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Channel Estimation for Downlink LTE System Based on LAGRANGE Polynomial Interpolation

Authors:
Mallouki Nasreddine Mallouki
Nsiri Bechir Nsiri
Walid Hakimi Hakimi
Mahmoud Ammar Ammar

Keywords: LTE; MIMO; SISO; Interpolation; Lagrange

Abstract:
Long Term Evolution (LTE) uses different techniques to achieve high throughput required, such as the HARQ techniques, Multiple-Input Multiple-Output (MIMO) transmission schemes and estimation techniques. In the present paper, research focuses on Downlink LTE channel estimation which is based on the interpolation to estimate channel coefficients. Thus, we propose an adaptive method for polynomial interpolation based on Lagrange polynomial. We perform the Downlink LTE system for Single-Input Single-Output (SISO) and MIMO transmission then compare the obtained results with linear and Sinus Cardinal Interpolations. The simulation results show that the Lagrange method outperforms the linear interpolation in term of Block Error Rate (BLER) and throughput vs. Signal to Noise Ratio (SNR).

Pages: 65 to 69

Copyright: Copyright (c) IARIA, 2014

Publication date: June 22, 2014

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-347-6

Location: Seville, Spain

Dates: from June 22, 2014 to June 26, 2014