PAM与QAM星座在分频多址中的应用

IF 5.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2025-01-13 DOI:10.1109/LWC.2025.3528826

Álvaro Pendás-Recondo;Jesús Alberto López-Fernández;Rafael González Ayestarán

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引用次数: 0

摘要

比较了PAM和QAM星座在分速率多址（RSMA）中的应用。先前对离散或有限输入信号的RSMA的研究考虑了QAM或PSK。我们建议对每个流使用PAM星座，对公共流应用90度的相位旋转，以实现与私有流的正交性。基于数据速率和符号误码率（SER）分析的数值结果表明，在双用户场景下，当信道之间存在显著差异时，PAM优于QAM。这一发现表明，PAM星座可以比其他多址（MA）策略扩展RSMA的操作区域。

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On the Use of PAM versus QAM Constellations in Rate-Splitting Multiple Access

A comparison between the use of PAM and QAM constellations in Rate-Splitting Multiple Access (RSMA) is presented. Previous studies of RSMA with discrete or finite input signaling have considered either QAM or PSK. We propose the use of PAM constellations for every stream, with a phase rotation of 90 degrees applied to the common stream to achieve orthogonality with private streams. Numerical results based on data rate and Symbol Error Rate (SER) analysis indicate that PAM is superior to QAM when there is a significant disparity between channels for a two-user scenario. This finding indicates that PAM constellations can extend the operational region of RSMA over other Multiple Access (MA) strategies.

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来源期刊

IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.