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Non-frequency-selective I/Q Imbalance in Zero-IF Transceivers for Wide-Band mmW Links

Authors:
Ainhoa Rezola
Juan Francisco Sevillano
Roc Berenguer
Martin Leyh
Moises Lorenzo
Aharon Vargas
Igone Vélez

Keywords: Mobile backhaul; millimeter-wave; transceivers; RF impairments.

Abstract:
Millimeter wave (mmW) links are an attractive solution for backhaul of mobile networks. In order to cope with the requirements of future networks, these mmW links should achieve Gigabit data rates. These data rates can be achieved using wide-band and high order modulations in E-Band. Zero-IF architectures are good candidates for integrated transceivers. However, the design of integrated transceivers at these frequencies is a challenging issue. An important source of degradation is I/Q imbalance, which can significantly reduce the performance of a communication system with zero-IF transceivers if it is not appropriately compensated. In this paper, the impact of the I/Q imbalance impairment on the transmitted and received signal is analyzed and suitable digital signal processing techniques are evaluated for I/Q imbalance compensation at the receiver for a 64-QAM system using 2GHz bandwidth.

Pages: 136 to 141

Copyright: Copyright (c) IARIA, 2014

Publication date: June 22, 2014

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-347-6

Location: Seville, Spain

Dates: from June 22, 2014 to June 26, 2014