BROADBAND POWER AMPLIFIER DISTORTION CANCELLATION WITH MODEL ESTIMATION IN THE RECEIVER

FERNANDO GREGORIO, STEFAN WERNER; JUAN COUSSEAU ; RISTO WICHMAN

Helsinki

Workshop; Signal Processing Advances in Wireless Communications, 2007. SPAWC 2007. IEEE 8th Workshop on; 2007

Helsinki University of Technology

This paper proposes a practical receiver cancellation technique for removing nonlinear power amplifier (PA) distortion in OFDM systems. By performing the estimation of the PA model parameters at the receiver, the implementation complexity of the transmitter can be reduced. Furthermore, a simple adaptation rule is provided to enable tracking of the PA model parameters. As a consequence, cancellation of nonlinear distortion can be achieved without assuming that the PA model is known a priori at the receiver. Simulation results show that good levels of distortion cancellation are possible for a system with a broadband PA with memory. a priori at the receiver. Simulation results show that good levels of distortion cancellation are possible for a system with a broadband PA with memory.