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
Skim berulang untuk penyahmodulasian MFormat isyarat ortogonal dalam sistem capaian berbilang pembahagian kod jujukan terus (DS-CDMA) dicadangkan dan dibandingkan dengan penerima penapis tidak koheren standard yang dipadankan. Pembatalan gangguan, iaitu, penyingkiran (anggaran) gangguan akses berbilang (MAI) melalui penolakan dikaji. Sistem yang dipertimbangkan adalah serupa dengan pautan atas (pautan terbalik) sistem IS-95. Oleh itu, isyarat yang diterima daripada pengguna serentak adalah tak segerak, dan tiada isyarat perintis tersedia untuk anggaran saluran. Algoritma terarah keputusan dicadangkan untuk menganggarkan keuntungan saluran kompleks yang berubah-ubah masa bagi saluran berbilang laluan. Penerima dinilai pada saluran pudar Rayleigh dan ditunjukkan untuk memberikan keuntungan kapasiti yang besar berbanding dengan penerima konvensional.
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Salinan
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
Salinan
@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},}
Salinan
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 -