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Effect of imperfect channel estimation in I/Q imbalanced OFDM system

Published: 28 June 2010 Publication History

Abstract

We investigate the effect of Least Squares channel estimation on an OFDM system with I/Q imbalance. A pilot structure removing the errors caused by I/Q imbalance from the channel estimate is considered. Based on these assumption, we evaluate the symbol error rate (SER) of M-QAM modulation in a Rayleigh fading channel in closed form.

References

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L. Anttila, M. Valkama, and M. Renfors "Efficient Mittigation of Frequency-Selective I/Q Imbalance in OFDM Receivers", Proc. IEEE Vehicular Technology Conference, VTC 2008--Fall, Sept. 2008.
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M. Windisch and G. Fettweis, "Standard-Independent I/Q Imbalance Compensation in OFDM Direct-Conversion Receivers", Proc. 9th Intl. OFDM Workshop (InOWo), Dresden, Germany, 15--16 Sept. 2004, 57--61.
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M. Valkama, M. Renfors, and V. Koivunen, " Advanced Methods for I/Q Imbalance Compensation in Communication Receivers", IEEE Trans. Signal Processing, vol. 49, no. 10, Oct. 2001, 2335--2344.
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Y. Ma, and J. Jin, "Effect of channel estimation errors on M-QAM with MRC and EGC in Nakagami fading channels", IEEE Trans. Vehicular Technology, vol. 56, no. 3, May. 2007, 1239--1250.
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  • (2012)SER/BER expression for M-QAM OFDM systems with imperfect channel estimation and I/Q imbalanceEURASIP Journal on Wireless Communications and Networking10.1186/1687-1499-2012-3032012:1Online publication date: 25-Sep-2012

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  1. Effect of imperfect channel estimation in I/Q imbalanced OFDM system

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    cover image ACM Other conferences
    IWCMC '10: Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
    June 2010
    1371 pages
    ISBN:9781450300629
    DOI:10.1145/1815396
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 28 June 2010

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    Author Tags

    1. I/Q imbalance
    2. OFDM
    3. Rayleigh fading channel
    4. imperfect channel estimation
    5. symbol error rate (SER)

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    • (2012)SER/BER expression for M-QAM OFDM systems with imperfect channel estimation and I/Q imbalanceEURASIP Journal on Wireless Communications and Networking10.1186/1687-1499-2012-3032012:1Online publication date: 25-Sep-2012

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