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
Akses berbilang pembahagian kod berbilang pembawa (MC-CDMA) ialah teknik capaian wayarles yang menjanjikan untuk sistem komunikasi mudah alih generasi akan datang, di mana perkhidmatan data paket jalur lebar akan mendominasi. Permintaan ulang automatik hibrid (HARQ) ialah teknik kawalan ralat yang sangat diperlukan untuk penghantaran data paket berkualiti tinggi. Prestasi pemprosesan HARQ bagi MC-CDMA berbilang kod merosot disebabkan kehadiran baki interferens antara kod (ICI) selepas penyamaan domain frekuensi (FDE). Untuk mengurangkan baki ICI dan meningkatkan prestasi daya pemprosesan, teknik pembatalan gangguan lembut domain frekuensi (FDSIC) boleh digunakan. Isu penting ialah penjanaan replika ICI sisa yang tepat untuk FDSIC. Dalam kertas ini, berkod semakan pariti berketumpatan rendah (berkod LDPC) MC-CDMA HARQ dipertimbangkan. Kami menjana replika ICI sisa daripada a-posteriori nisbah kemungkinan log (LLR) keluaran penyahkod LDPC dan menilai, melalui simulasi komputer, prestasi pemprosesan dalam saluran pudar Rayleigh terpilih frekuensi. Kami menunjukkan bahawa jika baki ICI dialih keluar, MC-CDMA boleh memberikan prestasi pemprosesan yang lebih baik daripada pemultipleksan bahagian frekuensi ortogon (OFDM).
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Salinan
Kaoru FUKUDA, Akinori NAKAJIMA, Fumiyuki ADACHI, "Throughput Performance of MC-CDMA HARQ Using ICI Cancellation" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 2, pp. 491-498, February 2009, doi: 10.1587/transcom.E92.B.491.
Abstract: Multi-carrier code division multiple access (MC-CDMA) is a promising wireless access technique for the next generation mobile communications systems, in which broadband packet data services will dominate. Hybrid automatic repeat request (HARQ) is an indispensable error control technique for high quality packet data transmission. The HARQ throughput performance of multi-code MC-CDMA degrades due to the presence of residual inter-code interference (ICI) after frequency-domain equalization (FDE). To reduce the residual ICI and improve the throughput performance, a frequency-domain soft interference cancellation (FDSIC) technique can be applied. An important issue is the generation of accurate residual ICI replica for FDSIC. In this paper, low-density parity-check coded (LDPC-coded) MC-CDMA HARQ is considered. We generate the residual ICI replica from a-posteriori log-likelihood ratio (LLR) of LDPC decoder output and evaluate, by computer simulation, the throughput performance in a frequency-selective Rayleigh fading channel. We show that if the residual ICI is removed, MC-CDMA can provide a throughput performance superior to orthogonal frequency division multiplexing (OFDM).
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.491/_p
Salinan
@ARTICLE{e92-b_2_491,
author={Kaoru FUKUDA, Akinori NAKAJIMA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Throughput Performance of MC-CDMA HARQ Using ICI Cancellation},
year={2009},
volume={E92-B},
number={2},
pages={491-498},
abstract={Multi-carrier code division multiple access (MC-CDMA) is a promising wireless access technique for the next generation mobile communications systems, in which broadband packet data services will dominate. Hybrid automatic repeat request (HARQ) is an indispensable error control technique for high quality packet data transmission. The HARQ throughput performance of multi-code MC-CDMA degrades due to the presence of residual inter-code interference (ICI) after frequency-domain equalization (FDE). To reduce the residual ICI and improve the throughput performance, a frequency-domain soft interference cancellation (FDSIC) technique can be applied. An important issue is the generation of accurate residual ICI replica for FDSIC. In this paper, low-density parity-check coded (LDPC-coded) MC-CDMA HARQ is considered. We generate the residual ICI replica from a-posteriori log-likelihood ratio (LLR) of LDPC decoder output and evaluate, by computer simulation, the throughput performance in a frequency-selective Rayleigh fading channel. We show that if the residual ICI is removed, MC-CDMA can provide a throughput performance superior to orthogonal frequency division multiplexing (OFDM).},
keywords={},
doi={10.1587/transcom.E92.B.491},
ISSN={1745-1345},
month={February},}
Salinan
TY - JOUR
TI - Throughput Performance of MC-CDMA HARQ Using ICI Cancellation
T2 - IEICE TRANSACTIONS on Communications
SP - 491
EP - 498
AU - Kaoru FUKUDA
AU - Akinori NAKAJIMA
AU - Fumiyuki ADACHI
PY - 2009
DO - 10.1587/transcom.E92.B.491
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2009
AB - Multi-carrier code division multiple access (MC-CDMA) is a promising wireless access technique for the next generation mobile communications systems, in which broadband packet data services will dominate. Hybrid automatic repeat request (HARQ) is an indispensable error control technique for high quality packet data transmission. The HARQ throughput performance of multi-code MC-CDMA degrades due to the presence of residual inter-code interference (ICI) after frequency-domain equalization (FDE). To reduce the residual ICI and improve the throughput performance, a frequency-domain soft interference cancellation (FDSIC) technique can be applied. An important issue is the generation of accurate residual ICI replica for FDSIC. In this paper, low-density parity-check coded (LDPC-coded) MC-CDMA HARQ is considered. We generate the residual ICI replica from a-posteriori log-likelihood ratio (LLR) of LDPC decoder output and evaluate, by computer simulation, the throughput performance in a frequency-selective Rayleigh fading channel. We show that if the residual ICI is removed, MC-CDMA can provide a throughput performance superior to orthogonal frequency division multiplexing (OFDM).
ER -