Title :
Power and spectrally efficient modulation for PCS and satellite TV broadcasting
Author :
Mehdi, Hussein ; Feher, Kamilo
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
fDate :
2/1/1996 12:00:00 AM
Abstract :
A power and spectrally efficient modulation which increases the transmit output power and reduces the interference among adjacent channel users in PCS and satellite TV broadcasting applications is presented. This modulation named filtered quadrature phase shift keying or “FQPSK” can be nonlinearly amplified using class C amplifiers allowing a 7-10 dB increase in transmit output power compared to QPSK modulated systems. This gain in the output power leads to a wider transmission coverage in satellite applications, longer battery life and reduced radiation for PCS users
Keywords :
adjacent channel interference; direct broadcasting by satellite; personal communication networks; quadrature phase shift keying; television broadcasting; FQPSK; PCS; adjacent channel interference; battery life; class C amplifiers; filtered quadrature phase shift keying; interference reduction; nonlinear amplification; power efficient modulation; reduced radiation; satellite TV broadcasting; spectrally efficient modulation; transmission coverage; transmit output power; Digital modulation; Interference; Personal communication networks; Phase modulation; Power amplifiers; Power generation; Pulse modulation; Quadrature phase shift keying; Satellite broadcasting; TV broadcasting;
Journal_Title :
Consumer Electronics, IEEE Transactions on
