Impacts of Non-Ideal Analog Interfacing Factors on OFDM Baseband Signals

Author

Lee, C. ; El-Tanany, M.S. ; Goubran, R.A.

Author_Institution

Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont.

Volume

1

fYear

2005

fDate

16-19 May 2005

Firstpage

762

Lastpage

767

Abstract

This paper focuses on selected unavoidable flaws and limitations of digital-analog interfacing that impact OFDM baseband signals. Investigations through a hardware setup are used to collect empirical data to observe the impact of gain error, I/Q amplitude imbalance, system resolution, and DC offset on OFDM demodulation. In addition, software simulations emulate the hardware results to estimate the error magnitude from each analog factor. Further more, simulations are used to investigate the impact of each analog factor. The factors considered include: DC offset, gain error, I/Q amplitude imbalance, and system resolution

Keywords

OFDM modulation; digital-analogue conversion; DC offset; I/Q amplitude imbalance; OFDM baseband signals; OFDM demodulation; digital-analog interface; gain error; non-ideal analog interfacing factors; software simulations; system resolution; Baseband; Digital modulation; Digital signal processing; Digital-analog conversion; Drives; Hardware; Instruments; OFDM modulation; Signal resolution; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE

Conference_Location

Ottawa, Ont.

Print_ISBN

0-7803-8879-8

Type

conf

DOI

10.1109/IMTC.2005.1604220

Filename

1604220