DocumentCode
156121
Title
Gradient-based search technique using for M-QAM signals´ DC-offset estimation and compensation
Author
Pestryakov, A.V. ; Khasianova, E.R.
Author_Institution
Moscow Tech. Univ. of Commun. & Inf., Moscow, Russia
fYear
2014
fDate
7-13 Sept. 2014
Firstpage
234
Lastpage
235
Abstract
The possibility of using a gradient search technique to compensate the DC offset at the output of the quadrature converter is investigated in this research. The preliminary compensation of I/Q imbalance is assumed. The results of the work are a simulation model of a demodulator created in MATLAB SIMULINK in order to analyze the use of this method when receiving signals with M-QAM modulation, and frequency spectrum before and after calibration for QAM-4, -16, -32.
Keywords
quadrature amplitude modulation; search problems; signal processing; DC-offset estimation; I/Q imbalance; M-QAM modulation; frequency spectrum; gradient-based search technique; quadrature converter;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave & Telecommunication Technology (CriMiCo), 2014 24th International Crimean Conference
Conference_Location
Sevastopol
Print_ISBN
978-966-335-412-5
Type
conf
DOI
10.1109/CRMICO.2014.6959371
Filename
6959371
Link To Document