Title :
A novel uplink channel estimation in OFDM-CDMA systems
Author :
Kan Zheng ; Zheng, Kan ; Wang, Wenbo
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., China
fDate :
2/1/2004 12:00:00 AM
Abstract :
Orthogonal frequency division multiplexing-code division multiplex access (OFDM-CDMA) is one of the best candidates for the future broadband wireless multimedia communication systems. This paper proposes a novel channel estimation algorithm for OFDM-CDMA systems on the uplink. With reasonable constraint and well-designed preambles for each user, the DFT-based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system overhead. Computer simulation demonstrates effectiveness of this method and conclusion is followed.
Keywords :
OFDM modulation; channel estimation; code division multiple access; discrete Fourier transforms; radio links; DFT; OFDM-CDMA systems; broadband wireless multimedia communication system; code division multiple access; discrete Fourier transform; orthogonal frequency division multiplexing; uplink channel estimation; Broadband communication; Channel estimation; Digital audio broadcasting; Downlink; Fading; Frequency division multiplexing; Frequency estimation; Multiaccess communication; OFDM modulation; Wireless communication;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2004.1277851
