• Corpus ID: 245650343

Device Activity Detection for Massive Grant-Free Access Under Frequency-Selective Rayleigh Fading

  title={Device Activity Detection for Massive Grant-Free Access Under Frequency-Selective Rayleigh Fading},
  author={Yuhang Jia and Ying Cui and Wuyang Jiang},
Device activity detection and channel estimation for massive grant-free access under frequency-selective fading have unfortunately been an outstanding problem. This paper aims to address the challenge. Specifically, we present an orthogonal frequency division multiplexing (OFDM)-based massive grantfree access scheme for a wideband system with one M -antenna base station (BS), N single-antenna Internet of Things (IoT) devices, and P channel taps. We obtain two different but equivalent models for… 

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