Measuring Gain Imbalance and Quadrature Error in WiMAX Transmitters

Author

Angrisani, Leopoldo ; Napolitano, Aniello ; Vadursi, Michele

Author_Institution

Dipt. di Inf. e Sist., Univ. degli Studi di Napoli Federico II, Naples

fYear

2008

fDate

12-15 May 2008

Firstpage

1577

Lastpage

1581

Abstract

The paper presents a new method for measuring the most common I/Q impairments affecting WiMAX transmitters, that are gain imbalance and quadrature error. The method operates on the signal at the output of the transmitter, acquired through a general purpose I/Q receiver. It is designed to correctly take into account the peculiarities of systems compliant to the standard IEEE 802.16-2004, such as the potentially noxious effects of impairments on signal normalization. The results of experiments carried out on standard-compliant signals are also given.

Keywords

WiMax; gain measurement; radio transmitters; I-Q impairments; IEEE 802.16-2004 standard; WiMAX transmitters; gain imbalance; iterative approach; quadrature error; signal normalization; standard-compliant signals; Attenuation; Gain measurement; Guidelines; OFDM modulation; Q measurement; Signal design; Social implications of technology; Testing; Transmitters; WiMAX; Digital transmitter testing; Digital transmitter troubleshooting; I/Q impairments; Orthogonal Frequency Division Multiplexing; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE

Conference_Location

Victoria, BC

ISSN

1091-5281

Print_ISBN

978-1-4244-1540-3

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2008.4547294

Filename

4547294