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本方案适用于8、16和32点DFT的运算。对复数输入信号序列,字长16位,时钟速率10MHz时,每点运算时间约4μs,根据对运算速度及设备量的要求,可选用并行或串并行方案。采用时域加权时,无需多加设备量,也无需另占时间。控制电路十分简便,输入字长越短、运算速度越快。
This scheme is suitable for 8, 16 and 32 DFT operation. The complex input signal sequence, the word length 16, the clock rate of 10MHz, each point of operation time of about 4μs, according to the computing speed and equipment requirements, the choice of parallel or serial-parallel program. When using time-domain weighting, there is no need to add more equipment and no additional time is required. Control circuit is very simple, the shorter the input word length, the faster the operation.