The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Skim kepelbagaian dengan Persampelan Pecahan (FS) dalam penerima OFDM telah disiasat baru-baru ini. Melalui FS, adalah mungkin untuk memisahkan komponen berbilang laluan dan memperoleh keuntungan kepelbagaian dalam sistem OFDM. Pembesaran lebar jalur bagi jumlah tindak balas frekuensi antara penapis jalur asas penghantaran dan penerimaan membolehkan skema FS mencapai kepelbagaian laluan. Walau bagaimanapun, penapis penghantaran perlu direka bentuk mengikut topeng spektrum piawaian wayarles seperti IEEE802.11a/g untuk mengelakkan gangguan kepada sistem komunikasi lain dan tindak balas frekuensi saluran komposit termasuk penapis penghantaran dan penerimaan sering kali ditetapkan kepada lebar jalur minimum untuk menghapuskan isyarat saluran bersebelahan. Untuk mencapai nisbah isyarat kepada hingar (SNR) maksimum, penapis yang sama biasanya digunakan dalam pemancar dan penerima. Dalam makalah ini, pertukaran antara kemerosotan SNR, gangguan saluran bersebelahan, dan keuntungan kepelbagaian akibat pembesaran lebar jalur penapis terima disiasat. Keputusan berangka daripada simulasi komputer menunjukkan bahawa prestasi BER dengan lebar jalur yang lebih luas dalam penerima menunjukkan prestasi yang lebih baik daripada itu dengan lebar jalur minimum untuk memaksimumkan SNR dalam keadaan tertentu.
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Salinan
Toshiya SHINKAI, Haruki NISHIMURA, Yukitoshi SANADA, "Improvement on Diversity Gain with Filter Bandwidth Enlargement in Fractional Sampling OFDM Receiver" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 6, pp. 1526-1533, June 2010, doi: 10.1587/transcom.E93.B.1526.
Abstract: A diversity scheme with Fractional Sampling (FS) in an OFDM receiver has been investigated recently. Through FS, it is possible to separate multipath components and obtain diversity gain in OFDM systems. Enlargement of the bandwidth of the total frequency response between transmit and receive baseband filters allows the FS scheme to achieve path diversity. However, the transmit filter has to be designed according to the spectrum mask of the wireless standards such as IEEE802.11a/g to avoid interference to the other communication systems and the frequency response of the composite channel including the transmit and receive filters has often been set to minimal bandwidth to eliminate adjacent channel signals. In order to achieve the maximum signal-to-noise ratio (SNR), the same filter is commonly used in the transmitter and the receiver. In this paper, the trade-off among the SNR deterioration, adjacent channel interference, and the diversity gain due to the enlargement of the bandwidth of the receive filter is investigated. Numerical results from computer simulations indicate that the BER performance with wider bandwidth in the receiver shows better performance than that with the minimal bandwidth for maximizing the SNR in certain conditions.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.1526/_p
Salinan
@ARTICLE{e93-b_6_1526,
author={Toshiya SHINKAI, Haruki NISHIMURA, Yukitoshi SANADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Improvement on Diversity Gain with Filter Bandwidth Enlargement in Fractional Sampling OFDM Receiver},
year={2010},
volume={E93-B},
number={6},
pages={1526-1533},
abstract={A diversity scheme with Fractional Sampling (FS) in an OFDM receiver has been investigated recently. Through FS, it is possible to separate multipath components and obtain diversity gain in OFDM systems. Enlargement of the bandwidth of the total frequency response between transmit and receive baseband filters allows the FS scheme to achieve path diversity. However, the transmit filter has to be designed according to the spectrum mask of the wireless standards such as IEEE802.11a/g to avoid interference to the other communication systems and the frequency response of the composite channel including the transmit and receive filters has often been set to minimal bandwidth to eliminate adjacent channel signals. In order to achieve the maximum signal-to-noise ratio (SNR), the same filter is commonly used in the transmitter and the receiver. In this paper, the trade-off among the SNR deterioration, adjacent channel interference, and the diversity gain due to the enlargement of the bandwidth of the receive filter is investigated. Numerical results from computer simulations indicate that the BER performance with wider bandwidth in the receiver shows better performance than that with the minimal bandwidth for maximizing the SNR in certain conditions.},
keywords={},
doi={10.1587/transcom.E93.B.1526},
ISSN={1745-1345},
month={June},}
Salinan
TY - JOUR
TI - Improvement on Diversity Gain with Filter Bandwidth Enlargement in Fractional Sampling OFDM Receiver
T2 - IEICE TRANSACTIONS on Communications
SP - 1526
EP - 1533
AU - Toshiya SHINKAI
AU - Haruki NISHIMURA
AU - Yukitoshi SANADA
PY - 2010
DO - 10.1587/transcom.E93.B.1526
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2010
AB - A diversity scheme with Fractional Sampling (FS) in an OFDM receiver has been investigated recently. Through FS, it is possible to separate multipath components and obtain diversity gain in OFDM systems. Enlargement of the bandwidth of the total frequency response between transmit and receive baseband filters allows the FS scheme to achieve path diversity. However, the transmit filter has to be designed according to the spectrum mask of the wireless standards such as IEEE802.11a/g to avoid interference to the other communication systems and the frequency response of the composite channel including the transmit and receive filters has often been set to minimal bandwidth to eliminate adjacent channel signals. In order to achieve the maximum signal-to-noise ratio (SNR), the same filter is commonly used in the transmitter and the receiver. In this paper, the trade-off among the SNR deterioration, adjacent channel interference, and the diversity gain due to the enlargement of the bandwidth of the receive filter is investigated. Numerical results from computer simulations indicate that the BER performance with wider bandwidth in the receiver shows better performance than that with the minimal bandwidth for maximizing the SNR in certain conditions.
ER -