FQPSK techniques for satellite and mobile radio communications systems

Yazhuo Li; Jing Tang; Xiaofeng Tao

doi:10.1117/12.657305

4 January 2006 FQPSK techniques for satellite and mobile radio communications systems

Yazhuo Li, Jing Tang, Xiaofeng Tao

Proceedings Volume 5985, International Conference on Space Information Technology; 59851L (2006) https://doi.org/10.1117/12.657305
Event: International Conference on Space information Technology, 2005, Wuhan, China

Abstract

A continuous phase modulation (CPM) and constant envelope modulation (CEM) alternative of Feher-Patented quadrature phase-shift keying (FQPSK) modulation technique is presented. It is found to provide good spectral efficiencies, power efficiencies, and bit error rate (BER) performance. The modulation schemes of FQPSK are described. The spectral efficiencies, BER performance are also compared with FQPSK and other modulation techniques which are widely used in current mobile and cordless radio standards. The results show that FQPSK modulated signal exhibits much less spectrum spreading than QPSK, OQPSK, and MSK, and the error probability performance of the FQPSK is superior to those in narrow-band nonlinear channels. Based on that, the system capacity and power dissipation are also analyzed for communication systems. It is found that the encoder or receiver for the FQPSK signal to be fully compatible with original I/Q modulated one. FQPSK technique is suitable for nonlinear channels, such as satellite and mobile communications systems reducing the AM/AM and AM/PM adverse effects. At last it is also attempted to extend the application in 3G (CDMA) and 4G (OFDM) mobile communications systems.

Citation Download Citation

Yazhuo Li, Jing Tang, and Xiaofeng Tao "FQPSK techniques for satellite and mobile radio communications systems", Proc. SPIE 5985, International Conference on Space Information Technology, 59851L (4 January 2006); https://doi.org/10.1117/12.657305

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