• Title/Summary/Keyword: GERAN Evolution

Search Result 2, Processing Time 0.018 seconds

3GPP GERAN Evolution System Employing High Order Modulation and Turbo Coding: Symbol Mapping Based on Priority (터보코딩 및 고차변조를 적용하는 3GPP GERAN 진화 시스템: 비트 신뢰도 기반의 심볼 매핑)

  • Oh, Hyeong-Joo;Choi, Byoung-Jo;Hwang, Seung-Hoon;Choi, Jong-Soo
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.33 no.6A
    • /
    • pp.607-613
    • /
    • 2008
  • In this paper, we investigate the performance of SMP-assisted 3GPP GERAN evolution system employing high order modulation and turbo coding. When applying the SMP which maps systematic bits into highly reliable bit positions, it is confirmed that there is the performance gain for the modulation and coding schemes of 16QAM(DAS-8) as well as 32QAM(DAS-11) by link level simulation.

3GPP GERAN Evolution System Employing High Order Modulation and Turbo Coding: TSC for Channel Estimation (터보코딩 및 고차변조를 적용하는 3GPP GERAN 진화 시스템: 채널 추정을 위한 TSC)

  • Lee, Jong-Hwan;Hwang, Eun-Sun;Choi, Byoung-Jo;Hwang, Seung-Hoon;Choi, Jong-Soo
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.33 no.6A
    • /
    • pp.599-606
    • /
    • 2008
  • In this paper, the channel estimation performance of proposed TSC (TSC-S) is investigated in terms of the BER and BLER performances when HSR is considered for GERAN evolution system. The performance is evaluated by the link level simulation and is compared with the other TSC proposal (TSC-E). Numerical results show that the performance employing the TSC-S is almost same to that using the TSC-E. In the case of cochannel interferences, the similar tendency is shown, when joint least square is adopted for channel estimation.