Patent ID: 8811533
Filing Date: 2014-08-19
Classification: H04L

Abstract:
1. A communications transmitter, comprising: a baseband processor configured to generate amplitude, angle, in-phase and quadrature signals A, θ, I and Q; and a combination modulator configured to receive said amplitude, angle, in-phase and quadrature signals A, θ, I and Q, and configurable to modulate a carrier signal in the polar domain using said amplitude and/or angle signals A and θ and in the quadrature domain using said in-phase and/or quadrature signals I and Q, wherein said baseband processor is configured to generate time-varying in-phase and quadrature modulating signals I =I(t) and Q =Q(t) formatted according to a first modulation scheme while holding the amplitude and angle signals A and θ constant, and said combination modulator is configured to modulate a carrier signal by said time-varying in-phase and quadrature modulating signals I(t) and Q(t) in the quadrature domain.