MIMO-NOMA design for small packet transmission in the Internet of Things

Ding, Zhiguo and Dai, Linglong and Poor, H. Vincent (2016) MIMO-NOMA design for small packet transmission in the Internet of Things. IEEE Access, 4. pp. 1393-1405. ISSN 2169-3536

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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.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Access
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500
Subjects:
ID Code:
83736
Deposited By:
Deposited On:
20 Dec 2016 13:38
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Mar 2020 04:59