Estimation of in-band distortion in digital communication system

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

2005

fDate

12-17 June 2005

Abstract

A generalized approach for estimating in-band distortion spectrum when a wireless communication signal is processed by a nonlinear amplifier is presented. The output spectrum is represented as the sum of uncorrelated components using Gram-Schmidt orthogonalization without any restriction on the statistical properties of the input signals. The analysis allows the accurate estimation of in-band distortion and hence the effective SNR, Rho and EVM of wireless communication systems. The approach is verified by measurements of in-band distortion using feed-forward cancellation.

Keywords

digital communication; feedforward amplifiers; frequency estimation; nonlinear distortion; spectral analysis; Gram-Schmidt orthogonalization; digital communication system; feed-forward cancellation; in-band distortion estimation; nonlinear amplifier; wireless communication system; Digital communication; Distortion measurement; Nonlinear distortion; Phase modulation; Phase noise; Power system modeling; Radio transmitters; Signal to noise ratio; State estimation; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2005 IEEE MTT-S International

ISSN

01490-645X

Print_ISBN

0-7803-8845-3

Type

conf

DOI

10.1109/MWSYM.2005.1517127

Filename

1517127