Digital signal processing of SINAD measurement for cordless telephone

Author

Wong, Eddie M C ; Ong, J.T. ; Lau, S.F. ; Pang, C.M. ; McDermott, Jim

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

1992

Firstpage

476

Abstract

This paper describes the development of a RF range tester to measure the performance of cordless telephones. The proposed hardware consists of a Motorola DSP56001 digital signal processor (DSP), a HP11713A programmable attenuator switch driver, an artificial central office simulator and an artificial ear. Software development includes data acquisition of test signals, calculation of fundamental frequency and total harmonic distortion, and hence performing SINAD measurement. The fast Fourier transform (FFT) software is able to execute a complete 1024-point complex FFT on complex data in 4.72 ms. The SINAD measurement is used to determine the received signal quality of the cordless telephone. The hardware and software design for the basic model of the RF range tester has been satisfactorily tested

Keywords

computerised instrumentation; cordless telephone systems; digital signal processing chips; fast Fourier transforms; signal processing; testing; 4.72 ms; HP11713A programmable attenuator switch driver; Motorola DSP56001; RF range tester; SINAD measurement; artificial central office simulator; artificial ear; cordless telephone; data acquisition; design; digital signal processor; fast Fourier transform; fundamental frequency; hardware; performance; received signal quality; software; testing; total harmonic distortion; Attenuators; Central office; Digital signal processing; Digital signal processors; Distortion measurement; Hardware; Radio frequency; Software testing; Switches; Telephony;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 1992., Proceedings of the IEEE International Symposium on

Conference_Location

Xian

Print_ISBN

0-7803-0042-4

Type

conf

DOI

10.1109/ISIE.1992.279645

Filename

279645