Turbo Coding Performance Improvement with Unbalanced Periodic Bit Insertion

Known-bits insertion within the data in the Turbo Code (TC) has been used mainly for rate compatibility and performance improvement. Regarding this improvement, the price is the data rate reduction, which can be compromised in applications whose performance is prioritized. This paper studies the Bit Insertion (BI) by exploring different levels of know-bits-insertion. To reduce the BI complexity, we propose considering only one branch within the Turbo code for the BI. Simulation results show the improvement in bit error rate (BER) is governed by the insertion rates compared to the conventional turbo code.