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Doppler Shift Compensation Schemes in VANETs

F. Nyongesa, K. Djouani, T. Olwal, Y. Hamam
2015 Mobile Information Systems  
A lot of vehicular ad hoc network (VANET) research has focused on specific areas including channel multiplexing, antenna diversity, and Doppler shift compensation schemes in an attempt to optimize BER  ...  Over the last decade vehicle-to-vehicle (V2V) communication has received a lot of attention as it is a crucial issue in intravehicle communication as well as in Intelligent Transportation System (ITS).  ...  Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper.  ... 
doi:10.1155/2015/438159 fatcat:6yo4rpcuuberfdmjk6a47auzve

Performance Analysis of Sparse MIMO-OFDM Channel Estimation Using Spatial and Temporal Correlations

2016 International Journal of Science and Research (IJSR)  
To improve accuracy of the channel, this paper proposes a parametric sparse multiple input multiple output (MIMO) -OFDM channel estimation scheme based on the finite rate of innovation (FRI) theory, whereby  ...  Meanwhile, both the spatial and temporal correlations of wireless MIMO channels are exploited to improve the accuracy of the channel estimation.  ...  In this paper, an algorithm is presented for the estimation of sparse Multiple Input Multiple Output (MIMO)-OFDM channel estimation [11] , [12] .  ... 
doi:10.21275/v5i1.nov152898 fatcat:zcd7fnep35cmxdt4v4u5ggefxi

WLC43-5: Low-Complexity Adaptive High-Resolution Channel Prediction for OFDM Systems

Ian C. Wong, Brian L. Evans
2006 IEEE Global Communications Conference, Exhibition, & Industry Forum (GLOBECOM)  
The algorithm is based on an improved rank and subspace adaptive Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT).  ...  We propose a low-complexity adaptive highresolution channel prediction algorithm for pilot symbol assisted orthogonal frequency division multiplexing (OFDM) systems.  ...  Thus, by extracting theL ×L upper-left submatrix of the left hand side of (17) and using it in (12) , we arrive at an efficient adaptive ESPRIT spectral matrix updating algorithm with principal complexity  ... 
doi:10.1109/glocom.2006.869 dblp:conf/globecom/WongE06a fatcat:ticnhcle7rg2dhhqypqed7crc4

Super-Resolution Sparse MIMO-OFDM Channel Estimation Based on Spatial and Temporal Correlations

Zhen Gao, Linglong Dai, Zhaohua Lu, Chau Yuen, Zhaocheng Wang
2014 IEEE Communications Letters  
This letter proposes a parametric sparse multiple input multiple output (MIMO)-OFDM channel estimation scheme based on the finite rate of innovation (FRI) theory, whereby super-resolution estimates of  ...  Meanwhile, both the spatial and temporal correlations of wireless MIMO channels are exploited to improve the accuracy of the channel estimation.  ...  For MIMO-OFDM systems, accurate channel estimation is essential to guarantee the system performance [2] . Generally, there are two categories of channel estimation scheme for MIMO-OFDM systems.  ... 
doi:10.1109/lcomm.2014.2325027 fatcat:26sd2sdlc5evxkq6he4aj4upp4

On the Compensation of RF Impairments with Multiple Antennas in SIMO OFDM Systems

P. Morlat, J. Nunez Perez, G. Villemaud, J. Verdier, M. Gorce
2006 IEEE Vehicular Technology Conference  
We developed a new estimation/compensation scheme to jointly compensate for the effect of multipath and RF nonidealities on baseband signals in the special case of Zero-IF receivers.  ...  of a single input multiple output orthogonal frequency division multiplexing (SIMO OFDM) receiver.  ...  We can hope for a substantial improvement with this algorithm. IV.  ... 
doi:10.1109/vtcf.2006.109 dblp:conf/vtc/MorlatPVVG06 fatcat:nbv7th7mq5f4pii4ggofyvdula

High Accurate Time-of-Arrival Estimation with Fine-Grained Feature Generation for Internet-of-Things Applications [article]

Guangjin Pan, Tao Wang, Shunqing Zhang, Shugong Xu
2020 arXiv   pre-print
Conventional schemes often require extra reference signals or more complicated algorithms to improve the time-of-arrival (TOA) estimation accuracy.  ...  propagation environments and 38 ns median TOA estimation errors for multipath fading environments, which is equivalently 36% and 25% improvement if compared with the existing MUSIC and ESPRIT algorithms  ...  Table II RUNNING II TIME COMPARISON FOR DIFFERENT ALGORITHMS Algorithm Running Time Algorithm Training/Test Time MUSIC 457.4 s Proposed 1792 s / 1.8 s ESPRIT 6.1 s DCNN 5423 s / 2.9 s algorithms  ... 
arXiv:2008.07932v1 fatcat:gdcjwy6djrdqfom3w4t67qbphm

Performance Evaluation of IEEE 802.11g with Smart Antenna System in the Presence of Bluetooth Interference Environment

Shiann Shiun Jeng, Chen Wan Tsung
2007 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring  
The DOA estimation algorithms can use the signal space derived by spectral spatial smoothing to estimate the DOAs of the received signals and the DOA based beamforming algorithms generate the weighting  ...  The proposed smart antenna system utilizes the spectral spatial smoothing which uses the multi-carrier transmission of an OFDM system to decorrelate the correlation of the received signals and span the  ...  Then, the DOA estimation algorithm, TLS-ESPRIT, utilizes the signal space, V S , to estimate the DOAs of received signals.  ... 
doi:10.1109/vetecs.2007.128 dblp:conf/vtc/JengT07 fatcat:xe2skcin3vh3viivcsofjcia2y

Joint Estimation of Carrier Frequency Offset and Channel Complex Gains for OFDM Systems in Fast Time-Varying Vehicular Environments

Eric Pierre Simon, Hussein Hijazi, Laurent Ros, Marion Berbineau, Pierre Degauque
2010 2010 IEEE International Conference on Communications Workshops  
In this paper, the physical nature of the radiochannel is considered by using an L-path channel model to developing an algorithm for OFDM systems operating in fast timevarying vehicular environment.  ...  Assuming the Time of Arrival (TOA) is known, a novel iterative pilot-aided algorithm for joint estimation of multi-path Rayleigh channel complex gains and Carrier Frequency Offset (CFO) is introduced.  ...  ACKOWLEDGEMENT This work has been carried out in the framework of the CISIT (Campus International sur la Sécurité et l Intermodalité des Transports) project and funded by the French Ministry of Research  ... 
doi:10.1109/iccw.2010.5503938 fatcat:umijxo2jnvgs5ijvl37d33g2a4

Parametric Channel Estimation for Pseudo-Random Tile-Allocation in Uplink OFDMA

M.R. Raghavendra, E. Lior, S. Bhashyam, K. Giridhar
2007 IEEE Transactions on Signal Processing  
A tile is made of small number of physically adjacent data subcarriers along with a few embedded pilot subcarriers and an uplink sub-channel allocated to an user in OFDMA systems such as IEEE 802.16d/e  ...  While the embedded pilots enable intra-tile channel interpolation, such an estimation will have an error floor which degrades performance substantially for highly frequency selective channels.  ...  Discrete time baseband equivalent of an OFDMA system with M users. [3, sec. 8.4.2].  ... 
doi:10.1109/tsp.2007.899383 fatcat:q77ojgk6vncajc2cstkprgjrky

Sinusoidal Modeling and Adaptive Channel Prediction in Mobile OFDM Systems

I.C. Wong, B.L. Evans
2008 IEEE Transactions on Signal Processing  
Since the channel model parameter acquisition has cubic complexity, we also propose a linear complexity channel parameter tracking algorithm based on an improved adaptive ESPRIT algorithm to continuously  ...  We propose a wireless fading channel prediction algorithm for a pilot-symbol aided Orthogonal Frequency Division Multiplexing (OFDM) system.  ...  Thus, we also propose a linear complexity channel parameter tracking algorithm based on our own improved adaptive ESPRIT algorithm.  ... 
doi:10.1109/tsp.2007.909002 fatcat:eqc65kzzczb67kuoem2kqwngay

Parametric Channel Estimation in Reuse-1 OFDM Systems

M. R. Raghavendra, S. Bhashyam, K. Giridhar
2007 2007 IEEE International Conference on Communications  
We propose an improved channel estimator for reuse-1 orthogonal frequency division multiplexing (OFDM) cellular systems 1 .  ...  We also derive the analytical expression for the bit-error-rate of a zeroforcing (ZF) receiver based on the proposed channel estimator.  ...  OFDM SYSTEM MODEL Consider an OFDM system operating with a bandwidth of B = 1 T Hz (T is the sampling period).  ... 
doi:10.1109/icc.2007.498 dblp:conf/icc/RaghavendraBG07 fatcat:3hmkt6q325ap7hyw37hgpkbjjy

Survey of WiFi positioning using time-based techniques

Ahmed Makki, Abubakr Siddig, Mohamed Saad, Chris Bleakley
2015 Computer Networks  
This paper provides an overview of the IEEE 802.11 standards and summarizes the key research challenges in 802.11 time-based positioning.  ...  Finally, the paper summarizes the state-of-the-art and makes suggestions for future research directions.  ...  Acknowledgment This publication is part of research conducted with the financial support of Science Foundation The work has been conducted as part of the WiPhy-Loc8 research project (  ... 
doi:10.1016/j.comnet.2015.06.015 fatcat:7zwdvfolkzbpth6oqpawy5d5ji

Interference Rejection for Parametric Channel Estimation in Reuse-1 Cellular OFDM Systems

M.R. Raghavendra, S. Bhashyam, K. Giridhar
2009 IEEE Transactions on Vehicular Technology  
This paper proposes a joint channel-estimation method for the desired and interfering channels for cell edge users in reuse-1 orthogonal frequency-division multiplexing (OFDM) cellular systems.  ...  Index Terms-Cellular orthogonal frequency-division multiplexing (OFDM), cochannel interference (CCI), estimation of signal parameters using rotational invariance method (ESPRIT), IEEE 802.16d/e, joint  ...  MSE ANALYSIS OF MULTIPATH DELAYS Here, we derive the expressions for the MSE of multipath delays estimated from the ESPRIT algorithm.  ... 
doi:10.1109/tvt.2009.2018088 fatcat:wt7wjrr4f5cd7lq4qrf3notnse

Joint Communications and Sensing Using Two Steerable Analog Antenna Arrays

J. Andrew Zhang, Antonio Cantoni, Xiaojing Huang, Y. Jay Guo, Robert W. Heath
2017 2017 IEEE 85th Vehicular Technology Conference (VTC Spring)  
In this paper, we propose a system architecture which allows seamless operation of JCAS and flexible configurations of transceivers and antennas, based on the use of two phased antenna arrays.  ...  The signal processing required by JCAS for the proposed system is also briefly discussed.  ...  An integrated system will also benefit from mutual sharing of information for improved performance, e.g., using sensed environment knowledge to assist beamforming design [2] .  ... 
doi:10.1109/vtcspring.2017.8108565 dblp:conf/vtc/ZhangCHGH17a fatcat:p44ybslqozf7nescse6kr6mknq

A Survey on Joint Communication-Radar Systems

Sana Mazahir, Sajid Ahmed, Mohamed-Slim Alouini
2021 Frontiers in Communications and Networks  
Therefore, devising schemes for spectrum sharing between radar and wireless communication systems has become an important area of research.  ...  In this article, an overview of the spectrum sharing methods is presented, with a focus on JCR systems in automotive and other applications.  ...  In , mathematical modeling and signal processing algorithms for range and velocity estimation in multitarget scenarios were developed for IEEE 802.11p-based OFDM signaling.  ... 
doi:10.3389/frcmn.2020.619483 fatcat:lvvpe5genfahnfzdqlkwllvnji
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