Khanna, Puneet, and Neelu Trivedi. “PAPR Reduction in OFDM System by Using Discrete Cosine Transform and µ-Law Companding”. International Journal of Computer Sciences and Engineering, vol. 3, no. 6, Nov. 2025, pp. 22-25, https://ijcse.isroset.org/index.php/j/article/view/563.