最坏情况译码复杂度为0 (m2)的黄金码降维

S. Kahraman, M. Çelebi
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引用次数: 12

摘要

本文介绍了一种基于球解码器搜索树降维的高效黄金码解码方法。黄金码的一个码字有四个独立的m-QAM数据符号,因此,穷举搜索解码器所需的复杂度为m4。已知具有最坏情况复杂度的黄金码的最大似然解码器的有效实现与m2.5成正比。我们的动机是开发一种最坏情况复杂度不超过m2.5的高效解码器。为此,我们证明了我们提出的方法在最坏情况下具有m2复杂度,相对于最佳解码仅损失1 dB。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dimensionality reduction for the golden code with worst-case decoding complexity of O(m2)
In this paper we introduce an efficient decoding method which is based on the dimensionality reduction of the sphere decoder search tree for the golden code. A codeword of the golden code has four independent m-QAM data symbols, hence, the required complexity of the exhaustive-search decoder is m4. An efficient implementation of the maximum-likelihood decoder for the golden code with a worst-case complexity is known to be proportional to m2.5. Our motivation is for an efficient decoder with a worst-case complexity of no more than m2.5. In this purpose, we show that our proposed method has m2 complexity in the worst-case with a loss of only 1 dB with respect to optimal decoding.
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