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
복조를 위한 반복 방식 MDS-CDMA(직접 시퀀스 코드 분할 다중 접속) 시스템의 95차 직교 신호 형식을 제안하고 표준 비간섭 정합 필터 수신기와 비교합니다. 간섭 제거, 즉 감산을 통한 다중 접속 간섭(MAI)의 (대략적인) 제거가 연구됩니다. 고려된 시스템은 IS-XNUMX 시스템의 업링크(역방향 링크)와 유사하다. 따라서 동시 사용자로부터 수신된 신호는 비동기식이며 채널 추정에 사용할 수 있는 파일럿 신호가 없습니다. 다중 경로 채널의 시변 복소 채널 이득을 추정하기 위한 의사 결정 알고리즘이 제안되었습니다. 수신기는 레일리 페이딩 채널에서 평가되었으며 기존 수신기에 비해 큰 용량 이득을 제공하는 것으로 나타났습니다.
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부
Erik G. STROM, Scott L. MILLER, "Iterative Demodulation and Channel Estimation of Orthogonal Signaling Formats in Asynchronous DS-CDMA Systems" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 3, pp. 442-451, March 2002, doi: .
Abstract: Iterative schemes for demodulating M-ary orthogonal signaling formats in direct-sequence code-division multiple access (DS-CDMA) systems are proposed and compared with the standard noncoherent matched filter receiver. Interference cancellation, i.e., (approximative) removal of the multiple access interference (MAI) by means of subtraction is studied. The considered system is similar to the uplink (reverse link) of an IS-95 system. Hence, the received signals from the concurrent users are asynchronous, and no pilot signals are available for channel estimation. A decision-directed algorithm is proposed for estimating the time-varying complex channel gains of a multipath channel. The receivers are evaluated on Rayleigh-fading channels and are shown to provide large capacity gains compared with the conventional receiver.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_3_442/_p
부
@ARTICLE{e85-c_3_442,
author={Erik G. STROM, Scott L. MILLER, },
journal={IEICE TRANSACTIONS on Electronics},
title={Iterative Demodulation and Channel Estimation of Orthogonal Signaling Formats in Asynchronous DS-CDMA Systems},
year={2002},
volume={E85-C},
number={3},
pages={442-451},
abstract={Iterative schemes for demodulating M-ary orthogonal signaling formats in direct-sequence code-division multiple access (DS-CDMA) systems are proposed and compared with the standard noncoherent matched filter receiver. Interference cancellation, i.e., (approximative) removal of the multiple access interference (MAI) by means of subtraction is studied. The considered system is similar to the uplink (reverse link) of an IS-95 system. Hence, the received signals from the concurrent users are asynchronous, and no pilot signals are available for channel estimation. A decision-directed algorithm is proposed for estimating the time-varying complex channel gains of a multipath channel. The receivers are evaluated on Rayleigh-fading channels and are shown to provide large capacity gains compared with the conventional receiver.},
keywords={},
doi={},
ISSN={},
month={March},}
부
TY - JOUR
TI - Iterative Demodulation and Channel Estimation of Orthogonal Signaling Formats in Asynchronous DS-CDMA Systems
T2 - IEICE TRANSACTIONS on Electronics
SP - 442
EP - 451
AU - Erik G. STROM
AU - Scott L. MILLER
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2002
AB - Iterative schemes for demodulating M-ary orthogonal signaling formats in direct-sequence code-division multiple access (DS-CDMA) systems are proposed and compared with the standard noncoherent matched filter receiver. Interference cancellation, i.e., (approximative) removal of the multiple access interference (MAI) by means of subtraction is studied. The considered system is similar to the uplink (reverse link) of an IS-95 system. Hence, the received signals from the concurrent users are asynchronous, and no pilot signals are available for channel estimation. A decision-directed algorithm is proposed for estimating the time-varying complex channel gains of a multipath channel. The receivers are evaluated on Rayleigh-fading channels and are shown to provide large capacity gains compared with the conventional receiver.
ER -