Performance Comparison of UWB DS-CDMA/OFDM/MC-CDMA System in S-V Channel Environment

S-V채널 환경에서 UWB DS-CDMA/OFDM/MC-CDMA 시스템 성능 비교

  • 이형기 (인하대학교 정보통신공학부) ;
  • 곽경섭 (인하대학교 정보통신공학부)
  • Published : 2005.11.01


In this paper, we analyze the performance of UWB MC-CDMA system and compareit with DS-CDMA and OFDM systems, which have been drafting in standardization even now. Too many Rake Fingers are needed in the DS-CDMA system to separate multi-path signals, which results in highsystem complexity. OFDM radio power fails to qualify for FCC certification unless frequency hopping. From this reason, MC-CDMA system considered is proposed in this paper. It has lower complexity compared with DS-CDMA and shows good performance against frequency selective fading. In addition, for a wide-band communication, less radio power per spectrum is allowed in the MC-CDMA system than in an OFDM system. Simulation result show that the DS-CDMA system has better performance with single user, but MC-CDMA system shows best performance in case of multi user environment.



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