The extended hybrid carrier-based multiple access technology for high mobility scenarios

Ge Song, Xiaojie Fang, X. Sha
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Abstract

The hybrid carrier (HC) system rooted in the carrier fusion concept is gradually garnering attention. In this paper, we study the extended hybrid carrier (EHC) multiple access scheme to ensure reliable wireless communication. By employing the EHC modulation, a power layered multiplexing framework is realized, which exhibits enhanced interference suppression capability owing to the more uniform energy distribution design. The implementation method and advantage mechanism are explicated respectively for the uplink and downlink, and the performance analysis under varying channel conditions is provided. In addition, considering the connectivity demand, we explore the non-orthogonal multiple access (NOMA) method of the EHC system and develop the EHC sparse code multiple access scheme. The proposed scheme melds the energy spread superiority of EHC with the access capacity of NOMA, facilitating superior support for massive connectivity in high mobility environments. Simulation results have verified the feasibility and advantages of the proposed scheme. Compared with existing HC multiple access schemes, the proposed scheme exhibits robust bit error rate performance and can better guarantee multiple access performance in complex scenarios of next-generation communications.
适用于高移动性场景的扩展混合载波多址技术
植根于载波融合概念的混合载波(HC)系统正逐渐引起人们的关注。本文研究了扩展混合载波(EHC)多路访问方案,以确保可靠的无线通信。通过采用 EHC 调制,实现了功率分层复用框架,由于能量分布设计更均匀,因此干扰抑制能力更强。本文分别阐述了上行链路和下行链路的实现方法和优势机制,并对不同信道条件下的性能进行了分析。此外,考虑到连接性需求,我们探索了 EHC 系统的非正交多址接入(NOMA)方法,并开发了 EHC 稀疏码多址接入方案。所提出的方案融合了 EHC 的能量传播优势和 NOMA 的接入能力,为高移动性环境下的大规模连接提供了卓越支持。仿真结果验证了所提方案的可行性和优势。与现有的 HC 多路访问方案相比,所提出的方案具有稳健的误码率性能,能在下一代通信的复杂场景中更好地保证多路访问性能。
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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