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Unsourced Random Massive Access with Beam-Space Tree Decoding
Jingze Che, Zhaoyang Zhang, Zhaohui Yang +3
The core requirement of massive Machine-Type Communication (mMTC) is to support reliable and fast access for an enormous number of machine-type devices (MTDs). In many practical ap…
Double Intelligent Reflecting Surface-assisted Multi-User MIMO mmWave Systems with Hybrid Precoding
Hehao Niu, Zheng Chu, Fuhui Zhou +3
This work investigates the effect of double intelligent reflecting surface (IRS) in improving the spectrum efficient of multi-user multiple-input multiple-output (MIMO) network ope…
Faster-than-Nyquist Asynchronous NOMA Outperforms Synchronous NOMA
Shuangyang Li, Zhiqiang Wei, Weijie Yuan +4
Faster-than-Nyquist (FTN) signaling aided non-orthogonal multiple access (NOMA) is conceived and its achievable rate is quantified in the presence of random link delays of the diff…
Improving Sum-Rate of Cell-Free Massive MIMO with Expanded Compute-and-Forward
Jiayi Zhang, Jing Zhang, Derrick Wing Kwan Ng +2
Cell-free massive multiple-input multiple-output (MIMO) employs a large number of distributed access points (APs) to serve a small number of user equipments (UEs) via the same time…
Beamforming Design for Intelligent Reflecting Surface-Enhanced Symbiotic Radio Systems
Shaokang Hu, Chang Liu, Zhiqiang Wei +3
This paper investigates multiuser multi-input single-output downlink symbiotic radio communication systems assisted by an intelligent reflecting surface (IRS). Different from exist…
Reconfigurable Intelligent Surface-Enhanced OFDM Communications via Delay Adjustable Metasurface
Jiancheng An, Chao Xu, Derrick Wing Kwan Ng +3
Reconfigurable intelligent surface (RIS) is a promising technology for establishing spectral- and energy-efficient wireless networks. In this paper, we study RIS-enhanced orthogona…