Title :
Modulation techniques for digital cellular systems
Author :
Tarallo, Joseph A. ; Zysman, George I.
Author_Institution :
AT&T Bell Lab., Whippany, NJ, USA
Abstract :
A modulation technique is described that uses the properties of linear modulation techniques to achieve high spectral efficiency. When combined with high-quality low-bit-rate speech coding and channel coding, linear modulation provides a substantial increase in system capacity. A QDPSK system provides high-quality speech using a 10-kHz bandwidth, with better S/I protection ratios than the current analog system. A digital cellular system which uses QDPSK is discussed. Bit error rate and spectral efficiency data are presented
Keywords :
cellular radio; phase shift keying; 10 kHz; QDPSK; channel coding; digital cellular systems; modulation; spectral efficiency; speech coding; Bit error rate; Cellular networks; Channel coding; Decoding; Digital modulation; Fading; Power amplifiers; Protection; Radiofrequency amplifiers; Speech coding;
Conference_Titel :
Vehicular Technology Conference, 1988, IEEE 38th
Conference_Location :
Philadelphia, PA
DOI :
10.1109/VETEC.1988.195304
