Obtaining Diversity Gain Coming from IQ Imbalances in OFDM Receivers

In this paper, we analyze the effects of IQ (in-phase/quadrature-phase) imbalances at both transmitter and receiver of OFDM (orthogonal frequency division multiplexing) system and show that more diversity gain can be achieved even though there are unwanted IQ imbalances. When mixed sub-carriers with...

Full description

Saved in:
Bibliographic Details
Published in2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring pp. 2175 - 2179
Main Authors Younghwan Jin, Jihyun Kwon, Yuro Lee, Jaemin Ahn, Wongyu Choi, Dongchan Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2007
Subjects
Degradation
Demodulation
Diversity methods
Fading
Frequency diversity
OFDM
Radio frequency
Radio transmitters
Transceivers
Wireless communication
Online AccessGet full text
ISBN9781424402663
1424402662
ISSN1550-2252
DOI10.1109/VETECS.2007.449

Cover

More Information
Summary:In this paper, we analyze the effects of IQ (in-phase/quadrature-phase) imbalances at both transmitter and receiver of OFDM (orthogonal frequency division multiplexing) system and show that more diversity gain can be achieved even though there are unwanted IQ imbalances. When mixed sub-carriers within an OFDM symbol due to the IQ imbalances undergo frequency selective channels, additional diversity effects are expected during the demodulation process. Simulation results on the symbol error rate (SER) performance with ML (maximum likelihood) and OSIC (ordered successive interference cancellation) receiver show that significant performance gain can be achieved with the diversity gain caused by the IQ imbalances combined with the frequency selective channels.
ISBN:9781424402663
1424402662
ISSN:1550-2252
DOI:10.1109/VETECS.2007.449