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A General MIMO Framework for NOMA Downlink and Uplink Transmission Based on Signal Alignment

Author(s): Ding, Zhiguo; Schober, Robert; Poor, H Vincent

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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.
Publication Date: Jun-2016
Citation: Ding, Zhiguo, Robert Schober, and H. Vincent Poor. "A general MIMO framework for NOMA downlink and uplink transmission based on signal alignment." IEEE Transactions on Wireless Communications 15, no. 6 (2016): 4438-4454. doi:10.1109/TWC.2016.2542066
DOI: 10.1109/TWC.2016.2542066
ISSN: 1536-1276
EISSN: 1558-2248
Pages: 4438 - 4454
Type of Material: Journal Article
Journal/Proceeding Title: IEEE Transactions on Wireless Communications
Version: Author's manuscript

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