumination variation in face recognition. By augmenting the gallery set with realistically relit...
Provided by Mitsubishi Electric Research Laboratories
-
White Papers
Breaking the Interactive Bottleneck in Multi-Class Classification With Active Selection and Binary Feedback
July 1, 2010, 12:00am PDT
Multi-class classification schemes typically require human input in the form of precise category names or numbers for each example to be annotated - providing this can be impractical for the user...
Provided by Mitsubishi Electric Research Laboratories
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