Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Performance Analysis of MU-MIMO employing differential Precoding

차등 선부호화 기법을 적용한 MU-MIMO 시스템의 성능분석

  • Gu, Qing (School of Information and Communication Engineering, Chungbuk National University) ;
  • Park, Noe-Yoon (School of Information and Communication Engineering, Chungbuk National University) ;
  • Li, Xun (School of Information and Communication Engineering, Chungbuk National University) ;
  • Kim, Young-Ju (School of Information and Communication Engineering, Chungbuk National University)
  • 곡청 (충북대학교 정보통신공학과) ;
  • 박노윤 (충북대학교 정보통신공학과) ;
  • 이신 (충북대학교 정보통신공학과) ;
  • 김영주 (충북대학교 정보통신공학과)
  • Received : 2011.09.05
  • Accepted : 2011.10.17
  • Published : 2011.10.25
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Abstract

In this paper, the sum-rate and BER performances of MU-MIMO system employing quantized differential feedback technique are analyzed over temporrally correlated channels. Several differential codebooks are assumed in the analysis such as quasi-diagonal codebook, spherical cap codebook, and differential equal gain codebook. The simulation results indicates that the system employing quantized differential feedback technique provides significant performance improvement. The performance improved 0.6bps/Hz at least in terms of sum-rate, and 4dB power gain is provided in terms of average BER.

본 논문에서는 제한된 피드백 정보를 사용하는 MU-MIMO 하향링크 시스템에 준-대각선 및 구관 행렬, 그리고 동 이득 전송 기법을 이용한 차등 선부호화 기법을 적용하여 sum-rate 및 bit error rate 성능을 분석한다. 시뮬레이션과 성능분석을 통해 기존의 LTE 코드북보다 sum-rate 성능은 최소 0.6bps/Hz, BER 성능은 최소 4dB 개선됨을 보인다.

Keywords

References

  1. J. Duplicy, B. Badic, R. Balraj, "MU-MIMO in LTE Systems," EURASIP Journal on Wireless Com- munications and Networking Vol. 2011, pp. 1-13, 2011.
  2. G. Caire and S. Shamai, "On the achievable throughput of a multi antenna Gaussian broadcast channel," IEEE Trans. Information Theory, Vol. 49, No. 7, pp. 1691-1706, July 2003. https://doi.org/10.1109/TIT.2003.813523
  3. N. Jindal and A. Goldsmith, "Dirty paper coding vs. TDMA for MIMO broadcast channels," IEEE Trans. Inf. Theory, Vol. 51, No. 5, pp. 1783-1794, May 2005. https://doi.org/10.1109/TIT.2005.846425
  4. Stefania Sesia, Issam Toufik and Matthew Baker, LTE-The UMTS Long Term Evolution: From Theory to Practice. Wiley, 2009.
  5. T. Abe, G. Bauch, "Differential codebook MIMO precoding technique," Global Telecommunications Conference 2007. IEEE, pp. 3963-3968, Nov. 2007.
  6. T. J. Kim, D. J. Love, B. Clerckx, "MIMO systems with limited rate differential feedback in slowly varying channels," Communications IEEE Transactions on, vol. 59, no. 4, pp. 1175-1189, Apr. 2011. https://doi.org/10.1109/TCOMM.2011.022811.090744
  7. Xun Li, N. Y. Park, and Y. J. Kim, "Differential precoding scheme of LTE Systems over temporally correlated channels" IEEE VTC Fall 2011, in press, 2011.
  8. N. Jindal, "MIMO broadcast channels with finite rate feedback," IEEE Trans. Information Theory, Vol. 52, No. 11, pp. 5045-5059, Nov. 2006.
  9. R. W. Heath, W. Tao, A. C. K. Soong, "Progressive refinement for high resolution limited feedback multiuser MIMO beamforming," Signals Systems and Computers 2008 42nd Asilomar Conference on, pp. 743-747, Oct. 2008.
  10. T. Yoo, N. Jindal, and A. Goldsmith, "Multi- Antenna Downlink Chanels with Limited Feedback and User Selection," IEEE journal sel. areas in commun., vol. 25, no. 7, pp. 1478-1491, Sept. 2007.
  11. J. G. Proakis, Digital Communications, 4th edition. McGraw Hill, 2000.
  12. Philips, "Comparison between MU-MIMO codebook-based channel reporting techniques for LTE downlink," 3GPP TSG RAN WG1, R1-062483, Oct. 2006.
  13. M. Trivellato, F. Boccardi and F. Tosato, "User Selection Schemes for MIMO Broadcast Channels with Limited Feedback," IEEE VTC Spring 2007, pp. 2089-2093, May. 2007.