ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지
DOI QR코드

DOI QR Code

Joint Compensation of Transmitter and Receiver IQ Imbalance in OFDM Systems Based on Selective Coefficient Updating

  • Received : 2014.03.09
  • Accepted : 2014.10.02
  • Published : 2015.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a selective coefficient updating (SCU) approach at each branch of the per-tone equalization (PTEQ) structure has been applied for insufficient cyclic prefix (CP) length. Because of the high number of adaptive filters and their complex adaption process in the PTEQ structure, SCU has been proposed. Using this method leads to a reduction in the computational complexity, while the performance remains almost unchanged. Moreover, the use of set-membership filtering with variable step size is proposed for a sufficient CP case to increase convergence speed and decrease the average number of calculations. Simulation results show that despite the aforementioned algorithms having similar performance in comparison with conventional algorithms, they are able to reduce the number of calculations necessary. In addition, compensation of both the channel effect and the transmitter/receiver in-phase/quadrature-phase imbalances are achievable by these algorithms.

Keywords

References

  1. B. Razavi, "Design Considerations for Direct-Conversion Receivers," IEEE Trans. Circuits. Syst. II, Analog Dig. Signal Process., vol. 44, no. 6, June 1997, pp. 428-435. https://doi.org/10.1109/82.592569
  2. H. Lin, X. Zhu, and K. Yamashita, "Low-Complexity Pilot-Aided Compensation for Carrier Frequency Offset and I/Q Imbalance," IEEE Trans. Commun., vol. 58, no. 2, Feb. 2010, pp. 448-452. https://doi.org/10.1109/TCOMM.2010.02.070505
  3. D. Tandur and M. Moonen, "Joint Adaptive Compensation of Transmitter and Receiver IQ Imbalance under Carrier Frequency Offset in OFDM-Based Systems," IEEE Trans. Signal Process., vol. 55, no. 11, Nov. 2007, pp. 5246-5252. https://doi.org/10.1109/TSP.2007.898788
  4. A. Tarighat, R. Bagheri, and A.H. Sayed, "Compensation Schemes and Performance Analysis of IQ Imbalances in OFDM Receivers," IEEE Trans. Signal Process., vol. 53, no. 8, Aug. 2005, pp. 3257-3268. https://doi.org/10.1109/TSP.2005.851156
  5. Y.-H. Chung and S.-M. Phoong, "OFDM Channel Estimation in the Presence of Transmitter and Receiver I/Q Imbalance," Int. Conf. European Signal Process., Lausanne, Switzerland, Aug. 25-29, 2008.
  6. A. Tarighat and A.H. Sayed, "OFDM Systems with both Transmitter and Receiver IQ Imbalance," IEEE Workshop Signal Process. Adv. Wireless Commun., New York, NY, USA, June 5-8, 2005, pp. 735-739.
  7. L. Anttila, M. Valkama, and M. Renfors, "Circularity-Based I/Q Imbalance Compensation in Wideband Direct-Conversion Receivers," IEEE Trans. Veh. Technol., vol. 57, no. 4, July 2008, pp. 2099-2113. https://doi.org/10.1109/TVT.2007.909269
  8. L. Yanet al., "Improved Joint Compensation Scheme of Transmitter and Receiver IQ Imbalances in OFDM Systems," Proc. IEEE Int. Conf. Wireless Commun. Signal Process., Nanjing, China, Nov. 9-11, 2009, pp. 1-4.
  9. Z. Zhu, X. Huang, and H. Leung, "Blind Compensation of Frequency-Dependent I/Q Imbalance in Direct Conversion OFDM Receivers," IEEE Commun. Lett., vol. 17, no. 2, Feb. 2013, pp. 297-300. https://doi.org/10.1109/LCOMM.2013.010313.122072
  10. L. Yan et al., "High-Performance Compensation Scheme for Frequency-Dependent IQ Imbalance in OFDM Transmitter and Receiver," J. Syst. Eng. Electron., vol. 24, no. 2, Apr. 2013, pp. 204-208. https://doi.org/10.1109/JSEE.2013.00026
  11. D. Tandur and M. Moonen, "Adaptive Compensation of Frequency Selective IQ Imbalance and Carrier Frequency Offset for OFDM Based Receivers," Proc. IEEE SPAWC Workshop, Helsinki, Finland, June 17-20, 2007, pp. 1-5.
  12. D. Tandur and M. Moonen, "Compensation of RF Impairments in MIMO OFDM Systems," Proc. IEEE Int. Conf. Acoust., Speech Signal Process., Las Vegas, NV, USA, Mar. 31-Apr. 4, 2008, pp. 3097-3100.
  13. F.D. Neeser and J.L. Massey, "Proper Complex Random Processes with Applications to Information Theory," IEEE Trans. Inf. Theory, vol. 39, no. 4, July 1993, pp. 1293-1302. https://doi.org/10.1109/18.243446
  14. D. Tandur, "Digital Compensation of Front-End Non-idealities in Broadband Communication System," Ph.D. dissertation, Dept. Elect. Eng., Katholieke Univ., Leuven, Belgium, 2010.
  15. K.V. Acker et al., "Per-Tone Equalization for DMT Based Systems," IEEE Trans. Commun., vol. 49, no. 1, June 2001, pp. 109-119. https://doi.org/10.1109/26.898255
  16. M.Z.A. Bhotto and A. Antoniou, "A Set-Membership Affine Projection Algorithm with Adaptive Error Bound," IEEE Conf. Electr. Comput. Eng., St. John's, Canada, May 3-6, 2009, pp. 894-897.
  17. K. Dogancay and O. Tanrikulu, "Adaptive Filtering Algorithms with Selective Partial Updates," IEEE Trans. Circuits Syst. II, Analog Digit. Signal. Process., vol. 48, no. 8, Aug. 2001, pp. 762-769. https://doi.org/10.1109/82.959866
  18. G.C. Goodwin and K.S. Sin, "Adaptive Filtering, Prediction, and Control," Englewood Cliffs, NJ, USA: Prentice-Hall, 1984, pp. 410-415.

Cited by

  1. Demonstration of Mobile Fronthaul Test Bed Based on RoF Technology Supporting Two Frequency Assignments and 2 × 2 MIMO Antennas vol.37, pp.6, 2015, https://doi.org/10.4218/etrij.15.0115.0146