Performance evaluation of differential π/4-QPSK systems in a Rayleigh fading/delay spread/CCI/AWGN environment

Author

Guo, Yanpeng ; Feher, Kamilo

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Davis, CA, USA

fYear

1990

fDate

6-9 May 1990

Firstpage

420

Lastpage

424

Abstract

An experimental study and performance evaluation results are presented of differential π/4 quadrature phase-shift keying (QPSK) systems (π/4-DQPSK) in a Rayleigh fading and delay spread channel corrupted by additive white Gaussian noise (AWGN) and cochannel interference (CCI). The effect of time delay spread and the CCI on the bit error rate (BER) performance and the residual error floor of differential π/4-QPSK systems is evaluated. The spectral spreading of bandlimited π/4-QPSK systems due to nonlinear amplification is investigated. The beneficial effect of a hardlimiter in the receiver is investigated. The experimental results show that in a Rayleigh-faded channel, CCI and delay spread have significant impact on the BER performance and the residual error floor of differential π/4-QPSK systems

Keywords

delays; fading; interference (signal); mobile radio systems; phase shift keying; random noise; telecommunication channels; AWGN; BER performance; Rayleigh fading; cochannel interference; delay spread channel; differential π/4-QPSK systems; mobile radio systems; nonlinear amplification; receiver handlimiter; residual error floor; AWGN; Band pass filters; Bit error rate; Delay; Mobile communication; Modems; Prototypes; Quadrature phase shift keying; Radiofrequency interference; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1990 IEEE 40th

Conference_Location

Orlando, FL

ISSN

1090-3038

Type

conf

DOI

10.1109/VETEC.1990.110358

Filename

110358