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

  • 제30권9A호
  • /
  • Pages.722-728
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  • 2005
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

디스퍼시브 리시안 다중경로 페이딩 채널에서 동기식 셀룰라 DS-CDMA, 네트워크의 역방향링크 성능

Reverse-Link Performance of Synchronous Cellular DS-CDMA Networks in Dispersive Rician Multipath Fading Channels

  • 황승훈 (동국대학교 공과대학 전자공학과) ;
  • 발행 : 2005.09.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 리시안 다중경로 페이딩 환경에서 동기식 DS-CDMA 셀룰라 네트워크의 역방향링크 성능을 고찰하고자 한다. 시스템 성능은 단일 셀과 다중 셀의 두 가지 네트워크 레이아웃에서 성취 가능한 평균 비트오류율과 사용자 수용용량으로 계산된다. 특히 다중 셀 환경에서는 다른 셀 간섭이 동기식 DS-CDMA 업링크의 성취 가능한 수용용량에 미치는 영향을 살펴본다. 연구 결과를 보면 기존의 비동기식 CDMA 시스템과 비교할 때, 동기식 업링크 전송은 상응하는 비동기식 전송 시나리오보다 BER=$10^{-3}$에서 $25\%$부터 $56\%$까지 성취 가능한 사용자 수용용량 측면의 이득을 보인다.

In this paper, the reverse-link performance of synchronous DS-CDMA cellular networks is investigated in Rician multipath fading environments. The system's performance is evaluated in terms of the achievable average bit error rate BER) and the user capacities of two different network layouts, namely those of a uniform grid of hexagonal multiple cells and a single isolated cell. In the multiple-cell scenario, the impact of the other cells' interference on the attainable capacity of the synchronous DS-CDMA uplink is investigated. Upon comparing both networks to a conventional asynchronous CDMA system, we demonstrate an achievable user capacity gain of $25\%$ to $56\%$ for synchronous uplink transmissions over that of the corresponding asynchronous transmission scenario at BER = $10^{-3}$.

키워드

참고문헌

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