Presentation 2011-12-16
An Improvement Method of Frequency Spectrum Based OFDM Adaptive Array which Suppresses the Multipaths Beyond the Guard Interval
Shosuke NAKAMURA, Tadatomo SATO,
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Abstract(in English) In this paper, we focus on the temporal variation of the amplitude spectrum of received OFDM signal caused by long delay multipath wave over Guard Interval, we propose two improvement methods that suppress long delay multipath wave over Guard Interval and improve the bit error rate performance. One is the use of Short Pass Filter which cuts the delay waves over Guard Interval before averaging the amplitude spectrum for high-speed convergence of the weight vector of adaptive array. The other is the selective diversity which runs convergence algorithm from some initial weight vectors and demodulate data by using the weight vector of the largest amplitude spectrum in each subcarrier. We show the performance of improvement methods via computer simulations.
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Keyword(in English) OFDM / adaptive array / frequency spectrum / blind control
Paper # WBS2011-44
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Committee WBS
Conference Date 2011/12/8(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An Improvement Method of Frequency Spectrum Based OFDM Adaptive Array which Suppresses the Multipaths Beyond the Guard Interval
Sub Title (in English)
Keyword(1) OFDM
Keyword(2) adaptive array
Keyword(3) frequency spectrum
Keyword(4) blind control
1st Author's Name Shosuke NAKAMURA
1st Author's Affiliation Faculty of Knowledge Engineering, Tokyo City University()
2nd Author's Name Tadatomo SATO
2nd Author's Affiliation Faculty of Knowledge Engineering, Tokyo City University
Date 2011-12-16
Paper # WBS2011-44
Volume (vol) vol.111
Number (no) 340
Page pp.pp.-
#Pages 6
Date of Issue