Title :
A novel waveform for FQPSK modulation
Author :
Xie, Zhidong ; Zhang, Gengxin ; Zhu, Hongpeng
Author_Institution :
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Abstract :
Feher Quadrature Phase Shift Keying (FQPSK) is a quasi constant envelope modulation and it can be used to improve the power efficiency of high power amplifier (HPA). However, the envelope of FQPSK still has a least fluctuation of 0.18 dB and can be further improved. New waveforms for FQPSK modulation are presented in this paper. The performance of the FQPSK adopting new waveform is justified by analysis and simulation. The signal of new FQPSK has the strictly constant envelope. It improves the power efficiency of the amplifiers to the utmost, and outperforms over conventional FQPSK in both the bandwidth efficiency and the end to end performance of bit error probability. At last, the impact of frequency selective multi-path fading on the bit error rate performance of new FQPSK is derived and analyzed.
Keywords :
error statistics; fading channels; multipath channels; quadrature phase shift keying; FQPSK modulation; Feher quadrature phase shift keying; bandwidth efficiency; bit error probability; bit error rate performance; frequency selective multipath fading; high power amplifier; power efficiency; quasiconstant envelope modulation; Analytical models; Bandwidth; Error probability; Fluctuations; Frequency; High power amplifiers; Performance analysis; Phase modulation; Power amplifiers; Quadrature phase shift keying; FQPSK; constant; envelope; fading; frequency; modulation; multi-path; selective; waveform;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737306
