NDLI: Channel estimation method for SFBC MIMO-OFDM based wireless two-way relay system in time-varying fading channel

Content Provider	IEEE Xplore Digital Library
Author	Mata, T. Mori, K. Kobayashi, H. Boonsrimuang, P.
Copyright Year	2014
Description	Author affiliation: Grad. Sch. of Eng., Mie Univ., Tsu, Japan (Mata, T.; Mori, K.; Kobayashi, H.) \|\| Fac. of Eng., King Mongkut's Inst. of Technol. Ladkrabang (KMITL), Bangkok, Thailand (Boonsrimuang, P.)
Abstract	This paper proposes SFBC MIMO-OFDM based two-way relay system to improve signal quality with keeping higher transmission efficiency. In the two-way relay system, each user terminal (UT) is required to estimate channel frequency responses (CFRs) for up and down links between both UTs and RS (Relay Station) precisely which are used in the demodulation of the other user's information data with frequency domain equalization. To satisfy the above requirement, this paper proposes a novel CFR estimation method for the SFBC MIMO-OFDM based two-way relay system which can achieve better CFR estimation accuracy and better BER performance even in the higher time-varying fading channel. The salient features of proposed system are to employ the SFBC technique both for data subcarriers in the pilot symbols and data symbols and to apply the Maximum Likelihood (ML) and Cubic Spline Interpolation methods to the estimated CFR at pilot subcarriers with Walsh codes in the estimation of CFR for the frequency axis and time axis, respectively. From the computer simulation results, this paper demonstrates the effectiveness of proposed system which can achieve higher signal quality with keeping higher transmission efficiency even in the higher time-varying fading channel.
Starting Page	71
Ending Page	76
File Size	1843594
Page Count	6
File Format	PDF
ISBN	9781479950492
e-ISBN	9781479950515
DOI	10.1109/CCE.2014.6916682
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-07-30
Publisher Place	Vietnam
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Accuracy SFBC OFDM MIMO-OFDM MIMO Nickel time-varying fading channel Antennas Equations CFR the self-information Manganese
Content Type	Text
Resource Type	Article

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