Accurate estimation of digital communication system metrics - SNR, EVM and ρ in a nonlinear amplifier environment

Author

Gharaibeh, Khaled M. ; Gard, Kevin G. ; Steer, Michael B.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

fYear

2004

fDate

2-3 Dec. 2004

Firstpage

41

Lastpage

44

Abstract

A nonlinear spectral analysis technique that enables digital communication system metrics; SNR, EVM and the waveform quality factor (ρ) to be related to in-band distortion spectrum is presented. System metrics are estimated from the measured output power and in-band distortion power. The estimated metrics are verified by direct measurements of each metric using a vector signal analyzer (VSA) performed on a forward-link IS-95 signal. Estimated system metrics are in excellent agreement with measured values.

Keywords

digital communication; distortion measurement; mobile radio; nonlinear estimation; radiofrequency amplifiers; spectral analysis; EVM; SNR; VSA; digital communication system metrics; estimated system metrics; forward-link IS-95 signal; in-band distortion power; in-band distortion spectrum; measured output power; nonlinear amplifier; nonlinear spectral analysis; vector signal analyzer; waveform quality factor; Digital communication; Distortion measurement; Nonlinear distortion; Performance analysis; Power amplifiers; Power generation; Power measurement; Q factor; Signal analysis; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Measurements Conference, Fall 2004. 64th ARFTG

Print_ISBN

0-7803-8952-2

Type

conf

DOI

10.1109/ARFTGF.2004.1427570

Filename

1427570