Mobile teletext reception using signal processing in frequency domain

Author

Tsuzuku, Aiichiro ; Ishikawa, Yoshihiko

Author_Institution

Minist. of Posts & Telecommun., Tokyo, Japan

fYear

1989

fDate

27-30 Nov 1989

Firstpage

423

Abstract

An experimental study of mobile teletext reception is described. Teletext in Japan is a broadband signal with 5.73 Mb/s; therefore, multipath interference is a serious problem in mobile reception, and it is impossible to obtain the teletext correctly by conventional methods. A multipath reduction technique using signal processing in the frequency domain is developed. In this technique, an original chirp signal is used for reference to identify radio propagation paths. In field trials, the delay profile is precisely obtained, and the bit error rate can be reduced. the error correction capability is also tested in a computer simulation. The proposed method was found to improve the error rate when the signal-to-noise ratio was greater than 20 dB

Keywords

error correction; frequency-domain analysis; interference suppression; mobile radio systems; radio reception; signal processing; teletext; 5.73 Mbit/s; broadband signal; computer simulation; delay profile; error correction capability; field trials; frequency domain; mobile teletext reception; multipath reduction technique; original chirp signal; radio propagation paths; signal processing; Bit error rate; Chirp; Delay; Error correction; Frequency domain analysis; Interference; Radio propagation; Radiofrequency identification; Signal processing; Teletext;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE

Conference_Location

Dallas, TX

Type

conf

DOI

10.1109/GLOCOM.1989.64007

Filename

64007