IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Implementation of improved channel estimation using transform domain in mobile OFDM systems
Sang-Seol LeeSeong-Seob ShinKyu-Yeul WangByung-Soo KimDuck-Jin Chung
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2010 Volume 7 Issue 15 Pages 1152-1157

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Abstract

In this paper, we propose a low-complexity and low-latency method of FFT based channel estimation for Mobile OFDM systems. Mobile WiMAX system and LTE are next generation communication systems which adopt OFDM systems to achieve high mobility and a high data rate. Especially for high mobility communication systems, efficient channel estimation, technology should be developed. The proposed channel estimation calculates threshold value of channel impulse response (CIR) using discrete wavelet transform (DWT) in a frequency domain. In the experimental results, the proposed method increased performance with low-complexity and low-latency. Implementaion and simulation results show that the proposed method reduced the latency about 43% compared with conventional DFT based channel estimators.

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© 2010 by The Institute of Electronics, Information and Communication Engineers
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