.png){kind=icon}
返回
Constellation Design With Hypercube Graphs
.png){kind=icon}
PRE
AI
DOI：10.1109/LSP.2023.3308813.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
A high peak-to-average power ratio (PAPR) is a major disadvantage of orthogonal frequency division multiplexing (OFDM) communications systems. In this letter, we present a graph-theoretic heuristic to mitigate high PAPR. In particular, we focus on searching for an optimal Gray-coded mapping to encode user messages such that minimum PAPR is obtained for a given message sequence in an $M$-ary quadrature amplitude modulation (QAM). We exploit the bijection between vertex-weighted lattice constellations and hypercube graphs to formulate the OFDM PAPR optimization as a computationally efficient integer linear program (ILP) through the application of Birkhoff's theorem to doubly stochastic matrices. Our numerical experiments show an average PAPR reduction of 9-10 dB using the hypercube-graph-based constellation map over the worst map while still within 0.5 dB of the brute-force method.
Keyword:
Birkhoff's theorem
Gray codes
hypercube graphs
integer linear programming
OFDM PAPR
期刊
IF:
9.6
论文数:
1.1W
被引数:
1.7W
机构
引用论文
The role of two-component catalysts containing chelating bisaryloxide ligands in controlling the stereochemistry of the metathesis polymerization of norbornene.png)
Polyhedron
PolyhedronIF0
PREAI
分享收藏分享收藏Programmed Adsorption and Release of Proteins in a Microfluidic Device微流控装置中蛋白质的程序化吸附和释放Science
ScienceIF0
PREAI
分享收藏Hybrid Peak-to-Average Power Ratio Reduction Techniques: Review and Performance ComparisonIEEE ACCESS
OAAI
IEEE ACCESSIF3.6
OAAI分享收藏
查看更多内容