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基于迭代联合信道估计的联合检测算法

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摘要 在单天线干扰消除中,联合最大似然检测算法需要事先获得各同频信号的信道矢量。移动通信中,信道时变特性以及同频小区的异步特性成为了干扰条件下信道估计的巨大障碍。针对蜂窝移动通信中联合检测受限于信道估计精度的问题,提出了一种利用检测序列反馈辅助信道估计的迭代算法,实现了联合信道估计,通过多次迭代逐步改善信道估计精度和检测性能;同时,给出一种自适应选取迭代次数的算法,以降低算法的复杂度。仿真表明,迭代算法有效地解决了异步系统时变信道下的信道估计和联合检测问题,其误码率可以逼近数据已知情况下的检测性能。
出处 《电信技术研究》 2015年第2期9-16,共8页 Research on telecommunication technology
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