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讨论了ADSL传输中最有吸引力的一种调制技术——离散多频音调制（DMT），给出了其中的关键技术即各子信道比特数的分配算法，并给出了简化算法例子。
One of the most attractive modulation techniques in ADSL transmission, discrete multi-tone modulation (DMT), is discussed. The key technique is given, which is the allocation of bits in each sub-channel. A simplified algorithm is also given.