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A general MIMO framework for NOMA downlink and uplink transmission based on signal alignment

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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<mark>Journal publication date</mark>06/2016
<mark>Journal</mark>IEEE Transactions on Wireless Communications
Issue number6
Volume15
Number of pages17
Pages (from-to)4438-4454
Publication StatusPublished
Early online date14/03/16
<mark>Original language</mark>English

Abstract

The application of multiple-input multiple-output (MIMO) techniques to nonorthogonal multiple access (NOMA) systems is important to enhance the performance gains of NOMA. In this paper, a novel MIMO-NOMA framework for downlink and uplink transmission is proposed by applying the concept of signal alignment. By using stochastic geometry, closed-form analytical results are developed to facilitate the performance evaluation of the proposed framework for randomly deployed users and interferers. The impact of different power allocation strategies, namely fixed power allocation and cognitive radio inspired power allocation, on the performance of MIMO-NOMA is also investigated. Computer simulation results are provided to demonstrate the performance of the proposed framework and the accuracy of the developed analytical results.

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©2016 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.