• Corpus ID: 245634877

Statistical Device Activity Detection for OFDM-based Massive Grant-Free Access

@article{Jia2021StatisticalDA,
  title={Statistical Device Activity Detection for OFDM-based Massive Grant-Free Access},
  author={Yuhang Jia and Ying Cui and Wuyang Jiang},
  journal={ArXiv},
  year={2021},
  volume={abs/2112.15354}
}
Existing works on grant-free access, proposed to support massive machine-type communication (mMTC) for the Internet of things (IoT), mainly concentrate on narrow band systems under flat fading. However, little is known about massive grant-free access for wideband systems under frequency-selective fading. This paper investigates massive grant-free access in a wideband system under frequency-selective fading. First, we present an orthogonal frequency division multiplexing (OFDM)-based massive… 

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References

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TLDR
An orthogo-nal frequency division multiplexing (OFDM)-based grant-free massive access scheme for a wideband system with one M- antenna base station, single-antenna Internet of Things (IoT) devices, and channel taps and an iterative algorithm to obtain a stationary point using optimal techniques is presented.
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