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Data-aided channel estimation for MC-CDMA systems with transmit diversity in wireless channels
- Source :
-
Signal Processing . Nov2004, Vol. 84 Issue 11, p2041-2053. 13p. - Publication Year :
- 2004
-
Abstract
- In this paper, we address the problem of data-aided channel estimation in an MC-CDMA system with multiple transmitting antennas. First, we take into consideration a method proposed for OFDM with transmit diversity that relies on the frequency correlation of adjacent subchannels. Then, we propose a new method based on the assumption of a channel slowly varying with time. The performance of the two estimators has been evaluated in terms of mean square error (MSE) of channel estimates and bit error rate (BER), considering a different number of active users in the downlink case. We have considered two channels with different frequency selectivity. The results show that in the presence of a frequency selective channel the proposed method outperforms the method based on frequency correlation and it behaves more robustly against multi-user interference. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 01651684
- Volume :
- 84
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Signal Processing
- Publication Type :
- Academic Journal
- Accession number :
- 14581012
- Full Text :
- https://doi.org/10.1016/j.sigpro.2004.07.015