PAPR Performance Comparison Between Suboptimal Iterative PTS and Conventional PTS Methods for N=128

For N=128 subcarriers, we conduct a PAPR performance comparison between the PTS method employing a suboptimal iterative algorithm and the conventional PTS approach. The simulation configuration uses QPSK modulation with V=4 signal partitions and P=4 phase factors. Code implementation involves dividing the input signal into V sub-blocks, applying phase rotation factors, and iteratively searching for optimal combinations while reducing the search space through intelligent pruning. Execution time measurements confirm that the suboptimal iterative algorithm dramatically reduces PTS computational complexity. The algorithm achieves this through constrained search techniques and early termination criteria, trading minimal performance degradation for substantial computational savings. Further optimization opportunities include adaptive phase factor selection and parallel processing implementation to enhance both algorithmic performance and efficiency.