2S (Superposition Coding, Successive Interference Cancellation) Operations in NOMA Technology for 5G Networks: Review and Implementation

Kartik Patel, Sanjay Dasrao Deshmukh
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Abstract

With ever increasing demand and progress of telecommunication networks (4G, 5G and beyond) in industrial automation, smart cities, internet of things and vehicular communication, some of the key goals or challenges that need to be talked are capacity enhancement, better data rate, increased spectral efficiency, reduced latency and better Quality of Service (QoS) and Quality of Experience (QoE) to mobile users. The limitations of the 3G and 4G networks lies in the capacity because of the Orthogonal Multiple Access (OMA) they use in time, frequency, and code domain. To overcome this limitation 5G NR (New Radio) is developed by 3GPP. The multiple access technique used in 5G network is Non-Orthogonal Multiple Access (NOMA). This paper presents results of review and basic implementation of NOMA operations like superposition coding, Successive Interference Cancellation (SIC) and effect of it on bit error rate (BER) curve for two users and three users with different power weights. Authors have found that with large difference in the power weights assigned to user there is significant difference in the BER of users after decoding, also by changing the power weights assigned to users BER can be reduced at lower values of SNR.
5G网络NOMA技术中的2S(叠加编码,连续干扰消除)操作:回顾与实现
随着工业自动化、智慧城市、物联网和车载通信领域对电信网络(4G、5G及以上)的需求和进步不断增长,需要讨论的一些关键目标或挑战是容量增强、更好的数据速率、更高的频谱效率、更低的延迟以及更好的服务质量(QoS)和体验质量(QoE)。3G和4G网络在时间域、频率域和码域采用正交多址(OMA),其局限性在于容量。为了克服这一限制,3GPP开发了5G NR(新无线电)。5G网络中使用的多址技术是非正交多址(NOMA)。本文介绍了叠加编码、连续干扰抵消(SIC)等NOMA操作的综述结果和基本实现,以及对两用户和三用户不同功率权重下误码率(BER)曲线的影响。作者发现,当分配给用户的权值差异较大时,解码后用户的误码率也会有显著差异,并且在信噪比较低时,通过改变分配给用户的权值可以降低误码率。
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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