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

  • 제33권3A호
  • /
  • Pages.277-285
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  • 2008
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  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

Improved Orthogonal Code Hopping Multiplexing Using Both Division and Hopping

  • 발행 : 2008.03.31
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초록

We previously proposed an Orthogonal Code Hopping Multiplexing (OCHM) scheme for statistical multiplexing on a synchronous downlink. OCHM enables a large number of users to share a limited number of code channels through statistical multiplexing. We here improve the performance of OCHM by prioritizing encoded symbols according to their importance using both the conventional code division and the previously proposed code hopping multiplexing schemes. Prioritization is useful for channel coding schemes with different levels of importance for encoded symbols such as turbo-codes. Scheme performance is evaluated by simulation in terms of the required Eb/N0 for a 1% block error rate.

키워드

참고문헌

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