Analysis of DRM system performance based on OFDM
Di Chen · Journal of Shandong University · 2006
Based on DRM channel,the relation between the total number of sub-carrier(N) and the other two key parameter of OFDM system: inter-channel interfere(ICI) and the channel bit-rate(R) is investigated.The analysis shows that the appropriate Ncan not only satisfy the requirement ofR,but also have high resistance to the ICI.Then simulation analyzes the relation be-tween theR(S/N)ratio of the DRM system and channel delay(τ) as well as the gain of multi-path()ρ,proving that appropriate guard interval has great immunity to the ISI.