Title :
1.5 GHz band portable telephone for personal digital cellular system
Author :
Kobayashi, Katsumi ; Chiba, Kohji ; Takami, Tadao
Author_Institution :
Dept. of Res. & Dev., NTT Mobile Commun. Network Inc., Kanagawa, Japan
Abstract :
The 1.5 GHz pocket-size portable telephone has been developed by NTT DoCoMo for our personal digital cellular system. The telephone´s major design parameters, the configuration of the radio unit, software configuration, and interfaces to fax/modem adaptors are described. Besides being compact, the portable telephone features high speech quality, long stand-by time, high quality data communication and a user-friendly man-machine interface
Keywords :
cellular radio; data communication; digital radio; facsimile; land mobile radio; modems; personal communication networks; radiotelephony; telecommunication computing; telephone sets; user interfaces; 1.5 GHz; NTT; UHF; data communication; design parameters; fax/modem adaptors; interfaces; long stand-by time; personal digital cellular system; portable telephone; radio unit configuration; software configuration; speech quality; user-friendly man-machine interface; Batteries; Cellular networks; Data communication; Liquid crystal displays; Mobile communication; Modems; Research and development; Speech; Telephony; Urban areas;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345074
