Nowadays, more and more communication systems are deployed under mobile environments with very high velocity. This paper focuses on the channel estimation problem in vehicular scenarios, which is very challenging in view of the extremely time-varying characteristics of mobile channels. Specifically, we propose a novel channel estimator named constructed data pilot (CDP) estimator for the current communication standards by fully exploiting the channel correlation characteristics across two concatenated symbols. On the basis of the CDP estimator, we further resort to two efficient techniques to improve its performance over the entire signal-to-noise-ratio (SNR) region. For the first technique, the time-variant mobile channel is modeled as a first-order Markov process so that the exact autocorrelation value of the two adjacent symbols can be derived. For the second technique, the SNR is estimated and serves as a priori information. Simulation results reveal that our proposed channel estimators outperform existing alternatives with lower computational complexity.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Constructed Data Pilot-Assisted Channel Estimators for Mobile Environments


    Contributors:
    Zhao, Zijun (author) / Cheng, Xiang (author) / Wen, Miaowen (author) / Yang, Liuqing (author) / Jiao, Bingli (author)


    Publication date :

    2015-04-01


    Size :

    1314039 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    ON PROTOTYPING IEEE802.11P CHANNEL ESTIMATORS IN REAL-WORLD ENVIRONMENTS USING GNURADIO

    Stoica, Razvan-Andrei / Severi, Stefano / De Abreu, Giuseppe Thadeu Freitas | British Library Conference Proceedings | 2016


    On prototyping IEEE802.11p channel estimators in real-world environments using GNURadio

    Stoica, Razvan-Andrei / Severi, Stefano / de Abreu, Giuseppe Thadeu Freitas | IEEE | 2016


    Pilot-Assisted Sparse Channel Estimation Based on Mutual Incoherence Property

    Nasser, Ahmed / Muta, Osamu / Elsabrouty, Maha | IEEE | 2019


    Performance Analysis for LTE Transmission Using Channel Estimators

    Pech-Carmona, J. H. / Cuevas-Ruiz, J. L. / Aragon-Zavala, A. | IEEE | 2012