arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.4354cs.ITmath.IT
收藏

软输入软输出球形译码

Soft-Input Soft-Output Sphere Decoding

Christoph Studer, Helmut Bölcskei

摘要:

软输入软输出(SISO)检测算法形成迭代解码的基础。相关联的计算复杂性通常对实际的接收机实现提出重大挑战,特别是在多输入多输出无线系统的上下文中。在本文中,我们提出了一个低复杂度的SISO球解码器,它是基于单树搜索范式,最初提出的软输出检测在Studer等人,IEEE J-SAC,2008年。该算法采用裁剪的外在对数似然比的树搜索,这不仅导致显着的复杂性节省,但也允许通过调整一个单一的参数,以涵盖一个大的性能/复杂性权衡区域。

英文摘要:

Soft-input soft-output (SISO) detection algorithms form the basis for iterative decoding. The associated computational complexity often poses significant challenges for practical receiver implementations, in particular in the context of multiple-input multiple-output wireless systems. In this paper, we present a low-complexity SISO sphere decoder which is based on the single tree search paradigm, proposed originally for soft-output detection in Studer et al., IEEE J-SAC, 2008. The algorithm incorporates clipping of the extrinsic log-likelihood ratios in the tree search, which not only results in significant complexity savings, but also allows to cover a large performance/complexity trade-off region by adjusting a single parameter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑