IJERT-EMS
IJERT-EMS

Analysis of Iterative Channel Algorithm for MIMO OFDM systems using Doppler Spread


Analysis of Iterative Channel Algorithm for MIMO OFDM systems using Doppler Spread
Authors : Hemarathi. H. V
Publication Date: 12-10-2017

Authors

Author(s):  Hemarathi. H. V

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Volume. 6 - Issue. 10 , October - 2017

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV6IS100022

Abstract

Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating in high mobility scenarios, channel estimation becomes a challenging issue, due to fast channel variation and severe intercarrier interference (ICI). This paper proposes a novel pilotaided iterative receiver, based on pilot symbols and iterative softestimate of data symbols and parallel interference cancellation (PIC) scheme coupled with decision statistical combining (DSC) is used to cancel the ICI and to improve the data symbols detection. These data symbols are then utilized to refine the channel estimation further, iteratively. The simulation results of both methods are compared and values obtained depict that the PICDSC method improve channel estimation and its BER/SNR value remains stable.

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