A lattice coding based non-orthogonal multiple access scheme

Bao, Jinchen and Ma, Zheng and Zhu, Zhongliang and Mahamadu, Mahamuda Alhaji and Ding, Zhiguo (2015) A lattice coding based non-orthogonal multiple access scheme. In: 2015 Seventh International Workshop on Signal Design and its Applications in Communications (IWSDA). IEEE, pp. 133-136. ISBN 9781467383080

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Non-orthogonal multiple access (NOMA) employing nested lattice codes is investigated in a downlink transmission scenario. The fundamental idea is the multiple access scheme via Compute-and-Forward framework, which produces an equivalent MIMO channel such that multiuser detection can be performed. Approaches including the successive lattice decoding of linear functions of transmitted messages by cancelling decoded equations and ML detection are investigated. Power allocation as a precoding scheme as well as an allocation strategy are proposed to deal with channel fadings and to enhance system throughput.

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19 Aug 2016 08:02
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21 Sep 2023 03:50