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
동기식 CDMA 시스템에서는 다중 접속 간섭을 줄이기 위해 직교 확산 시퀀스가 사용됩니다. 그러나 전파 채널의 주파수 선택성이 강화됨에 따라 경로 간 간섭이 증가하여 서로 다른 사용자 간의 직교성이 감소하는 경향이 있습니다. 본 논문에서는 다양한 이진 및 비이진 직교 시퀀스에 대해 논의합니다. 서로 다른 사용자 간의 직교성을 유지하기 위해 일반화된 직교성의 새로운 개념이 정의되고 이진, 4상 및 비이진 코드 시퀀스를 포함하여 해당 시퀀스가 제시됩니다. 단순화된 동기식 CDMA 시스템 모델을 기반으로 관련 시스템 성능도 분석되어 다양한 직교 및 일반화된 직교 확산 시퀀스에 대해 비교됩니다. 우리의 분석 및 시뮬레이션 결과는 일반화된 직교 코드 시퀀스가 기존 직교 코드 시퀀스에 비해 다중 경로 전파 채널에서 실제로 더 강력하다는 것을 보여줍니다.
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부
Pingzhi FAN, Li HAO, "Generalized Orthogonal Sequences and Their Applications in Synchronous CDMA Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E83-A, no. 11, pp. 2054-2069, November 2000, doi: .
Abstract: In synchronous CDMA system, the orthogonal spreading sequences are employed to reduce the multiple access interference. However, as the frequency selectivity of the propagation channel strengthens, the orthogonality among different users tends to diminish because of increasing inter-path interference. In this paper, various binary and nonbinary orthogonal sequences are discussed. In order to maintain the orthogonality among different users, a new concept of generalized orthogonality is defined and the corresponding sequences are presented, including binary, quadriphase and nonbinary code sequences. Based on a simplified synchronous CDMA system model, the related system performance is also analyzed and compared for different orthogonal and generalized orthogonal spreading sequences. Our analytical and simulation results show that the generalized orthogonal code sequences are indeed more robust in the multipath propagation channels, compared with the traditional orthogonal code sequences.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e83-a_11_2054/_p
부
@ARTICLE{e83-a_11_2054,
author={Pingzhi FAN, Li HAO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Generalized Orthogonal Sequences and Their Applications in Synchronous CDMA Systems},
year={2000},
volume={E83-A},
number={11},
pages={2054-2069},
abstract={In synchronous CDMA system, the orthogonal spreading sequences are employed to reduce the multiple access interference. However, as the frequency selectivity of the propagation channel strengthens, the orthogonality among different users tends to diminish because of increasing inter-path interference. In this paper, various binary and nonbinary orthogonal sequences are discussed. In order to maintain the orthogonality among different users, a new concept of generalized orthogonality is defined and the corresponding sequences are presented, including binary, quadriphase and nonbinary code sequences. Based on a simplified synchronous CDMA system model, the related system performance is also analyzed and compared for different orthogonal and generalized orthogonal spreading sequences. Our analytical and simulation results show that the generalized orthogonal code sequences are indeed more robust in the multipath propagation channels, compared with the traditional orthogonal code sequences.},
keywords={},
doi={},
ISSN={},
month={November},}
부
TY - JOUR
TI - Generalized Orthogonal Sequences and Their Applications in Synchronous CDMA Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2054
EP - 2069
AU - Pingzhi FAN
AU - Li HAO
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E83-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2000
AB - In synchronous CDMA system, the orthogonal spreading sequences are employed to reduce the multiple access interference. However, as the frequency selectivity of the propagation channel strengthens, the orthogonality among different users tends to diminish because of increasing inter-path interference. In this paper, various binary and nonbinary orthogonal sequences are discussed. In order to maintain the orthogonality among different users, a new concept of generalized orthogonality is defined and the corresponding sequences are presented, including binary, quadriphase and nonbinary code sequences. Based on a simplified synchronous CDMA system model, the related system performance is also analyzed and compared for different orthogonal and generalized orthogonal spreading sequences. Our analytical and simulation results show that the generalized orthogonal code sequences are indeed more robust in the multipath propagation channels, compared with the traditional orthogonal code sequences.
ER -