Computer Determination of Sidebands in Frequency Modulation with Complex Periodic Modulation Functions
G. N. Miller, J.L. Conley, G.M. Engel · IEEE Transactions on Aerospace and Electronic Systems · 1966
Manual methods are not practical for accurately determining the sideband properties of a frequency-modulated system involving complex modulation functions. A technique, utilizing an IBM 7094 Data Processing System, accomplishes the solution with accuracy to four decimal places for an unmodulated carrier amplitude of one. This technique was programmed in FORTRAN IV language.