Uplink Grant-Free NOMA With Sinusoidal Spreading Sequences

  title={Uplink Grant-Free NOMA With Sinusoidal Spreading Sequences},
  author={Shah Mahdi Hasan and Kaushik Mahata and Mashud Hyder},
  journal={IEEE Transactions on Communications},
Grant-access based legacy networks are unable to deliver Uplink (UL) dominated sporadic transmission of short packets with low signalling overhead, which are the requirements of Massive Machine Type Communication (mMTC). Hence, grant-free Non-Orthogonal Multiple Access (NOMA) techniques are more suited for mMTC. Due to the inherent sparsity in the user activity pattern in an mMTC system, the existing literature revolves around Compressive Sensing based Multi User Detection (CS-MUD) algorithms… 

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