Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design and implementation of a speech coder for CDMA cellular system

CDMA 이동통신 시스템용 음성부호화기 설계 및 구현

  • 장석진 (한국전자통신연구소 이동통신계통연구단) ;
  • 윤병식 (한국전자통신연구소 이동통신계통연구단) ;
  • 김재원 (한국전자통신연구소 이동통신계통연구단) ;
  • 이원명 (한국전자통신연구소 이동통신계통연구단) ;
  • 윤병우 (경성대학교 전기공학과) ;
  • 이인성 (충북대학교 전파공학과) ;
  • 최송인 (한국전자통신연구소 이동통신계통연구부) ;
  • 임명섭 (전북대학교 컴퓨터정보통신공학부) ;
  • 한기철 (한국전자통신연구소 이동통신계통연구부)
  • Published : 1996.10.01
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Abstract

We developed a speech coder that can transfer data as well as speech for CDMA digital cellular system. We describe the design method of the speech coder that uses QCELP algorithm for speech coding. The speech coder is implemented on a single fixed-point DSP chip (TMS320C50). the coder has the complexity such as 4K words in RAM, 10K words in ROM, and 33 MIPS in execution time. The developed speech coder is fully tested and successfully working on the CDMA base station system.

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