Complexity reduction scheme in encoding and decoding for polar codes

Polar coding has received a lot of consideration due to its nature of capacity achieving under various condition of coding. Low complexity is introduced by using successive cancelation decoding method. By using this large-error correction capacity is achieved for finite length of codes.in this work we propose a new approach for polar codes to achieve the better performance. Reduction of complexity is performed by reducing the number of XOR operations and the performance of the system is enhanced by using systematic polar codes. XOR operations are discarded by using path searching method, in this approach only desired path is considered others are discarded with the help of a posteriori probability. The proposed approach is implemented using MATLAB tool and the performance is achieved and compared in terms of bit error rate and frame error rate.