Systematic Polar Coded Cooperation Based on Puncturing

To design polar coded cooperation with high gain and flexible cooperation in a fading channel, systematic polar coded cooperation based on puncturing is investigated. It is shown that puncturing algorithms for non-systematic polar codes are also applicable to systematic polar codes. A quasi-uniform puncturing algorithm optimized by information bit refreezing is then applied to the systematic polar codes. Thus, systematic polar coded cooperation is proposed. Simulation results show that the proposed method significantly outperforms non-systematic polar coded cooperation. Taking the case in which the cooperation level is 50% as an example, 2.0~2.5 dB performance gain is achieved when the code length and code rate are 256 and 0.25, respectively.