Publication
Title
Joint compensation of IQ imbalance and frequency offset in OFDM systems
Author
Abstract
Zero-IF receivers are gaining interest because of their potential to enable low-cost OFDM terminals. However, Zero-IF receivers introduce IQ imbalance which may have a huge impact on the performance. Rather than increasing design time or component cost to decrease the IQ imbalance, an alternative is to tolerate the IQ imbalance and compensate it digitally. Current solutions require extra analog hardware or converge too slowly for bursty communication. Moreover, the tremendous impact of a frequency offset on the IQ estimation/compensation problem is not considered. In this paper, we analyze the joint IQ imbalance-frequency offset estimation and propose a low-cost, highly effective, all-digital compensation scheme. For large IQ imbalance (epsilon = 10%, Deltaphi = 10degrees) and large frequency offsets, our solution results in an average implementation loss below 0.5 dB. It therefore enables the design of low-cost, low-complexity OFDM receivers.
Language
English
Source (journal)
Boston 2003 Radio & Wireless Rawcon conference, proceedings
Source (book)
IEEE Radio and Wireless Conference (RAWCON 2003), AUG 10-13, 2003, BOSTON, MA
Publication
2003
ISBN
0-7803-7829-6
Volume/pages
(2003), p. 39-42
ISI
000185329800010
UAntwerpen
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 19.11.2017
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