The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Analysis of Performance for SC-FDE Systems Using Proportional Adaptive Equalizer in $2GHz{\sim}10GHz$ Frequency Radio Channel Models

$2GHz{\sim}10GHz$ 무선 채널 환경에서 비례 적응형 등화기를 이용한 SC-FDE 시스템 구현과 성능분석

  • 양용석 (공주대 전기전자정보공학과 신호처리 연구실) ;
  • 이규대 (공주대 전기전자정보공학과 신호처리 연구실)
  • Published : 2007.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In the multipath fading channel, OFDM(Orthogonal Frequency Division Multiplexing)system possess the characteristics of ISI/ICIwith prefix, but a weak point of circuit complexity and PAPR problem. SC-FDE(Single Carrier with Frequency Domain Equalization) performance is similar to OFDM system, but equalizer is complex in frequency domain. In this paper, simple proportional equalizer offer for SC-FDE system, it useful method in the $2GHz{\sim}\;10GHz$ channel model such as indoor, outdoor, SUI. It prove using MATLAB simulation, speed faster then OFDM system, reduce terminal complexity in same test condition.

다중 경로 페이딩 환경에서 OFDM(Orthogonal frequency Division Multiplexing)방식은 보호 구간 및 주파수영역 등화로 심벌 및 채널 간 간섭을 방지하는 특성을 가지는 반면 전송신호의 PAPR(Peak-to-Average Power Ratio)크다는 것이다. SC-FDE(Single Carrier with Frequency Domain Equalization)방식은 OFDM과 유사한 성능을 가지면서 상대적으로 PAPR이 적은 반면 등화기가 복잡하다. 본 논문에서는 SC-FDE시스템을 위한 주파수영역 비례 적응형 등화기를 제안하고, $2GHz\;{\sim}\;10GHz$ 대역의 다양한 채널모델 환경 하에서 성능을 분석함으로 802.11 및 802.16 등에 효과적으로 적용할 수 있음을 제시하였다. 아울러 동일조건의 OFDM시스템과 성능을 비교하여 수렴속도가 빠르고 단말기의 복잡도를 줄일 수 있음을 시뮬레이션을 통해 증명하였다.

Keywords

References

  1. Ramjee, Prasad, 'OFDM for wireless communication systems', pp177, 2004
  2. ICA, '이동통신 백서', pp.187,April 2004
  3. D.Falconer, S.Ariyavisitakul, A.Seeyar, and B.Eidson, 'Frequency Domain Equalization for Single-Carrier Broadband Wireless Systems,' IEEE Communications Magazine, pp. 58-66, April 2002
  4. M.V.Clark, 'Adaptive Frequency Domain Equalization and Diversity Combining for Broadband Wireless Communications,' IEEE Journal on selected areas in Comm, Vol. 16, No.8, pp. 1385-1395, October 1998 https://doi.org/10.1109/49.730448
  5. J.Rinne and M.Renfors, 'Equalization of Orthogonal Frequency Division Multiplexing Signals,' IEEE GLOBECOM 94, Vol. 1, pp.415-419, 28. November-2. December 1994
  6. K.Matheus, G.Frank, and P.Schramm, 'Parameter optimization for decision directed frequency tracking for coherent OFDM,'GLOBECOM '00, Vol. 3, pp. 1402-1406, 27. November-1. December 2000
  7. Ji-Heon Kim, 'Frequency Domain DFE coupled with Common Phase Error Tracking Loop in OFDM Systems,'61st IEEE VTC Spring 2005, May. 2005
  8. ETSI, 'Broadband Radio Access Net Works (BRAN); HIPERLAN Type 2; Hhysical (PHY)Layer,' TS 101 475,Feb,2001
  9. Kim,S.C. 'Radio Propagation Measurements and Prediction Using Three Dimensional Ray Tracing in Urban Environments at 908MHz and 1.9GHz, IEEE Trans. Veh.. Technol., vol. 48, no3, pp.931-946, May.1999 https://doi.org/10.1109/25.765022
  10. COST259 Document, 3GPP TR 25.943 V4.0.0, June, 2001
  11. Correia, ed., 'Wireless flexible personalized communications COST259:European coo peration in mobile radio research', John Wiley &Sons,2001
  12. V. Erceg, K.V.S. Hari, M.S. Smith, D.S. Baum, K.P. Sheikh,C.appenden, J.M. Costa, C. Bushue, A. Sarajedini, R. Schwartz, D. Branlund, 'Channel Models for Fixed Wireless Applications', IEEE 802.16. 3c- 01/29r1 Feb. 23, 2001
  13. Yong-Seok Yang, Kyu-Tae Lee 'Analysis of 64QAM/OFDM system performance considering channel estimation based on the Urban, Rural and Hilly channel model' 한국인터넷방송통신.TV학회논문지 Vol. 5, No.2, PP87-95, 2005