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A Study on Channel Estimation Methods for Time-Domain Spreading MC-CDMA Systems

Atsushi NAGATE, Teruya FUJII

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Summary :

As a candidate for the transmission technology of next generation mobile communication systems, time-domain spreading MC-CDMA systems have begun to attract much attention. In these systems, data and pilot symbols are spread in the time domain and code-multiplexed. To combat fading issues, we need to conduct channel estimation by using the code-multiplexed pilot symbols. Especially in next generation systems, frequency bands higher than those of current systems, which raise the maximum Doppler frequency, are expected to be used, so that a more powerful channel estimation method is expected. Considering this, we propose a channel estimation method for highly accurate channel estimation; it is a combination of a two-dimensional channel estimation method and an impulse response-based channel estimation method. We evaluate the proposed method by computer simulations.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.3 pp.980-991
Publication Date
2009/03/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.980
Type of Manuscript
PAPER
Category
Terrestrial Radio Communications

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