关键字 OFDM 正交频分复用频域均衡符号间干扰 ISI 子载波间干扰 ICI 循环前缀 CP II Abstract RESEARCH OF EQUALIZATION TECHNIQUE IN OFDM SYSTEM
ABSTRACT
Broadband wireless munication is the leading technique in munication, and it will be widely applied in the prehensive services, such as audio, video and multimedia. The proposal of OFDM, which transfers datum on broadband, es a solution to solve the real-time interactive video system in physical layer. The feature of OFDM is that the spectrum of each signal is overlapped, which simplifies the generation of signals, uses wireless frequency spectrum efficiently, and improves the bandwidth.
However, in wireless channels, time-delay and fading of multipath result in inter-channel interference and inter-symbol interference, destroying system performance. So, the requirement of e