Presentation 2009-01-23
Improvement on Diversity Gain with Filter Bandwidth Expansion in Fractional Sampling OFDM Receiver
Toshiya SHINKAI, Haruki NISHIMURA, Yukitoshi SANADA,
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Abstract(in English) A diversity scheme with fractional sampling (FS) in an OFDM receiver has been proposed investigated recently. Through FS, it is possible to separate multipath components and obtain diversity gain in the OFDM system. Expansion of the bandwidth of the total response including transmit and receive baseband filters allows the FS scheme to achieve path diversity. However, the transmit filter is designed according to the spectrum mask of the standards to avoid interference to the other communication systems. In order to achieve the maximum SNR, the same filter is commonly used in the transmitter and the receiver. In this paper, the trade-off between the SNR deterioration and the diversity gain due to the total response larger than the minimal bandwidth is investigated. Numerical results through computer simulation indicate that BER performance with the receive filter of non-minimal bandwidth shows better performance than that with the filter for maximizing the SNR in certain conditions.
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Keyword(in English) Fractional Sampling / OFDM / multipath / diversity
Paper # SR2008-76
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Conference Date 2009/1/15(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Improvement on Diversity Gain with Filter Bandwidth Expansion in Fractional Sampling OFDM Receiver
Sub Title (in English)
Keyword(1) Fractional Sampling
Keyword(2) OFDM
Keyword(3) multipath
Keyword(4) diversity
1st Author's Name Toshiya SHINKAI
1st Author's Affiliation Dept. of Electronics and Electrical Engineering, Keio University()
2nd Author's Name Haruki NISHIMURA
2nd Author's Affiliation Dept. of Electronics and Electrical Engineering, Keio University
3rd Author's Name Yukitoshi SANADA
3rd Author's Affiliation Dept. of Electronics and Electrical Engineering, Keio University
Date 2009-01-23
Paper # SR2008-76
Volume (vol) vol.108
Number (no) 400
Page pp.pp.-
#Pages 5
Date of Issue