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
MIMO 통신 시스템은 시스템 용량을 늘리고 스펙트럼 효율성을 향상시키는 방법으로 연구되어 왔습니다. 본 논문에서는 MLD(Maximum Likelihood Decision) 알고리즘을 사용하는 MIMO 통신의 한 형태인 SDM(OFDM-SDM) 시스템을 사용하는 코딩된 OFDM 시스템에서 연판정 Viterbi 디코딩을 위한 새로운 분기 메트릭 생성 방법을 제안합니다. 코딩된 OFDM 시스템에서 FEC(순방향 오류 정정)를 위한 분기 메트릭은 일반적으로 수신된 부반송파 전력 레벨과 성상점 가능성을 기반으로 계산됩니다. 이러한 기존 접근 방식은 OFDM-SDM 시스템에서는 실패합니다. 제안된 방법에서는 MLD 알고리즘을 통해 계산된 우도를 기반으로 분기 메트릭을 도출하여 FEC 성능을 효과적으로 향상시킨다. 그런 다음, 100MHz 대역폭에서 20Mbit/s 이상의 데이터 전송률을 갖는 무선 LAN을 구현하기 위해 코딩된 OFDM-SDM의 가용성을 컴퓨터 시뮬레이션으로 계산한 필수 CNR을 사용하여 사무실 환경에서 평가합니다. 평가 결과 OFDM-SDM은 사무실 환경에서 100Mbit/s를 실현할 가능성이 있는 것으로 나타났습니다.
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Satoru HORI, Masato MIZOGUCHI, Tetsu SAKATA, Masahiro MORIKURA, "A New Branch Metric Generation Method for Soft-Decision Viterbi Decoding in Coded OFDM-SDM Systems Employing MLD over Frequency Selective MIMO Channels" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 7, pp. 1675-1684, July 2002, doi: .
Abstract: MIMO communication systems have been studied as a way to increase system capacity and to improve spectrum efficiency. This paper proposes a novel branch metric generation method for soft-decision Viterbi decoding in coded OFDM systems employing SDM (OFDM-SDM) systems, one form of MIMO communication, that employ the maximum likelihood decision (MLD) algorithm. In coded OFDM systems, the branch metric for forward error correction (FEC) is normally calculated based on received sub-carrier power level and the constellation point likelihood. This conventional approach fails in OFDM-SDM systems. In the proposed method, branch metric is derived based on the likelihood calculated by MLD algorithm, which improves FEC performance effectively. Then, availability of coded OFDM-SDM to realize wireless LANs with data rate above 100 Mbit/s in a bandwidth of 20 MHz is evaluated in office environments using required CNR calculated by computer simulation. The evaluation indicates that OFDM-SDM has the possibility of realizing 100 Mbit/s in office environments.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_7_1675/_p
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@ARTICLE{e85-a_7_1675,
author={Satoru HORI, Masato MIZOGUCHI, Tetsu SAKATA, Masahiro MORIKURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A New Branch Metric Generation Method for Soft-Decision Viterbi Decoding in Coded OFDM-SDM Systems Employing MLD over Frequency Selective MIMO Channels},
year={2002},
volume={E85-A},
number={7},
pages={1675-1684},
abstract={MIMO communication systems have been studied as a way to increase system capacity and to improve spectrum efficiency. This paper proposes a novel branch metric generation method for soft-decision Viterbi decoding in coded OFDM systems employing SDM (OFDM-SDM) systems, one form of MIMO communication, that employ the maximum likelihood decision (MLD) algorithm. In coded OFDM systems, the branch metric for forward error correction (FEC) is normally calculated based on received sub-carrier power level and the constellation point likelihood. This conventional approach fails in OFDM-SDM systems. In the proposed method, branch metric is derived based on the likelihood calculated by MLD algorithm, which improves FEC performance effectively. Then, availability of coded OFDM-SDM to realize wireless LANs with data rate above 100 Mbit/s in a bandwidth of 20 MHz is evaluated in office environments using required CNR calculated by computer simulation. The evaluation indicates that OFDM-SDM has the possibility of realizing 100 Mbit/s in office environments.},
keywords={},
doi={},
ISSN={},
month={July},}
부
TY - JOUR
TI - A New Branch Metric Generation Method for Soft-Decision Viterbi Decoding in Coded OFDM-SDM Systems Employing MLD over Frequency Selective MIMO Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1675
EP - 1684
AU - Satoru HORI
AU - Masato MIZOGUCHI
AU - Tetsu SAKATA
AU - Masahiro MORIKURA
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 7
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - July 2002
AB - MIMO communication systems have been studied as a way to increase system capacity and to improve spectrum efficiency. This paper proposes a novel branch metric generation method for soft-decision Viterbi decoding in coded OFDM systems employing SDM (OFDM-SDM) systems, one form of MIMO communication, that employ the maximum likelihood decision (MLD) algorithm. In coded OFDM systems, the branch metric for forward error correction (FEC) is normally calculated based on received sub-carrier power level and the constellation point likelihood. This conventional approach fails in OFDM-SDM systems. In the proposed method, branch metric is derived based on the likelihood calculated by MLD algorithm, which improves FEC performance effectively. Then, availability of coded OFDM-SDM to realize wireless LANs with data rate above 100 Mbit/s in a bandwidth of 20 MHz is evaluated in office environments using required CNR calculated by computer simulation. The evaluation indicates that OFDM-SDM has the possibility of realizing 100 Mbit/s in office environments.
ER -