改进的基于序列列表的MIMO迭代检测算法
doi: 10.3724/SP.J.1146.2005.00952
An Improved Algorithm Based on List Sequential Detector for MIMO System
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摘要: 该文改进了列表检测算法的列表搜索方法，提出首序列优先的搜索方法，同时提出了一种降低复杂度的迭代检测算法，该算法改变了列表检测基于列表的软信息计算方式，利用半定松弛算法思想采用最大似然测试降低了计算复杂度。仿真结果表明首序列优先检测算法与基本列表算法相比，在复杂度增加很小的情况下取得了更好的性能，提出的迭代检测算法降低了平均计算复杂度，取得了和首序列优先算法相同的性能。
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关键词:
- MIMO;列表序列检测;迭代检测
Abstract: An improved iterative detection algorithm is proposed in this paper, which introduces a new method of computing soft information based on the idea of semidefinite relaxation rather than on a list. Also a head-first list search algorithm is put forward to improve the performance of list sequential detector. Simulations show that the head-first list sequential detector outperforms the basic list sequential detector at the cost of little increasing complexity and the proposed iterative detector achieves the same performance of head-first list sequential detector but decreases the complexity. -
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