Clipping can improve the performance of spatially coupled sparse superposition codes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

9 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)2578-2581
Journal / PublicationIEEE Communications Letters
Volume21
Issue number12
Online published19 Sep 2017
Publication statusPublished - Dec 2017

Abstract

Gaussian signaling of spatially coupled sparse superposition codes incurs a high peak-to-average-power ratio (PAPR) problem. Clipping can be used to reduce PAPR. At the receiver side, generalized approximate message passing algorithm is employed to handle the non-linear clipping distortion. Surprisingly, we observe empirically that clipping can improve the performance in low-to-medium rate region. We provide an explanation of this observation based on potential function analysis

Research Area(s)

  • Clipping, Generalized approximate message passing, Potential function analysis, Sparse superposition codes, Spatial coupling