抄録
An Orthogonal Frequency Division Multiplexing (OFDM) is one of the multi-carrier moduration schemes. Its signal is made of a lot of synthesized data which is divided into orthogonally arranged carriers in frequency axis. As carriers are orthogonal to each other, it is possible to use frequency band efficiently. And OFDM is not much affected by multipath interferences because its symbol length can be made very long, and inter-symbol interference is eliminated by adding a guard-interval part to the OFDM symbol. In a Signal Frequency Network (SFN) environment, a multipath is usually exists and the characteristic of reception of OFDM signal is affected. In mobile reception of OFDM signal, it is very serious. In this paper, the characteristics in mobile reception of OFDM signal under SFN environment are theoretically analyzed.
