论文部分内容阅读
在MIMO系统中,以软输入软输出方式为基础的迭代检测方式,性能要明显优于基于硬判决的迭代方案。因此基于软信息传递的迭代检测理论具有广泛的应用。但是,其复杂度较高,特别是应用于MIMO系统时,复杂度的限制尤为明显。球形译码是一种近似最大似然检测的低复杂度方案,在这里,引入一种低复杂度的软入软出(SISO)球形译码迭代方案,并给出球形译码中搜索树的删减简化方案。
In the MIMO system, the iterative detection method based on the soft input soft output method is obviously superior to the iterative scheme based on hard decision. Therefore, Iterative detection theory based on soft information transmission has a wide range of applications. However, the complexity is high, especially when applied to a MIMO system, the complexity limit is particularly obvious. Sphere decoding is a kind of low complexity scheme of approximate maximum likelihood detection. Here, a low complexity soft-in-soft-out (SISO) spherical decoding iterative scheme is introduced and the search tree of spherical decoding Reduce the simplified program.