| 摘要 |
<p>PURPOSE:To provide a device capable of processing data of multistream independently by effectively using capacity in a device which performs the processing of fast Fourier transform with hardware. CONSTITUTION:This device is constituted in such a way that plural fundamental circuits 16 provided with re-arranging parts 10, twist coefficient multiplication parts 12, and butterfly arithmetic parts 14, respectively are connected in series. and a circuit part 18 to which plural data strings multiplexed to an initial stage are inputted, a circuit part 20 which issues a data bypass instruction by designating circuits 16 equivalent to a number defined from the number of multiplex input data strings, and a circuit part 22 which performs bypass control on the data string inputted to a designated circuit 16 according to the instruction are provided, and the circuit part 22 includes a switch 24 to select either input or output, and a circuit 26 which selects the input compulsorily by driving all the switches 24 according to the instruction.</p> |
