This paper is concerned with a new time-domain adaptive predistortion scheme for compensating nonlinearity of high power amplifiers (HPA). A Hammerstein model is adopted to approximate expression of the input-output nonlinear distortion of HPA by using complex polynomial series followed by linear dynamical distortion. According to the Hammerstein model structure, the compensation input to HPA is calculated in a real-time manner so that the linearization from the predistorter input to the HPA output can be attained even if the nonlinear input-output relation of HPA is uncertain and changeable. The effectiveness of the proposed adaptive scheme is validated in numerical simulations.
|Number of pages||6|
|Journal||Proceedings of the American Control Conference|
|Publication status||Published - 2003 Nov 6|
|Event||2003 American Control Conference - Denver, CO, United States|
Duration: 2003 Jun 4 → 2003 Jun 6
ASJC Scopus subject areas
- Electrical and Electronic Engineering