无线通信中最大似然序列估计的改进方法

无线通信中应用最大似然序列估计,其时延和计算复杂度是必须解决的两个问题。为跟踪时变的移动无线信道,必须采用自适应信道估计器来提供信道信息。针对以上问题,综述了减少时延和计算复杂度的解决方法,并讨论了各种方法在复杂度和性能之间的权衡。最后指出了今后的研究方向。

Delay and computational complexity are two problems to be solved when Maximum Likelihood Sequence Estimation （MLSE） is used in wireless communication system. To trace time-variable mobile wireless channel, adaptive channel estimators are adopted to provide channel information for MLSE. Aimed to solve these problems, the solutions to reduce delay and computational complexity are reviewed and the trade-off between complexity and performance of these solutions is discussed. Finally, the direction of future research is indicated.