There are numerous patented technologies which can be piggybacked individually or collectively onto a carrier frequency to elicit all kinds of effects. 在一个载波频率上有着众多的专利技术，它能个别偷偷的或集体的引起所有种类的影响。
FDM assigns a discrete carrier frequency to each data stream and then combines many modulated carrier frequencies for transmission. 它为每个数据流指定一个离散的载波频率，然后合并调制过的载波频率进行传输。
