利用正交频分复用信号包含循环前缀的特点,提出一种针对该信号的多用户场景下的协作检测模型,用最大化偏移系数的方法对系统的权值向量进行优化,得到优化权值向量的闭合表达式.理论分析和仿真结果均表明,所提算法检测性能优于经典协作检测算法.
Utilizing the cyclic prefix characteristic of orthogonal frequency division multiplexing( OFDM)signal,this paper optimizes the system weight vector with the improved maximum deflection coefficient,proposes a multiuser cooperation detection algorithm,and obtains optimized weight vector expression.Theoretical analysis and simulation results demonstrate the remarkable improvement of proposed algorithm on detection performance compared with the classical cooperation detection algorithm.