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Content Provider | IEEE Xplore Digital Library |
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Author | Jingbo Gao Xu Zhu Hai Lin Nandi, A.K. |
Copyright Year | 2002 |
Abstract | We propose a novel semi-blind compensation scheme for both frequency-dependent and frequencyindependent I/Q imbalance based on independent component analysis (ICA) in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, where ICA is applied to compensate for I/Q imbalance and equalize the received signal jointly, without any spectral overhead. A reference signal is embedded in the transmitted signal with little power consumption and no spectral overhead introduced, to enable ambiguity elimination for the ICA output signal at the receiver. Moreover, channel interpolation is incorporated with layered space frequency equalization (LSFE) to enhance the system performance. Simulation results show that the proposed implicit compensation scheme can not only provide a better bit error rate (BER) performance and a higher bandwidth efficiency than the previous training based I/Q imbalance compensation method, but also outperform the ideal case with perfect channel state information (CSI) and no I/Q imbalance, due to additional frequency diversity. |
File Size | 382235 |
File Format | |
ISSN | 15361276 |
Volume Number | 9 |
Issue Number | 3 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2010-03-01 |
Publisher Place | U.S.A. |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Independent component analysis MIMO OFDM Bit error rate Energy consumption Interpolation System performance Bandwidth Channel state information Frequency diversity I/Q imbalance, independent component analysis (ICA), orthogonal frequency division multiplexing (OFDM), multiple-input multiple-output (MIMO). |
Content Type | Text |
Resource Type | Article |
Subject | Computer Science Applications Applied Mathematics Electrical and Electronic Engineering |
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