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

Beitrag bei einer Tagung
(Konferenzbeitrag)


Details zur Publikation

Autorinnen und Autoren: 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-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

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


Einrichtungen weiterer Autorinnen und Autoren

Kyoto University / 京都大学 Kyōto daigaku
NTNU Trondheim - Norwegian University of Science and Technology


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. In Proceedings of the 2008 IEEE International Symposium on Information Theory, ISIT 2008 (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.

BibTeX: 

Zuletzt aktualisiert 2019-21-07 um 07:28