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Simple Blind Channel Estimation Scheme for Downlink MC-CDMA Systems
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 Title & Authors
Simple Blind Channel Estimation Scheme for Downlink MC-CDMA Systems
Seo, Bang-Won;
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 Abstract
In multicarrier code-division multiple access (MC-CDMA) systems, conventional blind channel estimation schemes require the inverse matrix calculation or eigenvalue decomposition of the received signal covariance matrix. Therefore, computational complexity of the conventional schemes is too high and they cannot be employed in downlink systems. In this paper, we propose a simple blind channel estimation scheme with very low computational complexity. Simulation results show that the proposed scheme has better channel estimation and bit error rate (BER) performance than the conventional schemes.
 Keywords
MC-CDMA;downlink system;channel estimation;blind estimation;
 Language
Korean
 Cited by
 References
1.
S. Hara and R. Prasad, "Design and performance of multicarrier CDMA system in frequency- selective Rayleigh fading channels," IEEE Trans. Vehic. Technol., vol. 48, pp. 1584-1595, Sep. 1999. crossref(new window)

2.
S. N. Nazar and I. N. Psaromiligkos, "Minimum variance channel estimation in MC-CDMA systems: Bias analysis and Cramer-Rao bound," IEEE Trans. Signal Process., vol. 55, pp. 3143-3148, Jun. 2007. crossref(new window)

3.
M. K. Tsatsanis and Z. Xu, "Performance analysis of minimum variance CDMA receivers," IEEE Trans. Signal Process., vol. 46, pp. 3014-3022, Nov. 1998. crossref(new window)

4.
K. Zarifi and A. B. Gershman, "Asymptotic performance analysis of blind minimum output energy receivers for large DS-CDMA systems," IEEE Trans. Signal Process., vol. 56, pp. 650-663, Feb. 2008. crossref(new window)

5.
W. Kang and B. Champagne, "Subspace-based blind channel estimation: Generalization and performance analysis," IEEE Trans. Signal Process., Vol. 53, pp. 1151-1162, Mar. 2005. crossref(new window)

6.
Z. Xu, P. Liu, and X. Wang, "Blind multiuser detection: From MOE to subspace methods," IEEE Trans. Signal Process., vol. 52, pp. 510-524, Feb. 2004.

7.
H. Liu and G. Xu, "A subspace method for signature waveform estimation in synchronous CDMA systems," IEEE Trans. Commun., vol. 44, pp. 1346-1354, Oct. 1996. crossref(new window)

8.
G. H. Golub, Matrix Computation, 3rd Edition, The Johns Hopkins University Press, 1996.

9.
F. Gao and A. Nallanathan, "Blind channel estimation for OFDM systems via a generalized precoding," IEEE Trans. Vehic. Technol., vol. 56, pp 1155-1164. May 2007. crossref(new window)

10.
H. Cheon and D. Hong, "Effect of channel estimation error in OFDM-based WLAN," IEEE Commun. Letters, vol. 6, pp.190-192, May 2002. crossref(new window)