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MIMO-NOMA Design for Small Packet Transmission in the Internet of Things

Author(s): Ding, Zhiguo; Dai, Linglong; Poor, H. Vincent

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Abstract: A feature of the Internet of Things (IoT) is that some users in the system need to be served quickly for small packet transmission. To address this requirement, a new multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) scheme is designed in this paper, where one user is served with its quality of service requirement strictly met, and the other user is served opportunistically by using the NOMA concept. The novelty of this new scheme is that it confronts the challenge that the existing MIMO-NOMA schemes rely on the assumption that users' channel conditions are different, a strong assumption which may not be valid in practice. The developed precoding and detection strategies can effectively create a significant difference between the users' effective channel gains, and therefore, the potential of NOMA can be realized even if the users' original channel conditions are similar. Analytical and numerical results are provided to demonstrate the performance of the proposed MIMO-NOMA scheme.
Publication Date: 5-Apr-2016
Citation: Ding, Zhiguo, Dai, Linglong, Poor, H Vincent. (2016). MIMO-NOMA Design for Small Packet Transmission in the Internet of Things. IEEE Access, 4 (1393 - 1405. doi:10.1109/access.2016.2551040
DOI: doi:10.1109/access.2016.2551040
EISSN: 2169-3536
Pages: 1393 - 1405
Type of Material: Journal Article
Journal/Proceeding Title: IEEE Access
Version: Author's manuscript

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