A Method to Improve the Iterative Detection Convergence of SCCPM
Han Zhi-xue①; Bi Wen-bin②; Zhang Xing-zhou①
①College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China; ②China Ship Research and Development Academy, Beijing 100085, China
Abstract：Convergence of Serially Concatenated Continuous Phase Modulation (SCCPM) is studied. Based on the theory of dynamic system, phenomena of positive feedback during iterative detection are analyzed, and improved methods are proposed from the views of decrease and detection of positive feedback. An iterative method based on weighed extrinsic information exchange is proposed, which can improve the convergence of SCCPM effectively. A dynamic iterative method based on the number of change of hard decision is designed; which can detect the positive feedback as well as reduce the average number of iteration. Simulation results show the proposed methods can decrease positive feedback and improve the performance of SCCPM effectively.
韩志学; 毕文斌; 张兴周. 一种提高SCCPM系统迭代检测收敛性的方法[J]. 电子与信息学报, 2007, 29(2): 274-277 .
Han Zhi-xue; Bi Wen-bin; Zhang Xing-zhou. A Method to Improve the Iterative Detection Convergence of SCCPM. , 2007, 29(2): 274-277 .
2007, Vol. 29 
