khaksar, Mohammad, Khaleghi Bizaki, H.. “Parity Check Matrix Estimation of k/n Convolutional Coding in Noisy Environment Based on Walsh-Hadamard Transform.” Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran, vol. 17, no. 3, 2019, pp. 219-225.