A pilot aided averaging channel estimator for DVB-T2

Author

Zettas, Spiridon ; Lazaridis, Pavlos I. ; Zaharis, Zaharias D. ; Kasampalis, S. ; Cosmas, J.

Author_Institution

Sch. of Eng. & Design, Brunel Univ., Uxbridge, UK

fYear

2013

fDate

5-7 June 2013

Firstpage

1

Lastpage

8

Abstract

In DVB-T2 broadcasting applications, errors occur due to channel imperfections, reducing the system´s throughput. The use of a channel estimator and equalizer counteracts the channel induced distortions and thus improves the system´s Bit Error Rate (BER). In our study, a simple-to-implement channel estimator is proposed. It is based on averaging the sub-channel frequency responses of successive OFDM symbols in time, considering a very slow time-varying channel. In the frequency domain, spline interpolation is applied. The proposed estimator can be used in practical receivers with limited computation power and low memory capacity.

Keywords

digital television; error statistics; interpolation; splines (mathematics); wireless channels; BER; DVB-T2 broadcasting applications; bit error rate; channel imperfections; channel induced distortions; memory capacity; pilot aided averaging channel estimator; spline interpolation; subchannel frequency; time varying channel; Channel estimation; Digital video broadcasting; Indexes; OFDM; Quadrature amplitude modulation; Time-frequency analysis; Channel estimation; DVB-T2; OFDM; scattered pilots;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Multimedia Systems and Broadcasting (BMSB), 2013 IEEE International Symposium on

Conference_Location

London

ISSN

2155-5044

Type

conf

DOI

10.1109/BMSB.2013.6621712

Filename

6621712