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
Penyamaan domain frekuensi (FDE) berdasarkan kriteria ralat min kuasa dua minimum (MMSE) boleh memberikan prestasi kadar ralat bit (BER) yang lebih baik daripada gabungan rake. Untuk meningkatkan lagi prestasi BER, kepelbagaian penghantaran kelewatan kitaran (CDTD) boleh digunakan. CDTD secara serentak menghantar isyarat yang sama dari antena yang berbeza selepas menambah kelewatan kitaran yang berbeza untuk meningkatkan bilangan laluan perambatan yang setara. Walaupun penggunaan bersama CDTD dan MMSE-FDE untuk akses berbilang pembahagian kod jujukan langsung (DS-CDMA) mencapai keuntungan kepelbagaian frekuensi yang lebih besar, peningkatan prestasi BER dihadkan oleh baki gangguan antara cip (ICI) selepas FDE. Dalam kertas ini, kami mencadangkan FDE bersama dan penyebaran untuk DS-CDMA menggunakan CDTD. Penyamaan dan penyebaran dilakukan serentak dalam domain frekuensi untuk menekan baki ICI selepas FDE. Analisis BER bersyarat teori dibentangkan untuk keadaan saluran yang diberikan. Analisis BER disahkan oleh simulasi komputer.
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Salinan
Tetsuya YAMAMOTO, Kazuki TAKEDA, Fumiyuki ADACHI, "Joint Frequency-Domain Equalization and Despreading for Multi-Code DS-CDMA Using Cyclic Delay Transmit Diversity" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 5, pp. 1563-1572, May 2009, doi: 10.1587/transcom.E92.B.1563.
Abstract: Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can provide a better bit error rate (BER) performance than rake combining. To further improve the BER performance, cyclic delay transmit diversity (CDTD) can be used. CDTD simultaneously transmits the same signal from different antennas after adding different cyclic delays to increase the number of equivalent propagation paths. Although a joint use of CDTD and MMSE-FDE for direct sequence code division multiple access (DS-CDMA) achieves larger frequency diversity gain, the BER performance improvement is limited by the residual inter-chip interference (ICI) after FDE. In this paper, we propose joint FDE and despreading for DS-CDMA using CDTD. Equalization and despreading are simultaneously performed in the frequency-domain to suppress the residual ICI after FDE. A theoretical conditional BER analysis is presented for the given channel condition. The BER analysis is confirmed by computer simulation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.1563/_p
Salinan
@ARTICLE{e92-b_5_1563,
author={Tetsuya YAMAMOTO, Kazuki TAKEDA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Joint Frequency-Domain Equalization and Despreading for Multi-Code DS-CDMA Using Cyclic Delay Transmit Diversity},
year={2009},
volume={E92-B},
number={5},
pages={1563-1572},
abstract={Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can provide a better bit error rate (BER) performance than rake combining. To further improve the BER performance, cyclic delay transmit diversity (CDTD) can be used. CDTD simultaneously transmits the same signal from different antennas after adding different cyclic delays to increase the number of equivalent propagation paths. Although a joint use of CDTD and MMSE-FDE for direct sequence code division multiple access (DS-CDMA) achieves larger frequency diversity gain, the BER performance improvement is limited by the residual inter-chip interference (ICI) after FDE. In this paper, we propose joint FDE and despreading for DS-CDMA using CDTD. Equalization and despreading are simultaneously performed in the frequency-domain to suppress the residual ICI after FDE. A theoretical conditional BER analysis is presented for the given channel condition. The BER analysis is confirmed by computer simulation.},
keywords={},
doi={10.1587/transcom.E92.B.1563},
ISSN={1745-1345},
month={May},}
Salinan
TY - JOUR
TI - Joint Frequency-Domain Equalization and Despreading for Multi-Code DS-CDMA Using Cyclic Delay Transmit Diversity
T2 - IEICE TRANSACTIONS on Communications
SP - 1563
EP - 1572
AU - Tetsuya YAMAMOTO
AU - Kazuki TAKEDA
AU - Fumiyuki ADACHI
PY - 2009
DO - 10.1587/transcom.E92.B.1563
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2009
AB - Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can provide a better bit error rate (BER) performance than rake combining. To further improve the BER performance, cyclic delay transmit diversity (CDTD) can be used. CDTD simultaneously transmits the same signal from different antennas after adding different cyclic delays to increase the number of equivalent propagation paths. Although a joint use of CDTD and MMSE-FDE for direct sequence code division multiple access (DS-CDMA) achieves larger frequency diversity gain, the BER performance improvement is limited by the residual inter-chip interference (ICI) after FDE. In this paper, we propose joint FDE and despreading for DS-CDMA using CDTD. Equalization and despreading are simultaneously performed in the frequency-domain to suppress the residual ICI after FDE. A theoretical conditional BER analysis is presented for the given channel condition. The BER analysis is confirmed by computer simulation.
ER -