Low-Complexity and High Performance SISO Decoding for Block Product Turbo Code (105,44)

Benjamin´s low complexiry sof input soft output (SISO) decoding algorithm is simple in the configuration and but shows less significant bit error rate (BER) performance in an additive white Gaussian noise (AWGN). To solve this problem, we propose a new algorithm which is based on the syndrome check with an alpha value into the decoder to enhance BER performance. We also confirm the performance of the proposed method using the block product turbo code (105,44).