Title :
An efficient constant envelope π/4 QPSK modulation scheme
Author :
Lee, Tong-Fu ; Wang, Shih-Ho ; Liu, Chia-Liang
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
Abstract :
A new algorithm based on the cubic spline interpolation for the baseband waveform shaping for constant envelope π/4 QPSK modulation is proposed. This technique produces spectral and power efficient modulation, which can be non-linearly amplified. It may use coherent or non-coherent differential demodulation with robust performance of the bit error rate
Keywords :
error statistics; interpolation; quadrature phase shift keying; splines (mathematics); π/4 QPSK modulation scheme; BER; baseband waveform shaping; bit error rate; coherent differential demodulation; constant envelope modulation scheme; cubic spline interpolation; noncoherent differential demodulation; power efficient modulation; spectral efficient modulation; AWGN; Additive white noise; Attenuation; Baseband; Bit error rate; Bit rate; Interpolation; Phase modulation; Quadrature phase shift keying; Spline;
Conference_Titel :
Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on
Conference_Location :
Sacramento, CA
Print_ISBN :
0-7803-3694-1
DOI :
10.1109/MWSCAS.1997.666216
