求翻译：OFDM即正交频分复用技术，实际上OFDM是多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。是什么意思？

ofdm orthogonal frequency division multiplexing, in fact, ofdm is a multi-carrier modulation. The main idea is: the channel is divided into several orthogonal subchannels, high-speed data signals into parallel low-speed sub-data stream, modulation to be transmitted in each subchannel. Quadrature sig

That OFDM orthogonal frequency division multiplexing technology, is in fact OFDM multi-carrier modulation. Its main idea is that the channel is divided into several orthogonal sub channel, high-speed data signal will be converted into parallel data streams at low speed, modulation in each sub channe

OFDM is%

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