The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Study of Complex RF Unit in WiBro Base Station for Wave 2 Standard

Wave 2 규격을 위한 와이브로 기지국용 일체형 복합 RF unit 연구

  • 최두헌 (중앙대 공대 전자전기공학부) ;
  • 문연태 (중앙대 공대 전자전기공학부) ;
  • 김도균 (중앙대 공대 전자전기공학부) ;
  • 최영완 (중앙대 공대 전자전기공학부)
  • Published : 2008.09.01
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Abstract

The WiBro was adopted to the 3G international standard. By the change of specification from Wave 1 to Wave 2, MIMO technology is applied in order to increase the speed of downlink. By MIMO the RF part of WiBro base station is increased to 2 Tx paths. Therefore, the size of RF part is bigger and material cost is increased. For reducing these demerits, the RF part which is consisted of PA, LNA, and TDD switch is designed to one complex RF unit. Also, the experimental results of the RF unit have been discussed. Since the complex RF unit is more compact than the RF part of Wave 1 base station, it can be used as the RF part of Wave 2 base station with 2T/2R MIMO.

Keywords

References

  1. 김영일, 안지환, 황승구, "WiBro 시스템 기술", 전자공학회 텔레콤, 2-21권, 1호, pp.58-71 2005.6
  2. 김영, 안지환, 황승구, "와이브로(WiBro) 이동성 기술", 전자공학회 텔레콤, 2-21권, 1호, pp.49-57 2005.6
  3. 오세현, 조웅식, "SK텔레콤의 휴대인터넷(WiBro) 서비 스 상용화 방향", 전자공학회 텔레콤, 2-21권, 1호, pp.14-23 2005.6
  4. "PF scheduling and performance in OFDMA/TDD systems", Technical Report, WNL, HYU, Sep. 2004
  5. TTA, "2.3GHz 휴대인터넷 표준 (물리계층)", 한국정보 통신기술협회, 2004.12
  6. Perter B, Kenington, High-Linearity RF Amplifier Design, Artech House Inc., pp. 37-39, 2000
  7. Steve C. Cripps, RF PowerAmplifier for Wireless Communications, Artech House, Inc., 1999
  8. J. Vuolevi and T. Rahkonen, Distortion in RF Power Amplifiers, Artech House Inc., NorwoodPower, MA, 2003
  9. Guillermo Gonzalez, Microwave Transistor amplifiers Analysis and Design, Prentice Hall, pp.352-374, 1997
  10. Data sheet of FLL177ME amplifier, " http://www.eudyna.com/e/products_e/wireless_e/koufet /FLL177ME.pdf', http://www.Eudyna.com
  11. 최두헌, 이봉균, 연종현, 김강산, 최영완, "TDD 방식의 WiBro 기지국용 RF PA 설계 및 제작에 관한 연구", 전자공학회 텔레콤, 2-21권, 1호, pp.33-39, 2005.6
  12. P. M. Cabral, N. N. Carvalho, and J. C. Pedro, "An Integrated View of Nonlinear Distortion Phenomena in Various Power Amplifier Technologies", 11th GaAs Symposium - Munich, pp. 69-72, 2003
  13. N. B. Carvalho, and J. C. Pedro, "Large-and Small-Signal IMD Behavior of Microwave Power Amplifiers", IEEE Transactions on microwave theory and techniques, Vol. 47, No. 12, 99. 2364-2374, Dec. 1999 https://doi.org/10.1109/22.808983
  14. J. C. Pedro and J. Perez, "Accurate Simulation of GaAs MESFET's Intermodulation distortion Using a New Drain-Source Current Model", IEEE Transactions on microwave theory and techniques, Vol. MTT-42, pp. 25-33, Jan. 1994