Journal
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Volume 66, Issue 6, Pages 5505-5509Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2016.2627218
Keywords
Minimum Euclidean distance (MED) precoders; multiple-input multiple-output (MIMO); non-orthogonal multiple access (NOMA); user pairing
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Funding
- National Natural Science Foundation of China [61471334]
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In this paper, the design of minimum Euclidean distance (MED) precoders is developed for multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) downlink. First, we propose the MED precoding algorithm for the two-user 2x2 MIMO-NOMA downlink by combining the methodology of MED precoding previously developed for unicast MIMO and multicast MIMO scenarios. Then, to extend MED precoders to general multiuser scenarios, we propose two algorithms for user pairing, based on the condition number and orthogonality defect, respectively. Finally, computer simulations validate the effectiveness of the proposed MED precoders as well as the user pairing algorithms.
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