| 摘要 |
PURPOSE:To reduce the processing time by adding/subtracting a real part and an imaginary part of each vector before multiplication so as to conduct a complex number of operation through three times of multiplication. CONSTITUTION:A real part alpha and an imaginary part of a multiplicand (a) are inputted to terminals 1, 2 a real part gamma and an imaginary part delta of a multiplier (b) are inputted to terminals 3, 4 and after (alpha-beta) and (gamma+delta) are calculated respectively at adding/subtracting devices 5, 6, the operation of m1=(alpha-beta)X (gamma+delta) is executed at a multiplier 7. As to the output of the imaginary part of the complex number operation, the operation of m2=alphaXdelta amd m3=betaXgamma is conducted by multiliers 8, 9, the results are added by an adder 12 and outputted to a terminal 14. As to the real part, the result of multiplication m2, m3 utilized for the output of the imaginary output and the output m1 of the multiplier 7 are used and the operation of m1-m2+m3 is conducted by an adding/subtracting devices 10, 11. The result is (alpha-beta)X(gamma+delta)-alphadelta+betagamma=alphagamma-betadelta and the result of operation of the real part being target is obtained. |
