NDLI: Characterization and compensation of DC offset on adaptive MIMO direct conversion transceivers

Content Provider	IEEE Xplore Digital Library
Author	Keshavarzi, M. Mohammadi, A. Abdipour, A.
Copyright Year	2009
Description	Author affiliation: Microwave & Wireless Communications Research Lab., Electrical Engineering Department, Amirkabir University of Technology , Tehran 15914, Iran (Keshavarzi, M.; Mohammadi, A.; Abdipour, A.)
Abstract	The effect of DC offset on multi-input multi-output (MIMO) direct transceivers with adaptive modulation (AM) is discussed in this paper. A variable-rate variable-power (VRVP) AM system with perfect channel state information (P-CSI) at both the transmitter and receiver in a MIMO scenario is considered. The DC offset is modeled as a zero mean complex Gaussian distributed random variable. By this modeling of the DC offset, the analytical expression for degraded bit error rate has been derived. To derive this analytical expression, some approximation has been made. The good agreement between the analytical and simulation results shows that proper approximation has been made and confirms the accuracy of the analytical expressions. Moreover, an approach to compensate the DC offset in these systems is introduced. The compensation technique is applied and the improvement has been examined.
Starting Page	207
Ending Page	211
File Size	270936
Page Count	5
File Format	PDF
ISBN	9781424440665
DOI	10.1109/WIRELESSVITAE.2009.5172451
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-17
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Transceivers BER DC offset Wireless communication Degradation Analytical models Microwave technology Transmitters Direct conversion transceiver Receiving antennas Compensation MIMO Adaptive modulation Channel state information
Content Type	Text
Resource Type	Article

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