A stopping criteria for turbo decoding based on the LLR histogram

The present paper proposes an early stopping method for iterative turbo decoding. Many criterions were proposed to date, motivated by a variety of reasons, such as increasing average decoding throughput or reducing average decoder power consumption. The method is devised on observing the behavior of LLR (Log-Likelihood Ratio). Simulation results in comparing the proposed method with some normalization techniques show that our method achieves an acceptable BER (Bit Error Rate) performance and reduces considerably the average number of iterations.