Trellis-Coded Non-Orthogonal Multiple Access
In this letter, we propose a trellis-coded non-orthogonal multiple access (NOMA) scheme. The signals for different users are produced by trellis coded modulation (TCM) and then superimposed on different power levels. By interpreting the encoding process via the tensor product of trellises, we introd...
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| Veröffentlicht in: | IEEE wireless communications letters 2020-04, Vol.9 (4), p.538-542 |
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| creator | Zou, Xun Ganji, Mehdi Jafarkhani, Hamid |
| description | In this letter, we propose a trellis-coded non-orthogonal multiple access (NOMA) scheme. The signals for different users are produced by trellis coded modulation (TCM) and then superimposed on different power levels. By interpreting the encoding process via the tensor product of trellises, we introduce a joint detection method based on the Viterbi algorithm. Then, we determine the optimal power allocation between the two users by maximizing the free distance of the tensor product trellis. Finally, we manifest that the trellis-coded NOMA outperforms the uncoded NOMA at high signal-to-noise ratio (SNR). |
| doi_str_mv | 10.1109/LWC.2019.2961899 |
| format | Article |
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| source | IEEE Electronic Library (IEL) |
| subjects | Algorithms Codes Convolutional codes Encoding Euclidean distance Mathematical analysis NOMA Non-orthogonal multiple access Nonorthogonal multiple access Optimization Resource management Signal to noise ratio superposition coding Tensors trellis coded modulation Viterbi algorithm Viterbi algorithm detectors |
| title | Trellis-Coded Non-Orthogonal Multiple Access |
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