【摘要】 根据信道译码器所提供的发送比特的先验信息,对数据联合算法(PDA)进行了改进,在仅有较小性能损失的前提下,进一步降低了PDA算法的计算复杂度.更多还原

【Abstract】 The iterative multiuser detector is made up by a soft-input soft-output(SISO) multiuser detector concatenated with a SISO channel decoder.The computational complexity of the optimal SISO algorithm grows exponentially with the number of users,so it can not be well applied to the system with large number of active users.The probabilistic data association(PDA) algorithm is a novel SISO multiuser detection algorithm,which has a good performance approximating to that of the optimal algorithm and low computational complexity of order O(K~3).In this paper,we make an improvement for the PDA algorithm to further reduce the computational complexity of the PDA algorithm with just a small loss in performance.更多还原