公开(公告)号：US20130214861A1

公开(公告)日：2013-08-22

申请号：US13776163

申请日：2013-02-25

Applicant: Dali Systems Co. Ltd.

Inventor： Wan Jong KIM ,  Shawn Patrick Stapleton

IPC: H03F1/32

CPC classification number: H03F1/3258 ,  H03F1/3247 ,  H03F1/3294 ,  H03F2200/204 ,  H03F2200/336 ,  H03F2200/57 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04B1/0475 ,  H04L25/03038 ,  H04L25/03343 ,  H04L2025/03356 ,  H04L2025/03477

Abstract: A baseband-derived RF predistortion system using a lookup table having coefficients extracted at baseband and then applied at RF by means of a vector modulator. The architecture combines the narrowband advantage of envelope predistortion with the accuracy of baseband predistortion, and including compensation for memory effects. A polynomial-based alternative is also described.

Abstract translation: 基带衍生的RF预失真系统，其使用具有在基带处提取的系数然后通过矢量调制器在RF处施加的系数的查找表。 该架构将包络预失真的窄带优势与基带预失真的精度相结合，并包括对记忆效应的补偿。 还描述了基于多项式的替代方案。