Replica analysis of general multiuser detection in MIMO DS-CDMA channels with imperfect CSI

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Details zur Publikation

Autor(en): Takeuchi K, Vehkaperä M, Tanaka T, Müller R
Jahr der Veröffentlichung: 2008
Seitenbereich: 514-518
ISBN: 9781424422579


Abstract


We consider impacts of channel estimation errors on performance of general multiuser detectors in MIMO DS-CDMA channels. We evaluate their performance in terms of asymptotic spectral efficiency, which is obtained via decoupling structure, by using the replica method. Numerical results imply that the performance of LMMSE detection is very close to that of MMSE detection for small system loads. Furthermore, we find that the spectral efficiency of MMSE detection grows discontinuously with the length of pilot sequences for large system loads, and that the critical length is close to the optimal length. While it is indistinguishable from that of LMMSE detection for short pilot sequences, the gap between the two is significantly large if the length of pilot sequences is longer than the critical length. © 2008 IEEE.



FAU-Autoren / FAU-Herausgeber

Müller, Ralf Prof. Dr.-Ing.
Professur für Informationsübertragung


Zitierweisen

APA:
Takeuchi, K., Vehkaperä, M., Tanaka, T., & Müller, R. (2008). Replica analysis of general multiuser detection in MIMO DS-CDMA channels with imperfect CSI. (pp. 514-518). Toronto, ON.

MLA:
Takeuchi, Keigo, et al. "Replica analysis of general multiuser detection in MIMO DS-CDMA channels with imperfect CSI." Proceedings of the 2008 IEEE International Symposium on Information Theory, ISIT 2008, Toronto, ON 2008. 514-518.

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Zuletzt aktualisiert 2018-19-04 um 03:18