대한산업공학회지 (Journal of Korean Institute of Industrial Engineers)

  • 제31권4호
  • /
  • Pages.349-357
  • /
  • 2005
  • /
  • 1225-0988(pISSN)
  • /
  • 2234-6457(eISSN)
대한산업공학회 (Korean Institute of Industrial Engineers)
권호 표지

순방향 WCDMA 채널에서 AMR 음성 코덱 모드 할당방식에 대한 성능 비교

Performance Comparison of AMR Codec Mode Allocations in Downlink WCDMA System

  • 정성환 (서울대학교 산업공학과) ;
  • 홍정완 (한성대학교 산업시스템공학과) ;
  • 이상천 (경상대학교 산업시스템공학부, 공학연구원) ;
  • 이창훈 (서울대학교 산업공학과)
  • Jeong, S.H. (Department of Industrial Engineering, Seoul National University) ;
  • Hong, J.W. (Department of Industrial and Systems Engineering, Hansung University) ;
  • Lee, S.C. (Division of Industrial and Systems Engineering, ERI, Gyeongsang National University) ;
  • Lie, C.H. (Department of Industrial Engineering, Seoul National University)
  • 발행 : 2005.12.30
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초록

The Adaptive Multi-Rate (AMR) speech codec is the mandatory for voice service in WCDMA systems. The AMR codec can be used efficiently to provide a balanced trade-off between the capacity and quality of voice by adjusting various service rates. In this paper, three ways of AMR mode allocation schemes on the downlink in WCDMA system are evaluated. To evaluate users satisfaction efficiently, new system performance measure and analytic models are proposed. The proposed analytic models can be applied to obtain optimal mode allocation ways while considering the system capacity and quality of voice. In numerical examples, the ways of finding optimal parameters are illustrated for the given traffic loads and the performances of three mode allocation schemes are compared.

키워드

참고문헌

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