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

fYear

1991

fDate

19-22 May 1991

Firstpage

770

Lastpage

775

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE

Conference_Location

St. Louis, MO

ISSN

1090-3038

Print_ISBN

0-87942-582-2

Type

conf

DOI

10.1109/VETEC.1991.140599

Filename

140599