8-phase psk modulator

Details 8-phase psk modulator 8-phase psk modulator

H - Electricity

03

K

332/32

H03K 7/00 (2006.01) H04L 27/20 (2006.01)

Patent

CA 1105099

D- 21,283 8 PHASE PSK MODULATOR by Stevan D. Bradley ABSTRACT OF DISCLOSURE This 8-phase modulator comprises logic circuitry for converting tribits XYZ of input data into binary control signals D1, D2, D3 and D4 according to a prescribed plan, a pair of 4-phase signal generators responsive to associated pairs of control signals, and a signal source producing a pair of equal amplitude carrier signals of the same frequency and of phases which differ by 45° for driving associated ones of the 4-phase generators 45° out-of-phase. Equal amplitude vector signals from the two 4-phase generators are combined to produce a resultant vector signal which individually generates the phasors of an 8-phase signal set.

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