A Novel Correlation Algorithm for Behavior Measurement of Satellite Power Amplifiers

Satellite communication is the cornerstone of modern national development. However, it is tough to measure the instantaneous behavior of power amplifiers (PA). The performance of PA on satellites changes with time. In order to measure PA behavior, designing high-performance linearizer algorithm is necessary. Nevertheless, the conventional correlation algorithm cannot well compensate the carrier offset due to PA nonlinearity and memory effects. This paper proposes a correlation algorithm to measure the instantaneous behavior of PAs. In this proposed algorithm, the influence of PA nonlinearity, memory effects on the PA sequence is modeled, compensated, and followed by the conventional compensation of the carrier offset.