Title :
Mobile teletext reception using signal processing in frequency domain
Author :
Tsuzuku, Aiichiro ; Ishikawa, Yoshihiko
Author_Institution :
Minist. of Posts & Telecommun., Tokyo, Japan
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;
Conference_Titel :
Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE
Conference_Location :
Dallas, TX
DOI :
10.1109/GLOCOM.1989.64007
