Performance analysis of optimal channel estimation and multiuser detection in a randomly-spread CDMA channel

Takeuchi K, Vehkapera M, Tanaka T, Müller R (2010)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2010

Journal

Publisher: Springer Verlag (Germany)

Book Volume: 23

Pages Range: 22-34

Journal Issue: 1

DOI: 10.1007/s11424-010-9278-z

Abstract

This paper analyzes performance of optimal channel estimation and multiuser detection (MUD) in a block-fading code-division multiple-access (CDMA) channel on the assumptions of random spreading and large-system limit, by using the replica method developed in statistical mechanics. The authors find that the asymptotic spectral efficiency of the linear minimum mean-squared error (LMMSE) MUD which was proposed and analyzed by Evans and Tse in 2000 is indistinguishable from that of the optimal MUD for small system loads. Our results imply that performance of MUD scarcely improves even if one spends more computational cost than that of the LMMSE MUD, i. e., at most the cube of the number of users, on the above-described conditions. © 2010 Institute of Systems Science, Academy of Mathematics and Systems Science, CAS and Springer-Verlag Berlin Heidelberg.

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How to cite

APA:

Takeuchi, K., Vehkapera, M., Tanaka, T., & Müller, R. (2010). Performance analysis of optimal channel estimation and multiuser detection in a randomly-spread CDMA channel. Journal of Systems Science & Complexity, 23(1), 22-34. https://dx.doi.org/10.1007/s11424-010-9278-z

MLA:

Takeuchi, Keigo, et al. "Performance analysis of optimal channel estimation and multiuser detection in a randomly-spread CDMA channel." Journal of Systems Science & Complexity 23.1 (2010): 22-34.

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