IEEE Transactions on Vehicular Technology Journal Impact Factor & Information

Publisher: Vehicular Technology Society; Institute of Electrical and Electronics Engineers; IEEE Vehicular Technology Group, Institute of Electrical and Electronics Engineers

Journal description

Land, airborne, and maritime mobile services; portable or hand-carried and citizens' communications services, when used as an adjunct to a vehicular system; vehicular electrotechnology, equipment, and systems ordinarily identified with the automotive industry, excluding systems associated with public transit.

Current impact factor: 2.64

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 2.642
2012 Impact Factor 2.063
2011 Impact Factor 1.921
2010 Impact Factor 1.485
2009 Impact Factor 1.488
2008 Impact Factor 1.308
2007 Impact Factor 1.191
2006 Impact Factor 1.071
2005 Impact Factor 0.86
2004 Impact Factor 0.611
2003 Impact Factor 0.861
2002 Impact Factor 1.22
2001 Impact Factor 0.776
2000 Impact Factor 0.735
1999 Impact Factor 0.902
1998 Impact Factor 0.67
1997 Impact Factor 0.812
1996 Impact Factor 0.769
1995 Impact Factor 0.627
1994 Impact Factor 0.796
1993 Impact Factor 1.095
1992 Impact Factor 0.879

Impact factor over time

Impact factor

Additional details

5-year impact 2.02
Cited half-life 4.90
Immediacy index 0.25
Eigenfactor 0.03
Article influence 0.80
Website IEEE Transactions on Vehicular Technology website
Other titles IEEE transactions on vehicular technology, Transactions on vehicular technology, Vehicular technology
ISSN 0018-9545
OCLC 1644964
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Institute of Electrical and Electronics Engineers

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  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: We propose a novel 6 DoF visual SLAM method based on the structural regularity of man-made building environments. The idea is that we use the building structure lines as features for localization and mapping. Unlike other line features, the building structure lines encode the global orientation information that constrains the heading of the camera over time, eliminating the accumulated orientation errors and reducing the position drift in consequence. We extend the standard EKF visual SLAM method to adopt the building structure lines with a novel parametrization method that represents the structure lines in dominant directions. Experiments have been conducted in both synthetic and real-world scenes. The results show that, our method performs remarkably better than the existing methods in terms of position error and orientation error. In the test of indoor scenes of the public RAWSEEDS datasets, with the aid of wheel odometer, our method produces bounded position errors about 0:79 meter along a 967 meter path even though no loop closing algorithm is applied.
    IEEE Transactions on Vehicular Technology 06/2015; DOI:10.1109/TVT.2015.2388780
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    ABSTRACT: In this paper, performance of a cooperative decodeand-forward system is analyzed in κ-µ, η-µ, and mixed κ-µ and η-µ fading environment. Exact expressions for the average symbol error rate are derived for M-ary phase-shift keying modulated data using moment generating function based approach. Further, asymptotic expressions at high signal-to-noise ratio are analyzed to obtain optimal power allocation at the source and the relay node. Diversity order for the different fading types is also obtained. The effect of source to destination distance on the performance of cooperative fixed-relay system is observed for equal and optimal power allocations.
    IEEE Transactions on Vehicular Technology 04/2015; DOI:10.1109/TVT.2015.2418211
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    ABSTRACT: Inter-cell interference (ICI) is one of the most critical factors affecting performance of cellular networks. In this paper, we investigate a joint link adaptation and user scheduling problem for multi-cell downlink employing HARQ techniques, where the ICI exists among cells. We first propose an approximation method on aggregated ICI for analyzing an effective signal-to-interference-and-noise ratio (SINR) with the HARQ technique at users, named identical path-loss approximation (IPLA). Based on the proposed IPLA, we propose a transmission rate selection algorithm maximizing an expected throughput at each user. We also propose a simple but effective cross-layer framework jointly combining transmission rate adaptation and user scheduling techniques, considering both HARQ and ICI. It is shown that statistical distribution of the effective SINR at users based on the IPLA agrees well with the empirical distribution, while the conventional Gaussian approximation (GA) does not work well in the case that dominant ICIs exist. Thus, IPLA enables base stations to choose more accurate transmission rates. Furthermore, the proposed IPLA-based cross-layer policy outperforms existing policies in terms of both system throughput and user fairness.
    IEEE Transactions on Vehicular Technology 03/2015; DOI:10.1109/TVT.2015.2412693
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    ABSTRACT: We develop cognitive radio networking methods for a heavy-traffic model in which the channel is always occupied by primary users. This contrasts with the interference-avoidance approach for the non-heavy-traffic model, in which primary users have idle times, and secondary users are allowed to use the channel at those idle times. We use an “underlay” approach to cognitive radio networking by allowing secondary users to share the channel with simultaneously transmitting primary users. Thus, secondary users can degrade the performance of primary users, and our goal is to ensure that the level of performance degradation is acceptable. This is accomplished by scheduling and coordinating the transmissions among users, as well as providing a safeguard for controlling the level of additional interference caused by transmissions from secondary users. We show that our methods can provide additional throughput for secondary users, while maintaining the performance of primary users at the specified level.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1132-1142. DOI:10.1109/TVT.2014.2327477
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    ABSTRACT: Amplify-and-forward-based two-way relaying (TWR-AF) promises significant benefits in wireless networks. In this paper, we aim to obtain unified expressions to determine the outage probability of TWR-AF, regardless of different channel fadings. To this end, a visual integral region-based geometric analysis (GA-IR) approach is introduced, which does not depend on the specific functional forms of the channel fading distributions. Applying this method, we have derived the expressions of both individual and system outage probabilities with adjustable accuracy. Importantly, our analysis is then extended to multiuser and multirelay TWR-AF, and a unified expression and a concise lower bound are achieved. It has been shown that all the presented expressions apply to unequal transmitted power values and conventional fading channels, providing valuable and unified insights into practical system pretest evaluation and designs. By performing simulations over several representative fading channels [e.g., Rayleigh, Nakagami- $m$, Rice (Nakagami- $n$), and generalized- $K$ (KG)] , the accuracy and generality of the provided expressions are presented. Utilizing these results, the outage performance for TWR-AF can be figured out flexibly and efficiently.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1218-1229. DOI:10.1109/TVT.2014.2329853
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    ABSTRACT: In this paper, a cognitive-radio-inspired asymmetric network coding (CR-AsNC) scheme is proposed for multiple-input–multiple-output (MIMO) cellular transmissions, where information exchange among users and base-station (BS) broadcasting can be accomplished simultaneously. The key idea is to apply the concept of cognitive radio (CR) in network coding transmissions, where the BS tries sending new information while helping users' transmissions as a relay. In particular, we design an asymmetric network coding method for information exchange between the BS and the users, although many existing works consider the design of network coding in symmetric scenarios. To approach the optimal performance, an iterative precoding design for CR-AsNC is first developed. Then, a channel-diagonalization-based precoding design with low complexity is proposed, to which power allocation can be optimized with a closed-form solution. The simulation results show that the proposed CR-AsNC scheme with precoding optimization can significantly improve system transmission performance.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1-1. DOI:10.1109/TVT.2014.2327231
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    ABSTRACT: Leveraging the development of mobile communication technologies and increased capabilities of mobile devices, mobile multimedia services have set new trends. To support high-quality Video-on-Demand (VoD) in mobile wireless networks, using virtual community-based approaches to balance the efficiency of content sharing and maintenance cost of performance-aware solutions has attracted increasing research interest. In this paper, we propose a novel Performance-aware Mobile Community-based VoD streaming solution over vehicular ad hoc networks (PMCV). PMCV relies on a newly designed mobile community detection scheme and an innovative community member management mechanism. The former employs a novel fuzzy ant-inspired clustering algorithm and an innovative mobility similarity estimation model to group together the mobile users with similar behavior in terms of playback and movement into mobile communities. The latter introduces the role and task of members, member join and leave, collaborative store and search for resources, and replacement of a broker member. Simulation-based testing shows how PMCV outperforms another state-of-the-art solution in terms of performance.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1201-1217. DOI:10.1109/TVT.2014.2329696
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    ABSTRACT: The femtocell has been considered to be a promising and cost-effective technology to enhance cellular coverage and capacity. However, in the uplink of orthogonal frequency-division multiple access (OFDMA)-based femtocell systems, the signals from macrocell users (MUs) generally arrive at the femtocell base station (FBS) asynchronously because their transmissions are scheduled to be synchronized at the macrocell base station (MBS). When the timing misalignment caused by the asynchronous reception at the FBS is greater than the cyclic prefix length, intercarrier interference (ICI) will arise in demodulation. In this paper, a performance analysis of uplink OFDMA femtocell network is presented. First, the cumulative distribution function (CDF) of MU arrival time is derived. Evaluation shows that the derived CDF is accurate and agrees with simulation results. With the CDF, a closed-form expression of probability mass functions (PMFs) of relative delay of MU signal and probability of ICI occurrence for two synchronization schemes are developed. Based on the PMF of relative delay, ICI power averaged over MU locations for the macrocell using fractional power control is derived for the two synchronization schemes. This new theoretical result helps analyze the signal-to-interference-plus-noise ratio (SINR) of the femtocell, femtocell capacity, and symbol error rate (SER). The theoretical analysis provides a solid evaluation of the effects of ICI for different FBS locations on system performance. It is shown that the performance analysis is quite agreeable with computer simulation. Theory and simulation results show that the system performance of the femtocell using first MU arrival time for synchronization is close to that of no ICI and better than that of using the earliest permissible arrival time.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):998-1013. DOI:10.1109/TVT.2014.2329710
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    ABSTRACT: Due to their worldwide deployment, 3GPP mobile networks, particularly Long-Term Evolution (LTE), are gaining a lot of momentum, as are LTE-connected vehicles. While one may envision an LTE-connected vehicle as a nicely designed vehicle with sophisticated equipment, a conventional vehicle with a person using an LTE-enabled smartphone or tablet on board can be logically qualified for an LTE-connected vehicle. Maintaining an acceptable quality of service (QoS)/quality of experience (QoE) of LTE services for a user on board a moving vehicle is a challenging problem. One approach for that is to anticipate QoS/QoE degradation and to exploit the different radio access technologies, such as WiFi, that may be available at an LTE-connected vehicle or, in general, at an LTE-enabled user equipment (UE) on board the vehicle. For this purpose, this paper introduces a complete framework that proactively defines QoS/QoE-aware policies for LTE-connected vehicles (UE devices) to select the most adequate radio access out of the available access technologies (e.g., WiFi and LTE) that maximizes QoE throughout the mobility path. The policies are communicated to the users following 3GPP standards and are enforced by the UE devices. They take into account the service type, the mobility feature, and the traffic dynamics over the backhauls of the different available accesses. Two different models were proposed to model the network selection process. The first model is based on multiple-attribute decision making (MADM) techniques, whereas the second model is based on the Markov decision process (MDP). Moreover, the network selection process is modeled using a time-continuous Markov chain, and the performance of the proposed framework (VECOS) is extensively evaluated through NS2-based simulations considering the case of two wireless access technologies, namely, WiFi and cellular networks. The obtained results illustrate that in comparison with conventional vertical handoff mechanisms whereby - iFi is always selected whenever it becomes available, the proposed framework ensures better QoS and achieves better QoE throughout the time of the received service and the mobility path of the user, even in the case of errors in the prediction of the user's mobility.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1-1. DOI:10.1109/TVT.2014.2327241
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    ABSTRACT: Intelligent transportation system (ITS) services have attracted significant attention in recent years. To support ITS services, architecture is required to retrieve information and data from moving vehicles and roadside facilities in an efficient manner. A two-tier system that integrates low-tier vehicular ad hoc networks (VANETs) and a high-tier infrastructure-based peer-to-peer (P2P) overlay, which can achieve a high lookup success rate and low lookup latency for information retrieval, has been developed. However, conventional information lookups in the two-tier VANET/P2P system may introduce extra lookup messages and latencies because the lookup queries are simultaneously performed over the VANET/P2P networks. This paper proposes an adaptive lookup protocol for the two-tier VANET/P2P system to improve the efficiency of information retrieval. The proposed protocol uses a Bloom filter, which is a space-efficient data structure, to collect reachability information of road segments; therefore, adaptive routing of queries between low- and high-tier networks according to reachability probability can be employed. Simulations based on the SUMO traffic simulator and QualNet network simulator demonstrate that compared with the conventional two-tier lookup mechanism, the adaptive lookup protocol can reduce the lookup latency by 12%, reduce the P2P lookup overhead by 20%–33%, and achieve a high success rate in information lookups.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1051-1064. DOI:10.1109/TVT.2014.2329015
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    ABSTRACT: We consider, in this paper, the maximization of throughput in a dense network of collaborative cognitive radio (CR) sensors with limited energy supply. In our case, the sensors are mixed varieties (heterogeneous) and are battery powered. We propose an ant colony-based energy-efficient sensor scheduling algorithm (ACO-ESSP) to optimally schedule the activities of the sensors to provide the required sensing performance and increase the overall secondary system throughput. The proposed algorithm is an improved version of the conventional ant colony optimization (ACO) algorithm, specifically tailored to the formulated sensor scheduling problem. We also use a more realistic sensor energy consumption model and consider CR networks employing heterogeneous sensors (CRNHSs). Simulations demonstrate that our approach improves the system throughput efficiently and effectively compared with other algorithms.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1243-1249. DOI:10.1109/TVT.2013.2290031
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    ABSTRACT: Socially aware networking (SAN) provides a promising paradigm for routing and forwarding data packets by exploiting social properties of involved entities, for example, in vehicular social networks (VSNs). The mobility of individuals often features some regularity in location and time, particularly in vehicular environments. However, individuals' learning capability and awareness to the dynamic environments have not been well explored in the literature. Inspired by the artificial bee colony, we present BEEINFO, which is a set of interest-based forwarding schemes for SAN, which consists of BEEINFO-D, BEEINFO-S, and BEEINFO-D&S. BEEINFO adopts the food foraging behavior of bees to detect the environment information and to optimize the forwarding procedure. BEEINFO takes advantage of individuals' perceiving and learning capability to gather information of density and social ties. BEEINFO-D, BEEINFO-S, and BEEINFO-D&S are distinct from each other according to different utilization of density and social ties. This enhances the adaptability to dynamic environments. Additionally, BEEINFO performs message scheduling and buffer management to improve the forwarding performance. Extensive simulations have been conducted to compare BEEINFO with two representative protocols, i.e., PRoPHET and Epidemic. The results illustrate that BEEINFO outperforms PRoPHET and Epidemic with higher message delivery ratio, less overhead, and fewer hop counts.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1188-1200. DOI:10.1109/TVT.2014.2305192
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    ABSTRACT: Coordinated beamforming (CBF) provides improved sum rate with less overhead and computational complexity, and its theoretical performance analysis is mostly finished in a spatially uncorrelated environment. In this paper, we investigate the effect of spatial correlation on the sum rate of a two-cell multiuser downlink channel. We analyze the scaling laws of the sum rate with a large number of users. To improve the performance, different roles are assigned to the two cells: One is a master cell, and the other is a slave cell. The base station (BS) of the master cell requests the interference cancelation to the slave cell, and the BS of the slave cell performs precoding to cancel the interference influencing over the master cell, although the achievable rate of the slave cell is decreased. The decision of the master and slave cells can be affected by the number of users and the degree of spatial correlations. From computer-based simulations, we show that our proposed algorithm can achieve a higher sum rate than other previous approaches with lower overhead.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1235-1243. DOI:10.1109/TVT.2014.2329477
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    ABSTRACT: A 60-GHz radio is an attractive technology in wireless home networks because it can provide high data rate up to a few gigabits per second. A 60-GHz network generally uses directional antennas and has a problem of neighbor discovery (ND), although it has an advantage of high data transmissions. In particular, if a directional antenna is used in self-organized wireless ad hoc networks, the ND time and energy consumption can be significantly increased. To solve this problem, we propose a multiband directional ND (MDND) scheme, in which management procedures are carried out by using the 2.4-GHz band with the omnidirectional antennas, whereas data transmissions are performed by using the 60-GHz band with directional antennas. Analytical models on the ND time and energy consumption are also derived by considering assisted and beamforming periods in the ND procedure through the omnidirectional and directional antennas. Performance evaluation results demonstrate that the proposed scheme outperforms comparative schemes that use only directional beamforming in terms of the average ND time and energy consumption.
    IEEE Transactions on Vehicular Technology 03/2015; 64(3):1143-1155. DOI:10.1109/TVT.2014.2329303