한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제17권3호
  • /
  • Pages.307-316
  • /
  • 2006
  • /
  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지

차세대 이동통신 시스템의 주파수 공유분석을 위한 개선된 MCL 방법

An Advanced MCL Method for a Sharing Analysis of Mobile Communication Systems beyond 3G

  • 정우기 (연세대학교 전기전자공학과) ;
  • 윤현구 (명지전문대학 컴퓨터전자과) ;
  • 조한신 (연세대학교 전기전자공학과) ;
  • 임재우 (정보통신부 전파연구소) ;
  • 육종관 (연세대학교 전기전자공학과) ;
  • 박한규 (연세대학교 전기전자공학과)
  • Chung Woo-Ghee (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Yoon Hyun-Goo (Department of Computer & Electronic Engineering, Myongji College) ;
  • Jo Han-Shin (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Lim Jae-Woo (Radio Research Lab., Ministry of Information and Communication) ;
  • Yook Jong-Gwan (Department of Electrical & Electronic Engineering, Yonsei University) ;
  • Park Han-Kyu (Department of Electrical & Electronic Engineering, Yonsei University)
  • 발행 : 2006.03.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 차세대 이동통신 시스템의 간섭을 분석하기 위해 개선된 MCL(Advanced Minimum Coupling Loss) 방법을 제안하고 기존의 MCL 방법과 비교하였다. 제안된 방법은 OFDM(Orthogonal Frequency Division Multiplex) 기반의 차세대 이동통신 시스템의 송신 전력밀도 스펙트럼을 이용하여 간섭전력을 해석적으로 구한다. 또한 개선된 MCL 방법을 이용하여 기존의 MCL에서는 정확히 계산하기가 불가능했던 FSU(Flexible Spectrum Usage)를 사용하는 차세대 이동통신 시스템과 차세대 이동통신 후보 주파수 대역에 존재하는 고정 마이크로파 시스템과의 공유 간섭을 분석하였다. 피간섭원의 수신 안테나에 도착한 간섭 전력을 계산한 결과, 기존 MCL보다 개선된 MCL로 계산한 결과가 보다 정확했으며 그 차이는 최대 4.5 dB였다. 따라서 본 논문에서 제시한 개선된 MCL 방법은 차세대 이동통신 시스템의 공유 분석에 유용하게 사용될 수 있다고 판단된다.

In this paper the analytical method, namely advanced minimum coupling loss(A-MCL), was proposed in order to analyze the coexistence of OFDM-based systems beyond 3G(B3G) with point-to point(PP) fixed service(FS) microwave systems. Our proposed method is based on a power spectral density(PSD) analysis. So it can be easily applicable to analyze the coexistence of OFDM-based systems B3G using flexible spectrum usage(FSU) with other systems, where the conventional MCL method cannot allocate transmit power partially to some subcarriers which overlap the band of a victim system. By applying the conventional MCL method and the A-MCL method, interfering power levels at the receiver of a interfered system are respectively calculated. A-MCL can calculate interference power more accurately than MCL by the maximum value of 4.5 dB. Therefore it can be concluded that our prosed method, namely A-MCL, is applicable to a sharing analysis of OFDM-based systems B3G.

키워드

참고문헌

  1. ITU-R Recommendation M. 1645, 'Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000', Jun. 2003
  2. ITU-R WP 8F/TEMP/209-E, 'Preliminary draft new report on radio aspects for the terrestrial component of IMT-2000 and systems beyond IMT-2000', Feb. 2005
  3. CEPT ERC Report 64, 'Frequency sharing between UMTS and existing fixed services', May 1999
  4. CEPT ERC Report 65, 'Adjacent band compatibility between UMTS and other services in the 2 GHz band', May 1999
  5. Nee, R., Prasad, R., OFDM for Wireless Multimedia Communications, Artech House, Boston, 2000
  6. ITU-R Recommendation SF.1006, 'Determination of the interference potential between earth stations of the fixed-satellite service and stations in the fixed service', Apr. 1993
  7. ITU-R Recommendation F.758-3, 'Considerations in the development of criteria for sharing between the terrestrial fixed service and other services', Feb. 2003
  8. ITU-R Recommendation P.452-12, 'Prediction procedure for the evaluation of microwave interference between stations on the surface of the earth at frequencies above about 0.7 GHz', Mar. 2005
  9. ITU-R Recommendation F.1245-1, 'Mathematical model of average and related radiation patterns for line-of-sight point-to-point radio relay systems antennas for use in certain coordination studies and interference assessment in the frequency range from 1 GHz to about 70 GHz', May 2000
  10. NOKIA, '1xEV-DV Evaluation Methodology(V-12.1)', 3GPP2/TSG-C.R1002, 2003
  11. M. R. Spiegel, Mathematical Handbook of Formulas and Tables, McGraw-Hill Inc., 1968