Presentation 2008-03-13
A Study on SNR Estimation Method for OFDM System
Tomokazu Shimizu, Naoto Sasaoka, Yoshio Itoh,
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Abstract(in English) The zero forcing (ZF) and minimum mean squared error (MMSE) equalization have been proposed for an orthogonal frequency division multiplexing (OFDM) system. However ZF equalization have disadvantages to be difficult to equalize the channel in a low signal to noise ratio (SNR) environment. On the other hand, MMSE equalization have a potential to estimate the channel accurately in a low SNR environment. However, MMSE equalization requires to estimate SNR exactly. In addition, a cognitive radio system that is automatically able to compose the optimal communication system according to a channel needs SNR estimation. In this paper, we propose the SNR estimation based on a noise estimation scheme with a null sub-carrier.
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Keyword(in English) OFDM / SNR estimation / Null-subcarrier
Paper # SIS2007-72
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Committee SIS
Conference Date 2008/3/6(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on SNR Estimation Method for OFDM System
Sub Title (in English)
Keyword(1) OFDM
Keyword(2) SNR estimation
Keyword(3) Null-subcarrier
1st Author's Name Tomokazu Shimizu
1st Author's Affiliation Faculty of Engineering, tottori University()
2nd Author's Name Naoto Sasaoka
2nd Author's Affiliation Faculty of Engineering, tottori University
3rd Author's Name Yoshio Itoh
3rd Author's Affiliation Faculty of Engineering, tottori University
Date 2008-03-13
Paper # SIS2007-72
Volume (vol) vol.107
Number (no) 547
Page pp.pp.-
#Pages 6
Date of Issue