Patent ID: 8340209

Claim:
A method for providing digital power amplification, the method comprising: receiving an I component signal and a Q component signal, the I component signal and the Q component signal defining multilevel digital signals; mapping the I component signal to a plurality of sub-I components and mapping the Q component signal to a plurality of sub-Q components, each of the sub-I component signals and the sub-Q component signals defining a tri-level signal; for each of the sub-I component signal, identifying a corresponding sub-Q component signal; orthogonalizing each sub-Q component signal relative to its corresponding sub-I component signal; combining each of the sub-I component signals with its corresponding sub-Q component signal to form a plurality of I and Q subcomponent pairs; amplifying each I and Q subcomponent pairs at a power amplifier operated in a compressed mode to form a plurality of amplified I and Q subcomponent pairs; and combining the amplified I and Q subcomponent pairs to form an output signal.