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Efficient Channel Estimation for OFDM and SC-FDE Schemes

Amaral, F. ; Dinis, R. ; Carvalho, P.

Efficient Channel Estimation for OFDM and SC-FDE Schemes, Proc IEEE International Conf. on Computer Communication and Networks - ICCCN, Maui, Hawaii, United States, Vol. -, pp. - - -, August, 2011.

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Abstract
In this paper we consider OFDM (Orthogonal
Frequency Division Multiplexing) and SC-FDE (Single-
Carrier with Frequency-Domain Equalization) schemes
where the channel is estimated with the help of training
blocks multiplexed with data blocks. It is shown that
SC-FDE schemes need more accurate channel estimates
than OFDM schemes with the same constellation. To
improve the performance, we consider iterative receivers
with joint detection and channel estimation. Our receivers
allow significant performance improvements, for both
OFDM and SC-FDE, with OFDM slightly outperforming
SC-FDE.