Algebraic tools to build modulation schemes for fading channels
Algebraic tools to build modulation schemes for fading channels
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DOI：
10.1109/18.568703
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发表时间：
1997-05
期刊：
影响因子：
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通讯作者：
X. Giraud;E. Boutillon;J. Belfiore
中科院分区：
文献类型：
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作者：
X. Giraud;E. Boutillon;J. Belfiore
为了建立与瑞利衰落信道和高斯信道相匹配的格子星座，提出了一个统一的框架。该方法包括对实分量或二维信号进行交织的情况。在后一种情况下，给出了一个关于欧几里德距离与最稠密二元格同余的格的简单构造。在某种意义上，它概括了Forney(1991)提出的结构构造。然后将这些星座与陪集码组合。分割规则和增益公式类似于用于高斯信道的那些。
A unified framework is presented in order to build lattice constellations matched to both the Rayleigh fading channel and the Gaussian channel. The method encompasses the situations where the interleaving is done on the real components or on two-dimensional signals. In the latter case, a simple construction of lattices congruent to the densest binary lattices with respect to the Euclidean distance is proposed. It generalizes, in a sense to be clarified later, the structural construction proposed by Forney (1991). These constellations are next combined with coset codes. The partitioning rules and the gain formula are similar to those used for the Gaussian channel.