Title :
Improvement of error performance of digital modulation in the mobile radios using a novel multi-level FSK-QTFSK (quaternary-phase transition FSK)
Author :
Horikoshi, Jun ; Kimura, Kazunori
Author_Institution :
Dept. of Electron. Eng., Gunma Univ., Japan
Abstract :
A modulation scheme, named QTFSK (quaternary-phase transition FSK) is proposed for digital mobile radio applications, especially when severe power saving is required. As QTFSK is essentially a continuous phase FSK modulation scheme, it is preferable for satellite-mobile systems. It is clarified theoretically and experimentally that the error performance is almost the same as that of QPSK in the Rayleigh fading channel. The main lobe of the signal spectrum is a little narrower than QPSK
Keywords :
Rayleigh channels; digital radio; error statistics; fading; frequency shift keying; mobile radio; QTFSK; Rayleigh fading channel; continuous phase FSK modulation; digital mobile radio; error performance; power saving; quaternary-phase transition FSK; satellite-mobile systems; signal spectrum; Bit error rate; Continuous phase modulation; Degradation; Digital modulation; Frequency shift keying; Land mobile radio; Modems; Nonlinear distortion; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 1993., 43rd IEEE
Conference_Location :
Secaucus, NJ
Print_ISBN :
0-7803-1267-8
DOI :
10.1109/VETEC.1993.507006
