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
Kertas kerja ini menggunakan pengesanan berbilang pengguna berulang yang menggunakan skim anggaran saluran baharu kepada akses berbilang bahagian celahan berbilang pembawa (MC-IDMA), dipanggil OFDM-IDMA, yang dijangka menawarkan kecekapan spektrum yang dipertingkatkan dalam komunikasi mudah alih. Pemancar MC-IDMA menggunakan kedua-dua kod saluran kadar rendah dan interleaver cip individu untuk setiap pengguna. Penerima MC-IDMA, yang difokuskan pada kertas ini, mengulangi pengesanan berbilang pengguna berulang dan anggaran saluran terarah keputusan lembut (SDCE) dengan mengeksploitasi nisbah kemungkinan log (LLR) bagi bit berkod yang maksimum a posteriori Penyahkod saluran berasaskan (MAP) untuk semua pengguna sediakan. SDCE menganggarkan respons impuls saluran semua pengguna dengan algoritma kuasa dua terkecil (LMS), yang bertujuan untuk meminimumkan ralat kuasa dua min antara isyarat yang diterima dan replikanya. Kertas kerja ini menyiasat prestasi MC-IDMA yang menggunakan SDCE dan membandingkannya dengan tiga teknik MC-CDMA. Simulasi komputer menunjukkan bahawa MC-IDMA yang menggunakan SDCE mengatasi prestasi MC-CDMA sebaran masa dan MC-CDMA sebaran frekuensi, dan ia boleh mencapai prestasi kadar ralat bit yang hampir sama seperti MC-CDMA berjalin cip sambil memerlukan kerumitan yang lebih rendah.
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Salinan
Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, Li ZHANG, "Iterative Multiuser Detection with Soft Decision-Directed Channel Estimation for MC-IDMA and Performance Comparison with Chip-Interleaved MC-CDMA" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 5, pp. 1495-1503, May 2009, doi: 10.1587/transcom.E92.B.1495.
Abstract: This paper applies iterative multiuser detection employing a new channel estimation scheme to multicarrier interleave-division multiple access (MC-IDMA), called OFDM-IDMA, which is expected to offer improved spectral efficiency in mobile communications. The MC-IDMA transmitter uses both a low-rate channel code and an individual chip interleaver for each user. The MC-IDMA receiver, which this paper focuses upon, repeats the iterative multiuser detection and soft decision-directed channel estimation (SDCE) by exploiting log-likelihood ratios (LLRs) of the coded bits which the maximum a posteriori (MAP)-based channel decoders for all users provide. SDCE estimates channel impulse responses of all users by the least-mean-square (LMS) algorithm, which aims to minimize the mean squared error between the received signal and its replica. This paper investigates the performance of MC-IDMA employing SDCE and compares it with those of three MC-CDMA techniques. Computer simulations demonstrate that MC-IDMA employing SDCE outperforms time-spread MC-CDMA and frequency-spread MC-CDMA, and that it can achieve almost the same bit error rate performance as chip-interleaved MC-CDMA while requiring lower complexity.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.1495/_p
Salinan
@ARTICLE{e92-b_5_1495,
author={Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, Li ZHANG, },
journal={IEICE TRANSACTIONS on Communications},
title={Iterative Multiuser Detection with Soft Decision-Directed Channel Estimation for MC-IDMA and Performance Comparison with Chip-Interleaved MC-CDMA},
year={2009},
volume={E92-B},
number={5},
pages={1495-1503},
abstract={This paper applies iterative multiuser detection employing a new channel estimation scheme to multicarrier interleave-division multiple access (MC-IDMA), called OFDM-IDMA, which is expected to offer improved spectral efficiency in mobile communications. The MC-IDMA transmitter uses both a low-rate channel code and an individual chip interleaver for each user. The MC-IDMA receiver, which this paper focuses upon, repeats the iterative multiuser detection and soft decision-directed channel estimation (SDCE) by exploiting log-likelihood ratios (LLRs) of the coded bits which the maximum a posteriori (MAP)-based channel decoders for all users provide. SDCE estimates channel impulse responses of all users by the least-mean-square (LMS) algorithm, which aims to minimize the mean squared error between the received signal and its replica. This paper investigates the performance of MC-IDMA employing SDCE and compares it with those of three MC-CDMA techniques. Computer simulations demonstrate that MC-IDMA employing SDCE outperforms time-spread MC-CDMA and frequency-spread MC-CDMA, and that it can achieve almost the same bit error rate performance as chip-interleaved MC-CDMA while requiring lower complexity.},
keywords={},
doi={10.1587/transcom.E92.B.1495},
ISSN={1745-1345},
month={May},}
Salinan
TY - JOUR
TI - Iterative Multiuser Detection with Soft Decision-Directed Channel Estimation for MC-IDMA and Performance Comparison with Chip-Interleaved MC-CDMA
T2 - IEICE TRANSACTIONS on Communications
SP - 1495
EP - 1503
AU - Satoshi SUYAMA
AU - Hiroshi SUZUKI
AU - Kazuhiko FUKAWA
AU - Li ZHANG
PY - 2009
DO - 10.1587/transcom.E92.B.1495
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2009
AB - This paper applies iterative multiuser detection employing a new channel estimation scheme to multicarrier interleave-division multiple access (MC-IDMA), called OFDM-IDMA, which is expected to offer improved spectral efficiency in mobile communications. The MC-IDMA transmitter uses both a low-rate channel code and an individual chip interleaver for each user. The MC-IDMA receiver, which this paper focuses upon, repeats the iterative multiuser detection and soft decision-directed channel estimation (SDCE) by exploiting log-likelihood ratios (LLRs) of the coded bits which the maximum a posteriori (MAP)-based channel decoders for all users provide. SDCE estimates channel impulse responses of all users by the least-mean-square (LMS) algorithm, which aims to minimize the mean squared error between the received signal and its replica. This paper investigates the performance of MC-IDMA employing SDCE and compares it with those of three MC-CDMA techniques. Computer simulations demonstrate that MC-IDMA employing SDCE outperforms time-spread MC-CDMA and frequency-spread MC-CDMA, and that it can achieve almost the same bit error rate performance as chip-interleaved MC-CDMA while requiring lower complexity.
ER -