Multiple-access interference reduction for QS-CDMA systems with a novel class of polyphase sequences

In this paper, a new class of polyphase sequences for CDMA systems and its generation method are suggested, and the correlation properties of the sequence are investigated. The performance of the sequence in quasi-synchronous CDMA (QS-CDMA) systems is investigated under a frequency-selective, time-n...

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Published in:IEEE transactions on information theory 2000-07, Vol.46 (4), p.1448-1458
Main Authors: Seong Ill Park, So Ryoung Park, Iickho Song, Suehiro, N.
Format: Article
Language:English
Subjects:
Additives
Channels
Code division multiple access
Correlation
Gaussian
Information theory
Interference
Interference suppression
Noise
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description In this paper, a new class of polyphase sequences for CDMA systems and its generation method are suggested, and the correlation properties of the sequence are investigated. The performance of the sequence in quasi-synchronous CDMA (QS-CDMA) systems is investigated under a frequency-selective, time-nonselective, slow Nakagami fading channel with additive white Gaussian noise (AWGN). It is shown that the performance of the QS-CDMA systems using the suggested sequence is independent of the number of users and is much better than that using the PN sequence.
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subjects Additives
Channels
Code division multiple access
Correlation
Gaussian
Information theory
Interference
Interference suppression
Noise
title Multiple-access interference reduction for QS-CDMA systems with a novel class of polyphase sequences
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