The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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The Capacity Analysis of SSB/BPSK-DS/CDMA with Sussessive Interference Canceller

연속 간섭 제거 기법을 적용한 SSB/BPSK-DS/CDMA 방식의 용량 분석

  • 임명섭 (전북대학교 전자정보공학부, 정보통신연구소)
  • Published : 2000.04.01
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Abstract

It is necessary to apply SSB modulation method with high bandwidth efficiency to the DS-CDMA mobile communication systems in order to accommodate the increasing number of voice users as well as the broad band and high data rate service in the future. Even though the bandwidth efficiency increases if SSB modulation is applied to BPSK-DS/CDMA, its performance gets degraded because of the increased multiple access interference. Therefore for eliminating the increased multiple access interference, the SSB/BPSK-DS/CDMA with successive interference canceller(SIC) is proposed and its performance and capacity are analyzed. With the limited system bandwidth, it is shown that the SSB/BPSK-DS/CDMA with SIC can accommodate more capacity than the conventional BPSK-DS/CDMA with SIC.

DS-CDMA 방식의 이동통신 시스댐에서 계속 증가하는 가입자의 용량 증대 및 향후 예상되는 광대역 고속 데이터 서비스를 수용하기 위해 대역 사용효율이 높은 SSB변조 방식을 적용할 펼요가 있다. 그러나, SSB 변조 방식을 BPSK - DS/CDMA방식에 적용하면 대역 사용효율은 증가하나 다중 사용자 간섭의 증가로 성능이 감소 한다. 따라서 증가된 다중 사용자 간섭을 제거하기위해 연속간섭제거 기법을 적용한 SSB/BPSK-DS/CDMA방 식을 제안하고, 성능분석 및 용량분석을 하였다. 주어진 시스템의 가용 대역폭에서 연속간섭제거 기법을 적용한 S SSB/BPSK -DS/CDMA기볍이 종래의 연속간섭제거 기법이 적용된 BPSK -DS/CDMA 보다 더 많은 가입자 수 용량을 제공할 수 있음을 분석하였다.

Keywords

References

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