Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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On the Application of Cyclic Delay Diversity to Distributed SC-FDMA Systems

분산할당 SC-FDMA 시스템에서의 순환지연 다이버시티의 적용

  • Rim, Min-Joong (Department of Information and Communications Engineering, Dongguk University)
  • 임민중 (동국대학교 정보통신공학과)
  • Published : 2008.12.25
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Abstract

In distributed-allocation OFDMA systems, cyclic delay diversify can improve the system performance by increasing frequency diversity. However, applying cyclic delay diversify to distributed-allocation SC-FDMA systems can affect the performance in two contrary ways: positive effect due to increased frequency diversity and negative effect caused by increased frequency selective channels. This paper addresses these two contrary effects and discusses about when cyclic delay diversity is useful and when it is not very useful for distributed-allocation SC-FDMA systems.

분산할당 OFDMA 시스템에서 순환지연 다이버시티를 적용하면 주파수 다이버시티의 증가로 인해 성능의 증대를 가져온다. 그러나 분산할당 SC-FDMA 시스템에 순환지연 다이버시티를 적용하는 것은 주파수 다이버시티의 증가로 인한 성능증대 효과와 주파수 선택적 채널로 인한 성능감소 효과를 동시에 가져온다. 본 논문에서는 이 상반되는 두 가지 효과에 대해서 논하며 분산할당 SC-FDMA 시스템에서 순환지연 다이버시티를 적용하는 것이 언제 유리하고 언제 불리한지 논의한다.

Keywords

References

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