Title :
Dual mode mobile unit for next generation digital narrow channel cellular telephone system
Author_Institution :
AT&T Bell Lab., Whippany, NJ, USA
Abstract :
The topology required of a dual mode cellular telephone mobile unit, which can operate either in the conventional US 30 kHz analog FM mode or in a proposed 10 kHz digital channel is described. This 10 kHz channel is envisioned to be an important step in cellular mobile telephony because it triples the number of channels/MHz of bandwidth and provides error-controlled voice/data transmission with an ISDN-like interface. A transceiver block diagram is shown and performance specifications are presented. Parameters for 10 kHz radio transmission parameters, modulation formats, and voice coding techniques are discussed
Keywords :
ISDN; cellular radio; digital communication systems; radiotelephony; transceivers; 10 kHz; 30 kHz; ISDN-like interface; US analog FM mode; digital channel; dual mode cellular telephone mobile unit; error-controlled voice/data transmission; modulation formats; next generation digital narrow channel cellular telephone system; performance specifications; transceiver block diagram; voice coding techniques; Bandwidth; Demodulation; Error correction; Frequency modulation; Frequency synthesizers; Lighting control; Local oscillators; Telephony; Topology; Transceivers;
Conference_Titel :
Vehicular Technology Conference, 1988, IEEE 38th
Conference_Location :
Philadelphia, PA
DOI :
10.1109/VETEC.1988.195415
