Comparison of Polynomial-based Digital Predistortion and Lookup Table Digital Predistortion using MATLAB

This paper presents a comparative study of polynomial-based digital predistortion and lookup table digital predistortion implemented using MATLAB, analyzing their respective advantages and disadvantages while exploring their applicable scenarios. The research provides detailed explanations of digital predistortion concepts, fundamental principles, and practical applications, supported by concrete case studies. MATLAB implementations will demonstrate key aspects such as coefficient calculation algorithms for polynomial methods using least-squares fitting techniques, and memory depth considerations for lookup table approaches with interpolation methods. The study also investigates the development prospects of digital predistortion technology in signal processing applications, including potential future research directions focusing on adaptive algorithms and computational efficiency improvements. In summary, this paper serves as a valuable reference for researchers working on digital predistortion techniques, providing insights into practical implementation considerations and performance trade-offs between different methodological approaches.