NDLI: Subspace-based estimation method of uplink FIR channel in MC-CDMA system without cyclic prefix over frequency-selective fading channel

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Subspace-based estimation method of uplink FIR channel in MC-CDMA system without cyclic prefix over frequency-selective fading channel

Content Provider	IEEE Xplore Digital Library
Author	Xiaojun Wu Qinye Yin Jianguo Zhang
Copyright Year	2002
Description	Author affiliation: Inst. of Inf. Eng., Xi'an Jiaotong Univ., China (Xiaojun Wu; Qinye Yin; Jianguo Zhang)
Abstract	The multipath nature of the wireless channel can be described as a finite impulse response (FIR) filter, which easily results in hostile intersymbol interference (ISI). Usually, multicarrier code-division multiple access (MC-CDMA) systems combat the hostile ISI with the aid of the cyclic prefix (CP). Nevertheless, the elimination of ISI in MC-CDMA systems is at the cost of reduction in spectral efficiency. To recover spectral efficiency, it is meaningful to investigate MC-CDMA systems without CP. This paper explores the estimation of the uplink FIR channel in the MC-CDMA system without CP. We interpret the MC-CDMA system without CP as an equivalent time-domain ISI-corrupted direct sequence (DS-) CDMA system. Based on subspace techniques, an uplink FIR channel estimation scheme is derived for the MC-CDMA system without CP. Simulations demonstrate the validity and the performance of the proposed uplink FIR channel estimation scheme.
Sponsorship	IEEE IEEE Circuits & Syst. Soc
File Size	404744
File Format	PDF
ISBN	0780374487
DOI	10.1109/ISCAS.2002.1009815
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite impulse response filter Multicarrier code division multiple access Multiaccess communication Intersymbol interference Baseband Channel estimation Multiple access interference Wireless communication Frequency estimation Frequency-selective fading channels
Content Type	Text
Resource Type	Article

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