TY - GEN
T1 - Improvement on diversity gain with filter bandwidth expansion in fractional sampling OFDM receiver
AU - Toshiya, Shinkai
AU - Nishimura, Haruki
AU - Sanada, Yukitoshi
PY - 2009
Y1 - 2009
N2 - A diversity scheme with fractional sampling (FS) in an OFDM receiver is 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.
AB - A diversity scheme with fractional sampling (FS) in an OFDM receiver is 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.
UR - http://www.scopus.com/inward/record.url?scp=74049146726&partnerID=8YFLogxK
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U2 - 10.1109/PACRIM.2009.5291263
DO - 10.1109/PACRIM.2009.5291263
M3 - Conference contribution
AN - SCOPUS:74049146726
SN - 9781424445615
T3 - IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings
SP - 832
EP - 836
BT - PACRIM 2009 - 2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing
T2 - PACRIM 2009 - 2009 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing
Y2 - 23 August 2009 through 26 August 2009
ER -