Digital transmission scheme for ISDB-T and reception characteristics of digital terrestrial television broadcasting system in Japan

Author

Nakahara, Syunji ; Okano, Masahiro ; Takada, Masayuki ; Kuroda, Toru

Author_Institution

NHK Sci. & Tech. Res. Labs., Tokyo, Japan

Volume

45

Issue

3

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

563

Lastpage

570

Abstract

We introduce a transmission scheme for ISDB-T, and proposes a soft-decision decoding technique for ISDB-T receivers to improve the reception performance under multipath distortion and interference from analog television signals. We propose two techniques that apply estimated the channel frequency response for each carrier to the derivation of soft-decision metrics in 64QAM-OFDM. We present Viterbi soft-decision decoding characteristics by these proposed techniques for AWGN transmission paths, multipath conditions. We also propose a soft-decision technique that erases the data of carriers exhibiting large disturbance

Keywords

OFDM modulation; Viterbi decoding; demodulation; digital television; multipath channels; quadrature amplitude modulation; television broadcasting; television interference; television receivers; television reception; 64QAM-OFDM signals; AWGN transmission paths; HDTV service; ISDB-T receivers; Japan; Terrestrial Integrated Services Digital Broadcasting; Viterbi soft-decision decoding; analog television signals; demodulation; digital terrestrial television broadcasting system; digital transmission; interference; multimedia broadcasting services; multipath distortion; multiprogram services; orthogonal frequency division multiplexing; reception performance; Communication standards; Data communication; Decoding; Digital multimedia broadcasting; Distortion; Frequency estimation; Frequency response; Multiplexing; TV interference; TV receivers;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.793541

Filename

793541