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<p>In this paper, geometric shaping (GS) optimization for faster-than-Nyquist (FTN) signaling with linear pre-equalization (LPE) is proposed. Compared to the Nyquist QAM regular system, the proposed FTN GS LPE system can obtain 0.20 dB performance gain with FTN time packing factor at 0.80, while the transmitted symbol rate can improve 25 <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11760_2025_4755_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="15" /> </InlineMediaObject> <EquationSource Format="TEX">\(\%\)</EquationSource> <EquationSource Format="MATHML"><math> <mo>%</mo> </math></EquationSource> </InlineEquation>. The theoretical analysis and simulated bit error rate performance both show that the proposed GS optimization for FTN signaling with LPE is efficient, which can be regarded as a potential scheme for the spectral-efficient communications.</p>

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Geometric shaping optimization for faster-than-Nyquist signaling with linear pre-equalization

  • 期刊论文

  • 发表日期：

    2025年9月19日

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  • Weimin Kang

摘要

In this paper, geometric shaping (GS) optimization for faster-than-Nyquist (FTN) signaling with linear pre-equalization (LPE) is proposed. Compared to the Nyquist QAM regular system, the proposed FTN GS LPE system can obtain 0.20 dB performance gain with FTN time packing factor at 0.80, while the transmitted symbol rate can improve 25 \(\%\) % . The theoretical analysis and simulated bit error rate performance both show that the proposed GS optimization for FTN signaling with LPE is efficient, which can be regarded as a potential scheme for the spectral-efficient communications.