Generalized Least Squares Based Channel Estimation for High Data Rate FBMC-OQAM
|Title:||Generalized Least Squares Based Channel Estimation for High Data Rate FBMC-OQAM||Authors:||Singh, Vibhutesh Kumar; Flanagan, Mark F.; Cardiff, Barry||Permanent link:||http://hdl.handle.net/10197/11133||Date:||28-Jun-2018||Online since:||2019-10-09T15:40:45Z||Abstract:||This paper addresses the problem of preamble-based Channel Estimation (CE) in filter bank multi-carrier systems with offset quadrature amplitude modulation (FBMC-OQAM), a task that is problematic due to the presence of intrinsic Inter-Carrier Interference (ICI) and Inter-Symbol Interference (lSI). In this work, we present a theoretical analysis of the Mean Squared Error (MSE) of several CE schemes based on the virtual symbol (VS) approach such as the Interference Cancellation Method (ICM) and the Interference Approximation Method (IAM). We also propose and analyze a generalized least squares (GLS) based CE scheme which is capable of achieving improved performance by taking into account the correlation properties of the noise and interference among sub-carriers. Simulation results are presented which verify the accuracy of the theoretical analysis, and also demonstrate that the proposed GLS-based estimation method yields an improvement of almost 3dB in the CE-MSE with respect to the VS-based approach. Finally it is shown that, for higherorder modulation schemes, this CE-MSE reduction translates into significant improvement in the system's overall bit error rate (BER) performance with only minor additional complexity.||Funding Details:||European Commission - European Regional Development Fund
Science Foundation Ireland
|Type of material:||Conference Publication||Publisher:||IEEE||Copyright (published version):||2018 IEEE||Keywords:||Channel estimation; Interference; Estimation; Silicon; Prototypes; Signal to noise ratio; Receivers||DOI:||10.1109/ICT.2018.8464892||Other versions:||https://u-bretagneloire.fr/ict-2018-25th-international-conference-telecommunication||Language:||en||Status of Item:||Peer reviewed||Is part of:||2018 25th International Conference on Telecommunications, ICT 2018||Conference Details:||The 25th International Conference on Telecommunications (ICT 2018), Saint-Malo, France, 26-28 June 2018||ISBN:||9781538623213|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
Show full item record
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.