Channel estimation based on path separation for DVB-T in long delay situations

A least square (LS) channel estimation with pilots uses interpolation to obtain the channel information for the positions of data subcarriers in orthogonal frequency division multiplexing (OFDM) systems. However, the interpolation introduces estimation errors in long delay channels that usually happ...

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Bibliographic Details
Published in:IEEE transactions on consumer electronics 2009-05, Vol.55 (2), p.316-321
Main Authors: Lee, Jae, Han, Dong, Park, Soonchul
Format: Article
Language:English
Subjects:
Algorithms
Channel estimation
Channels
Computer science
Delay
Delay effects
Delay estimation
Digital video broadcasting
DVB-T
Electronics
Filters
Frequency domain analysis
Frequency estimation
Interpolation
Least squares method
OFDM
Orthogonal Frequency Division Multiplexing
Path separation
Pilots
SFN
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Summary:A least square (LS) channel estimation with pilots uses interpolation to obtain the channel information for the positions of data subcarriers in orthogonal frequency division multiplexing (OFDM) systems. However, the interpolation introduces estimation errors in long delay channels that usually happen in single frequency networks (SFNs). In this paper, we propose an algorithm that estimates the accurate channel information by separating channel paths. The performance is compared with conventional algorithms for DVB-T in SFN conditions 1 .
ISSN:0098-3063
1558-4127
DOI:10.1109/TCE.2009.5174387