Large-system analysis of joint channel and data estimation for MIMO DS-CDMA systems

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Takeuchi K, Vehkaperä M, Tanaka T, Müller R
Zeitschrift: IEEE Transactions on Information Theory
Verlag: Institute of Electrical and Electronics Engineers (IEEE)
Jahr der Veröffentlichung: 2012
Band: 58
Heftnummer: 3
Seitenbereich: 1385-1412
ISSN: 0018-9448


Abstract


This paper presents a large-system analysis of the performance of joint channel estimation, multiuser detection, and per-user decoding (CE-MUDD) for randomly spread multiple-input multiple-output (MIMO) direct-sequence code-division multiple-access (DS-CDMA) systems. A suboptimal receiver based on successive decoding in conjunction with linear minimum mean-squared error (LMMSE) channel estimation is investigated. The replica method, developed in statistical mechanics, is used to evaluate the performance in the large-system limit, where the number of users and the spreading factor tend to infinity while their ratio and the number of transmit and receive antennas are kept constant. Joint CE-MUDD based on LMMSE channel estimation is compared to several methods of one-shot channel estimation, i.e., methods that do not utilize decoded data symbols to refine the initial channel estimates, in terms of spectral efficiency. Joint CE-MUDD is found to significantly reduce the rate loss caused by transmission of pilot signals when compared to the receivers based on one-shot channel estimation. This holds particularly for multiple-antenna systems. As a result, joint CE-MUDD can provide significant performance gains compared to the receivers based on one-shot channel estimation. © 2011 IEEE.



FAU-Autoren / FAU-Herausgeber

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


Zitierweisen

APA:
Takeuchi, K., Vehkaperä, M., Tanaka, T., & Müller, R. (2012). Large-system analysis of joint channel and data estimation for MIMO DS-CDMA systems. IEEE Transactions on Information Theory, 58(3), 1385-1412. https://dx.doi.org/10.1109/TIT.2011.2177757

MLA:
Takeuchi, Keigo, et al. "Large-system analysis of joint channel and data estimation for MIMO DS-CDMA systems." IEEE Transactions on Information Theory 58.3 (2012): 1385-1412.

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