Circuit structure using number theoretic transform for calculating cyclic convolution
A technology of circular convolution and circuit structure, which is applied to calculations using non-numerical representations, calculations using residual algorithms, and complex mathematical operations. The effect of saving memory space and small chip area
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[0058] The overall flow chart of using NTT to calculate circular convolution is as follows figure 2 shown.
[0059] For the Fermat number theory transformation circuit module, there is an 8bits data input port and a 32bits data output port. At the input port, the input data of 8 bits is buffered by the input data buffer RAM first, and then sent to the butterfly operation unit to participate in the operation under the control of the clock signal; what the present invention realizes is N (N=2 k , k=1,2,3...) point circular convolution calculation, so the width of the counter is N bits, in 0-2 N The main controller controls the address generation module according to the value of the counter, and generates the value and symbol of the shift number of the butterfly operation unit; the address generation module outputs the address of the read and write operation RAM, and judges whether it is the last bit to write address, and output the judgment result to the output data ca...
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