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

Author

Lee, Jae Chan ; Han, Dong Seog ; Park, Soonchul

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Daegu, South Korea

Volume

55

Issue

2

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

316

Lastpage

321

Abstract

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 conditions¹.

Keywords

OFDM modulation; channel estimation; digital video broadcasting; interpolation; DVB-T; OFDM system; channel information; data subcarriers; digital video broadcasting-terrestrial; interpolation; least square channel estimation; long delay channel; orthogonal frequency division multiplexing system; path separation; single frequency network; Channel estimation; Computer science; Delay effects; Delay estimation; Digital video broadcasting; Filters; Frequency domain analysis; Frequency estimation; Interpolation; OFDM; OFDM, DVB-T, Channel estimation, SFN; Path separation;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2009.5174387

Filename

5174387