A CA and ML approach for M-MIMO optical non-orthogonal multiple access power efficiency

Q3 Engineering
Arun Kumar, Nidhi Gour, Himanshu Sharma
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引用次数: 2

Abstract

Abstract The non-orthogonal multiple access (NOMA) multiple access approach can be used in future wireless communication systems to support massive connections and increase spectrum efficiency. Because user signal intensities and interference levels vary, precise channel assessment is essential in NOMA. Optimal power allocation and decoding order are made possible by precise algorithms, increasing system effectiveness and performance. However, NOMA can be adversely impacted by high peak-to-average power ratio (PAPR) values, leading to worsened system performance and more complex power amplifiers. In order to solve this issue, this paper recommends PAPR reduction in NOMA using companding methods for 512, 256, and 64 sub-carriers. Nonlinear companding techniques, such as MA and A-law companding, can efficiently reduce the high peak power of NOMA signals while reducing distortion and enhancing overall system dependability. The effectiveness of the proposed companding methods is evaluated using simulations, and the results demonstrate a significant decrease in PAPR, ensuring higher bit error rate (BER) effectiveness and transmission resilience in NOMA-based communication systems. The proposed approach is compared to the traditional Ml (C- Ml) and A-Law (C- A-Law).
M-MIMO光非正交多址效率的CA和ML方法
非正交多址(NOMA)多址方式可用于未来的无线通信系统,以支持海量连接并提高频谱效率。由于用户信号强度和干扰水平的变化,在NOMA中精确的信道评估是必不可少的。通过精确的算法实现最佳的功率分配和解码顺序,提高了系统的效率和性能。然而,高峰值平均功率比(PAPR)值会对NOMA产生不利影响,导致系统性能下降和功率放大器更复杂。为了解决这一问题,本文建议在NOMA中使用压缩方法对512、256和64个子载波降低PAPR。非线性压缩技术,如MA和a律压缩,可以有效地降低NOMA信号的峰值功率,同时减少失真,提高系统的整体可靠性。通过仿真对所提出的压缩方法的有效性进行了评估,结果表明,在基于noma的通信系统中,PAPR显著降低,确保了更高的误码率(BER)有效性和传输弹性。将该方法与传统的Ml (C- Ml)和A-Law (C- A-Law)进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Optical Communications
Journal of Optical Communications Engineering-Electrical and Electronic Engineering
CiteScore
2.90
自引率
0.00%
发文量
86
期刊介绍: This is the journal for all scientists working in optical communications. Journal of Optical Communications was the first international publication covering all fields of optical communications with guided waves. It is the aim of the journal to serve all scientists engaged in optical communications as a comprehensive journal tailored to their needs and as a forum for their publications. The journal focuses on the main fields in optical communications
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