# IEEE Transactions on Vehicular Technology

## Filter Results

Displaying Results 1 - 25 of 56

Publication Year: 2010, Page(s):C1 - C4
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• ### IEEE Transactions on Vehicular Technology publication information

Publication Year: 2010, Page(s): C2
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• ### Special Section on Advancements in Analysis of CSMA-CA Wireless Network Standards

Publication Year: 2010, Page(s): 1054
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• ### Refinements on IEEE 802.11 Distributed Coordination Function Modeling Approaches

Publication Year: 2010, Page(s):1055 - 1067
Cited by:  Papers (72)
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With the popularity of the IEEE 802.11 standards, many analytical saturation throughput studies for the distributed coordination function (DCF) have been reported. In this paper, we outline a number of issues and criticalities raised by previously proposed models. In particular, a careful look at backoff counter decrement rules allows us to conclude that, under saturation conditions, the slot imme... View full abstract»

• ### Virtual Backoff Algorithm: An Enhancement to 802.11 Medium-Access Control to Improve the Performance of Wireless Networks

Publication Year: 2010, Page(s):1068 - 1075
Cited by:  Papers (33)
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This paper presents a scheme, called the virtual backoff algorithm (VBA), which is based on the sequencing technique for efficient medium-access control. The proposed method minimizes the number of collisions while reducing the delays that occur during the backoff periods. We present an analytical study on MAC-layer issues, which are very important when accessing a channel over wireless networks. ... View full abstract»

• ### MIMO-Based Collision Avoidance in IEEE 802.11e Networks

Publication Year: 2010, Page(s):1076 - 1086
Cited by:  Papers (4)
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In response to the growing market demand for high-performance wireless local area networks (WLANs) with quality-of-service (QoS) support, the IEEE 802.11 standard adopts the 802.11e as the medium access protocol and 802.11n-based products, which utilize multiple-input-multiple-output (MIMO) transmission systems. The medium access collision avoidance of IEEE 802.11e, even with IEEE 802.11n at the p... View full abstract»

• ### Adaptive TXOP Allocation Based on Channel Conditions and Traffic Requirements in IEEE 802.11e Networks

Publication Year: 2010, Page(s):1087 - 1099
Cited by:  Papers (14)
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IEEE 802.11e has established a new access mechanism called the hybrid coordination function (HCF) as a step toward provisioning quality-of service (QoS) support. In this mechanism, a simple HCF scheduler is introduced to take the QoS requirements of admitted flows into account and allocate transmission opportunities (TXOPs), which is the time under which a station (STA) can send its burst of data ... View full abstract»

• ### Cross-Layer Performance Analysis for CSMA/CA Protocols: Impact of Imperfect Sensing

Publication Year: 2010, Page(s):1100 - 1108
Cited by:  Papers (12)
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In this paper, the performance of carrier-sense multiple access (CSMA)/collision-avoidance (CA) protocols in the presence of carrier-sensing errors is analyzed. Two types of carrier-sensing errors, i.e., false alarm and miss-detection, are considered, and their impact on the system performance is analyzed using a new CSMA/CA model based on a Markov chain capturing the sensing error at the physical... View full abstract»

• ### On the Combination of Tropospheric and Local Environment Propagation Effects for Mobile Satellite Systems Above 10 GHz

Publication Year: 2010, Page(s):1109 - 1120
Cited by:  Papers (15)
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Land mobile satellite (LMS) channels at the L (1/2 GHz) and S (2/4 GHz) frequency bands are mainly affected by propagation effects due to the local environment of a mobile terminal, such as multipath, shadowing, and blockage. Future systems for mobile satellite services (MSS) will operate at higher frequency bands, such as Ku (12/14 GHz) and Ka (20/30 GHz), where the tropospheric propagation effec... View full abstract»

• ### Efficient Generation of Spatially and Frequency Correlated Random Values for Cognitive Radio Network Simulators

Publication Year: 2010, Page(s):1121 - 1128
Cited by:  Papers (5)
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We address the generation of random values exhibiting both frequency-dependent spatial correlations and position or more generally terminal-dependent frequency correlations. This case is relevant for the development of radio system/network simulators operating over many bands or over a large spectrum, such as cognitive-radio-inspired networks. The simplistic Kronecker approximation does not allow ... View full abstract»

• ### Mounting-Angle Estimation for Personal Navigation Devices

Publication Year: 2010, Page(s):1129 - 1138
Cited by:  Papers (5)  |  Patents (9)
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This paper presents several methods to estimate the three mounting angles (roll, pitch, and yaw) of an inertial measurement cluster for use in a personal navigation device (PND) within a ground vehicle. Previous research in global positioning system (GPS) and inertial navigation systems assumes that the orientation of the inertial cluster relative to the host vehicle is already known. A typical dr... View full abstract»

• ### Role of Terrain Preview in Energy Management of Hybrid Electric Vehicles

Publication Year: 2010, Page(s):1139 - 1147
Cited by:  Papers (62)  |  Patents (3)
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Energy-management strategy plays a critical role in high fuel economy that modern hybrid electric vehicles can achieve, yet a lack of information about future driving conditions is one of the limitations of fulfilling the maximum fuel economy potential of hybrid vehicles. Today, with wider deployment of vehicle telematic technologies, prediction of future driving conditions, e.g., road grade, is b... View full abstract»

• ### Electrical Power Net Systems in Cars—Impedance Modeling and Measurement

Publication Year: 2010, Page(s):1148 - 1155
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The impedance of power-net systems in cars is described and modeled. The effects of power sources, electric devices, and cabling on the systems' impedance are investigated to predict frequency-dependent voltage fluctuations and resultant possible interferences. Then, a rapid and accurate method for measuring the impedance of electrical power-net systems in cars is presented. This method is based o... View full abstract»

• ### Active Electromagnetic Suspension System for Improved Vehicle Dynamics

Publication Year: 2010, Page(s):1156 - 1163
Cited by:  Papers (67)
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This paper offers motivations for an electromagnetic active suspension system that provides both additional stability and maneuverability by performing active roll and pitch control during cornering and braking, as well as eliminating road irregularities, hence increasing both vehicle and passenger safety and drive comfort. Various technologies are compared with the proposed electromagnetic suspen... View full abstract»

• ### Measurement of Absolute Vehicle Speed With a Simplified Inverse Model

Publication Year: 2010, Page(s):1164 - 1171
Cited by:  Papers (11)  |  Patents (1)
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This paper presents the study of a sensing technique for the measurement of the absolute speed of railway vehicles, which is achieved by detecting the time shift of the track random excitations between two wheelsets of a bogie (or truck). A simplified inverse model is designed to extract particular features of motion at the wheelsets from two inertial sensors mounted onto a bogie frame. The time d... View full abstract»

• ### Processing Dense Stereo Data Using Elevation Maps: Road Surface, Traffic Isle, and Obstacle Detection

Publication Year: 2010, Page(s):1172 - 1182
Cited by:  Papers (92)  |  Patents (3)
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A new approach for the detection of the road surface and obstacles is presented. The high accuracy of the method allows the detection of traffic isles as a distinct class. The 3-D data inferred from dense stereo are transformed into a rectangular digital elevation map (DEM). Two classifiers are proposed, namely, density based and road surface based. The density-based obstacle classifier marks DEM ... View full abstract»

• ### $RD^{4}$: Role-Differentiated Cooperative Deceptive Data Detection and Filtering in VANETs

Publication Year: 2010, Page(s):1183 - 1190
Cited by:  Papers (4)
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The data quality of collected sensing data, which determines the practical value of sensing systems, has been studied in several previous efforts; however, we argue that vehicular ad hoc networks (VANETs), which are a particular application of highly dynamic sensing systems, requires specific treatment to guarantee data quality. In this paper, we design a mechanism, i.e., RD 4, w... View full abstract»

• ### Optimal Control Method of Motoring Operation for SRM Drives in Electric Vehicles

Publication Year: 2010, Page(s):1191 - 1204
Cited by:  Papers (37)
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This paper presents three criteria for evaluating the motoring operations of switched reluctance motor (SRM) drives for electric vehicles (EVs). They imply motoring torque, copper loss, and torque ripple, respectively. The effects of the turn-off and turn-on angles on these criteria are investigated under hysteresis current control. To fulfill the best motoring operation, consequently, the multiob... View full abstract»

• ### EM-Based Joint Channel Estimation and Data Detection for MIMO-CDMA Systems

Publication Year: 2010, Page(s):1205 - 1216
Cited by:  Papers (12)
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In this paper, we present an iterative joint channel-estimation and data-detection technique for multiple-input-multiple-output (MIMO) code-division multiple-access (CDMA) systems over Rayleigh fading channels. The proposed receiver performs channel estimation and data detection using the expectation-maximization (EM) algorithm. We derive a closed-form expression for the optimized weight coefficie... View full abstract»

• ### Reduced-Rank Space–Time Adaptive Interference Suppression With Joint Iterative Least Squares Algorithms for Spread-Spectrum Systems

Publication Year: 2010, Page(s):1217 - 1228
Cited by:  Papers (47)
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This paper presents novel adaptive space-time reduced-rank interference-suppression least squares (LS) algorithms based on a joint iterative optimization of parameter vectors. The proposed space-time reduced-rank scheme consists of a joint iterative optimization of a projection matrix that performs dimensionality reduction and an adaptive reduced-rank parameter vector that yields the symbol estima... View full abstract»

• ### An Analysis of GLRT Packet Detection for WiMedia UWB Applications

Publication Year: 2010, Page(s):1229 - 1241
Cited by:  Papers (6)
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We address the problem of packet detection in the context of the WiMedia ECMA 368 standard. The proposed solution uses a generalized likelihood ratio test (GLRT), which accounts for the dispersive nature of ultrawideband (UWB) signals, and efficiently combines signals belonging to different frequency-hopping bands. A multiple-dwell strategy is investigated to enhance performance while keeping limi... View full abstract»

Publication Year: 2010, Page(s):1242 - 1256
Cited by:  Papers (12)
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In cognitive radio (CR) systems, the efficiency of the primary user detection scheme directly affects the system performance. In this paper, we consider CR systems adopting quiet period for primary user detection. Specifically, we propose an enhanced quiet-period management scheme that utilizes two types of sensing intervals and two detection thresholds for energy detection, and can be used with a... View full abstract»

• ### Relationship of Average Transmitted and Received Energies in Adaptive Transmission

Publication Year: 2010, Page(s):1257 - 1268
Cited by:  Papers (12)
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This paper studies the analytical relationship between the average transmitted and received energies under several adaptive transmitter power control methods, including water filling, truncated power inversion, and downlink beamforming. The study is applicable to many fading channel scenarios, including frequency-nonselective, frequency-selective, and multiple-input-multiple-output (MIMO) channels... View full abstract»

• ### Overspread Digital Transmission Over Wireless Linear Time-Varying MIMO Systems

Publication Year: 2010, Page(s):1269 - 1281
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Accompanying the journey for higher spectral efficiency in mobile wireless communications, this paper studies multiple-input-multiple-output (MIMO) transmission in a unified framework that consolidates the phenomena responsible for frequency selectivity and time selectivity, i.e., delay overspreading and Doppler overspreading, respectively. Starting with a baseband description of the linear time-v... View full abstract»

• ### Ergodic and Outage Performance of Fading Broadcast Channels With 1-Bit Feedback

Publication Year: 2010, Page(s):1282 - 1293
Cited by:  Papers (13)
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In this paper, the ergodic sum rate and the outage probability of a downlink single-antenna channel with K users are analyzed in the presence of Rayleigh flat fading, where limited channel state information (CSI) feedback is assumed. Specifically, only 1-bit feedback per fading block per user is available at the base station. We first study the ergodic sum rate of the 1-bit feedback scheme and con... View full abstract»

## Aims & Scope

The IEEE Transactions on Vehicular Technology is dedicated to the publication of peer-reviewed original contributions of research regarding the theory and practice of electrical and electronics technology in vehicles and vehicular systems.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Nei Kato, Professor
Graduate School of Information Sciences (GSIS)
Tohoku University
Aramaki-Aoba 6-3-09, Aoba-ku, Sendai, 980-8579, JAPAN
Email: kato@it.is.tohoku.ac.jp