SCALE-X: A Systematic Complexity-Aware Low-Precision Approach for Digital Predistortion
SCALE-X introduces a systematic method for digital predistortion (DPD) that balances accuracy and hardware complexity for power amplifiers. It uses anti-diagonal coefficient pruning to reduce model size, combined with quantization-aware fixed-point modeling. The result is a highly efficient DPD technique suitable for resource-constrained FPGAs, achieving near floating-point performance with minimal precision loss.