| 摘要 |
A binary digital microprocessor is arranged to perform rotations and additions on complex input variables A + jB by means of binary shifts and additions. The functions cos phi and sin phi are approximated by the functions C(m) and S(m) respectively, where C(m) = 1-2<-(2m+1)> and S(m) = 2<-m>, to achieve rotation by an angle 0 = tan <-><1> @@@@. The input variables may correspond to the exponential terms of a discrete Fourier transform, and the microprocessor may therefore be used for frequency analysis. |
