Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Improvement in Image Rejection of Multi-Port Junction-based Direct Receivers

다중 접합 기반 수신기의 영상 제거비 평가 및 향상 방법

  • Park, Hyung Chul (Seoul National University of Science and Technology, Dept. of Electronic and IT Media Engineering)
  • 박형철 (서울과학기술대학교 전자IT미디어공학과)
  • Received : 2012.06.30
  • Published : 2012.09.25
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Abstract

This paper presents an iterative single-frequency continuous-wave signal-based I/Q regeneration method for improving image-rejection performance of multi-port junction-based direct receivers (MPDRs). This paper analyzes I/Q regeneration in MPDRs as I/Q mismatch compensation for direct conversion receivers. Based on the analysis, this paper evaluates the accuracy of I/Q regeneration in terms of the image-rejection ratio (IRR). The proposed method improves the IRR performance more than 20 dB compared to existing I/Q regeneration methods. Simulation results show that MPDRs using the proposed method can achieve an IRR of more than 70 dB, and that the bit error rate performances are almost the same as those of conventional coherent demodulators, even in fading channels.

본 논문에서는 다중 접합 기반 수신기 (MPDR)의 영상 제거 성능을 향상시키는 반복적인 단일주파수 CW 신호 기반 I/Q 신호 재생 알고리즘을 제안한다. 이 논문에서는 MPDR 수신기의 I/Q 신호 재생이 직접변환수신기의 I/Q 부정합 보상임을 보인다. 분석을 바탕으로 I/Q 재생의 정확도를 영상 제거비로써 평가한다. 제안한 방법은 기존의 I/Q 신호 재생 방법에 비해서 20dB 이상 영상 제거비를 향상시킨다. 모의실험 결과는 제안한 방법을 이용한 MPDR 수신기의 영상 제거비가 70dB 이상임을 보이고, 비트오율 성능은 페이딩 채널 환경에서 조차도 일반적인 동기 수신기의 성능과 거의 같음을 보인다.

Keywords

References

  1. IEEE P802.11n/D7.0, Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Amendment 5: Enhancements for Higher Throughput, Sep. 2008.
  2. IEEE 802.15 WPAN High Rate Alternative PHY Task Group 3a (TG3a). [Online]. Available: http://www.ieee802.org/15/pub/TG3a.html.
  3. IEEE 802.15 WPAN Low Rate Alternative PHY Task Group 4a (TG4a). [Online]. Available: http://www.ieee802.org/15/pub/TG4a.html.
  4. IEEE 802.15 WPAN High Rate Alternative PHY Task Group 3c (TG3c). [Online]. Available: http://www.ieee802.org/15/pub/TG3c.html.
  5. Ji Li, R. G. Bosisio, and Ke Wu, "A Six-Port Direct Digital Millimeter Wave Receiver," in Proc. 1994 IEEE MTT-S Int. Microwave Symp. Dig., San Diego, CA, USA, May 1994, pp. 1659-1662.
  6. G. F. Engen, "The Six-Port Reflectometer: An Alternative Network Analyzer," IEEE Trans. Microw. Theory Tech., pp. 1075-1080, Dec. 1977.
  7. G. F. Engen, "Calibrating the Six-Port Reflectometer by Means of Sliding Terminations," IEEE Trans. Microw. Theory Tech., pp. 951-957, Dec. 1978.
  8. X. Huang, D. Hindson, M. Léséleuc, and M. Caron, "I/Q-Channel Regeneration in 5-Port Junction based Direct Receivers," in Proc. 1999 IEEE MTT-S Int. Microwave Symp. Dig., Anaheim, CA, USA, Jun. 1999, pp. 169-173.
  9. X. Huang, M. Caron, and D. Hindson, "Adaptive I/Q-regeneration in 5-port junction based direct receivers," in Proc. APCC 1999, Beijing, China, Oct. 1999, pp. 717-720.
  10. H. C. Park, H. Lim, and J. Yu, "Unified DC Offset Cancellation and I/Q Regeneration with Carrier Phase Recovery in Five-Port Junction based Direct Receivers," J. of Institute of Electronics Engineers of Korea, Vol. 44-TC, No. 6, pp. 64-70, Jun. 2007.
  11. H. C. Park, "New Interpretation of Multi-Port Junction-based Direct Receivers for Operation in Existing RFIC based Systems," J. of Institute of Electronics Engineers of Korea, accepted and will be published on Vol. 49-SP, No. 5, Sep. 2012.
  12. T. Hentschel, "A Simple IQ-Regeneration Technique for Six-port Communication Receivers," in Proc. IEEE Int. Symp. on Control, Communications and Signal Processing, Hammamet, Tunisia, Mar. 2004, pp. 311-314.
  13. J. Glas, "Digital I/Q imbalance compensation in a low-IF receiver," in Proc. IEEE Global Telecom. Conf., Sydney, Australia, Nov. 1998, pp. 1461-1466.
  14. L. Yu and W. M. Snelgrove, "A novel adaptive mismatch cancellation system for quadrature IF radio receivers," IEEE Trans. Circuits Syst. II: Analog Digit. Signal Process., vol. 46, no. 6, pp. 789-801, Jun. 1999. https://doi.org/10.1109/82.769786
  15. C. Heng, M. Gupta, S. Lee, D. Kang, and B. Song, "A CMOS TV tuner/demodulator IC with digital image rejection," IEEE J. Solid-State Circuits, vol. 40, no. 12, pp. 2525-2535, Dec. 2005. https://doi.org/10.1109/JSSC.2005.857421
  16. I. Elahi, K. Muhammad, and P. Balsara, "I/Q mismatch compensation using adaptive decorrelation in a low-IF receiver in 90-nm CMOS process," IEEE J. Solid-State Circuits, vol. 41, no. 2, pp. 395-404, Feb. (2006). https://doi.org/10.1109/JSSC.2005.862353
  17. S. Lerstaveesin and B. Song, "A Complex Image Rejection Circuit with Sign Detection Only," IEEE J. Solid-State Circuits, vol. 41, no. 12, pp. 2693-2702, Dec. 2006. https://doi.org/10.1109/JSSC.2006.884183
  18. W. C. Jakes, Jr., Microwave Mobile Communications, New York: Wiley, 1974.
  19. X. Tang, M. Alouini, and A. J. Goldsmith, "Effect of Channel Estimation Error on M-QAM BER Performance in Rayleigh Fading," IEEE Trans. Commun., vol. 47, no. 12, pp. 1856-1864, Dec. 1999. https://doi.org/10.1109/26.809706