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http://dx.doi.org/10.5573/ieie.2016.53.3.011

FFT-based Channel Estimation Scheme in LTE-A Downlink System  

Moon, Sangmi (School of Electronics & Computer Engineering Chonnam National University)
Chu, Myeonghun (School of Electronics & Computer Engineering Chonnam National University)
Kim, Hanjong (School of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education)
Kim, Daejin (School of Electronics & Computer Engineering Chonnam National University)
Hwang, Intae (School of Electronics & Computer Engineering Chonnam National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.53, no.3, 2016 , pp. 11-20 More about this Journal
Abstract
In this paper, we propose the channel estimation scheme for Long Term Evolution-Advanced (LTE-A) downlink system. The proposed scheme uses the fast fourier transform (FFT) interpolation scheme for the user moving at a high speed. The FFT interpolation scheme converts the channel frequency response obtained from least square (LS) or minimum mean square error (MMSE) channel estimation scheme to time domain channel impulse response by taking the inverse FFT (IFFT). After windowing the channel response in the time domain, we can obtain the channel frequency response by taking the FFT. We perform the system level simulation based on 20MHz bandwidth of 3GPP LTE-A downlink system. Simulation results show that the proposed channel estimation scheme can improve signal-to-noise-plus-interference ratio (SINR), throughput, and spectral efficiency of conventional system.
Keywords
Channel Estimation; Downlink System; FFT Interpolation; LTE-A; System Level Simulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 3GPP, TS 36.211, "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation," V11.4.0, Sept. 2013.
2 Saransh Malik, Sherlie Portugal, Sangmi Moon, Bora Kim, Cheol Sung Kim, In Tae Hwang, "Novel Channel Estimation Method in Fast Fading Channels Applied to LTE-Advanced," Journal of The Institute of Electronics and Information Engineers Vol.49, NO.5, May 2012
3 J. Hou, J. Liu, "A Novel Channel Estimation Algorithm for 3GPP LTE Downlink System Using Joint Time-Frequency Two-Dimentional Iterative Wiener Filter", University of Science and Technology of China.
4 Hyundong Kim and Sangho Choe, "Channel Prediction and Estimation based Feedback Overhead Reduction for Adaptive OFDM System," The Institute of Electronics and Information Engineers, Summer Conference 2016, June 2006.
5 Yusuke Ohwatari, Nobuhiko Miki, Takahiro Asai, Tetsushi Abe, and Hidekazu Taoka, "Performance of Advanced Receiver Employing Interference Rejection Combining to Suppress Inter-Cell Interference in LTE-Advanced Downlink," 2011 IEEE VCT, Sept. 2011.
6 Zakaria Hanzaz, Hans Dieter Schotten, "Analysis of Effective SINR Mapping Models for MIMO OFDM in LTE System," 2013 9th International Wireless Communications and Mobile Computing Conference (IWCMC), 1-5 July 2013
7 3GPP TR 36.814, Further advancements for E-UTRA physical layer aspects (Release 9), V9.0.0 (2010-03)