When a phase-modulated carrier of the form sin (wt+ϕ) is multiplied by cos (wt), the recovered phase modulation is sin (ϕ), which is a distorted version of . For small ϕ, the error is small, but is appreciable as A approaches unity or more. When ϕ is complicated (several subcarriers for example), the intermodulation can seriously degrade the system. This paper discusses distortion reduction by means of predistortion and postdistortion.
Distortion Reduction in Phase Modulation
IEEE Transactions on Aerospace and Electronic Systems ; AES-7 , 2 ; 321-323
1971-03-01
1307461 byte
Article (Journal)
Electronic Resource
English
A Method for the Reduction of Waveform Distortion
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