Paper Info
Title
Time domain IQ imbalance compensation for wideband wireless systems
Abstract
A time domain IQ compensation approach is proposed for wideband application where the IQ imbalance is frequency dependent. The proposed approach relies on known signal such as preamble in orthogonal frequency-division multiplexing (OFDM) signal data frame and radar echoes. Signal correlation property is used for noise elimination and signal frequency spectrum is divided into several sub-bands to deal with frequency-dependent IQ imbalance in wideband scenarios. In order to solve the number of computation increase problem caused by frequency spectrum sub-bands division, complementary code sequences are applied for calculation simplification by exploiting the uncorrelated properties between complementary code matrixes. By comparison with traditional time domain compensation method, the proposed approach exhibits better performance in low signal-to-noise ratio (SNR) and wideband scenarios.
Year
DOI
Venue
2010
10.1109/LCOMM.2010.06.091883
IEEE Communications Letters
Keywords
Field
DocType
signal to noise ratio,radar,broadband networks,ofdm,degradation,ofdm modulation,frequency spectrum,frequency division multiplexing,frequency domain analysis,passband,time domain
Time domain,Frequency domain,Wideband,Signal processing,Telecommunications,Frequency band,Computer science,Frequency-division multiplexing,Signal-to-noise ratio,Algorithm,Real-time computing,Orthogonal frequency-division multiplexing
Journal
Volume
Issue
ISSN
14
6
1089-7798
Citations 
PageRank 
References 
0
0.34
2
Authors
3
Name
Order
Citations
PageRank
Cun Gu100.34
Choi Look Law28912.49
Wen Wu351747.40