高斯信道和受脉冲噪声影响的信道的多级栅格编码

A. Calderbank
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引用次数: 2

摘要

作者设计了基于格和协集的多层网格编码,比以前的方法提供更大的抗高斯噪声和/或更大的抗脉冲噪声能力。他展示了如何计算最小平方距离和路径的多重性的规范和不同的余集的多重性。多层结构允许冗余的coset选择过程有效地分配到不同的层次。所提出的代码允许分阶段解码过程,需要很少的网格状态,并且比最大似然解码具有性能/复杂性优势。
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Multi-level trellis codes for the Gaussian channel and for channels subject to impulsive noise
The author designs multilevel trellis codes based on lattices and cosets that provide greater immunity to Gaussian noise and/or greater resistance to impulse noise than previous approaches. He shows how to calculate minimum-squared distance and path multiplicity in terms of the norms and multiplicities of the different cosets. The multilevel structure allows the redundancy in the coset selection procedure to be allocated efficiently among the different levels. The proposed codes admit a staged decoding procedure that requires very few trellis states and has performance/complexity advantages over maximum-likelihood decoding.<>
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