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A GCICA Grant-Free Random Access Scheme for M2M Communications in Crowded Massive MIMO Systems

Huimei Han,Lushun Fang,Weidang Lu,Wenchao Zhai,Ying Li,Jun Zhao

IEEE Internet of Things Journal（2022）

Cited 31|Views2
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Abstract
A novel grant-free random access scheme with a high success rate is proposed to support massive access for machine-to-machine communications in massive multiple-input–multiple-output (MIMO) systems. This scheme allows active user equipments (UEs) to transmit their modulated uplink messages and super pilots consisting of multiple subpilots to a base station (BS). Then, the BS performs channel state...
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Key words
Uplink,Massive MIMO,Machine-to-machine communications,Estimation,Silicon carbide,Decoding,Internet of Things
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