Title :
An adaptive equalizer for frequency-selective mobile radio channels with noncoherent demodulation
Author :
Kohama, Teruhiko ; Kondoh, Hiroshi ; Akaiwa, Yoshihiko
Author_Institution :
Dept. of Comput. Sci. & Electron., Kyushu Inst. of Technol., Iizuka, Japan
Abstract :
A nonlinear equalizer is applied to a frequency-selective fading mobile radio channel including a hard-limiter and noncoherent demodulation. π/4 shift QPSK (quadratic phase shift keying) with delay detection is assumed. A two-ray model is used for the multipath environment. The equalizer is simply implemented with RAM and adders. Computer simulation results show significant improvement in bit error rate performance
Keywords :
digital radio systems; equalisers; fading; mobile radio systems; phase shift keying; π/4 shift QPSK; RAM; adders; bit error rate; delay detection; frequency-selective fading; hard-limiter; mobile radio channels; multipath environment; noncoherent demodulation; nonlinear adaptive equaliser; quadratic phase shift keying; two-ray model; Adaptive equalizers; Delay; Demodulation; Fading; Frequency shift keying; Land mobile radio; Phase detection; Phase frequency detector; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-87942-582-2
DOI :
10.1109/VETEC.1991.140599
